fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs#949

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Merged
jesseturner21 merged 2 commits into from
Apr 24, 2026
Merged

fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs #949

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af3a737
fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs
jesseturner21 Apr 24, 2026
03d3b3f
fix: check both stdin and stdout isTTY in requireTTY guard
jesseturner21 Apr 24, 2026
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2 changes: 2 additions & 0 deletions src/cli/cli.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -26,6 +26,7 @@ import { LayoutProvider } from './tui/context';
import { COMMAND_DESCRIPTIONS } from './tui/copy';
import { clearExitAction, getExitAction } from './tui/exit-action';
import { clearExitMessage, getExitMessage } from './tui/exit-message';
import { requireTTY } from './tui/guards';
import { CommandListScreen } from './tui/screens/home';
import { getCommandsForUI } from './tui/utils';
import { type UpdateCheckResult, checkForUpdate, printUpdateNotification } from './update-notifier';
Expand DownExpand Up@@ -212,6 +213,7 @@ export const main = async (argv: string[]) => {

// Show TUI for no arguments, commander handles --help via configureHelp()
if (args.length === 0) {
requireTTY();
renderTUI(updateCheck, isFirstRun);
return;
}
Expand Down
3 changes: 2 additions & 1 deletion src/cli/commands/add/command.tsx
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@@ -1,5 +1,5 @@
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { AddFlow } from '../../tui/screens/add/AddFlow';
import type { Command } from '@commander-js/extra-typings';
import { render } from 'ink';
Expand All@@ -21,6 +21,7 @@ export function registerAdd(program: Command): Command {
}

requireProject();
requireTTY();

const { clear, unmount } = render(
<AddFlow
Expand Down
2 changes: 2 additions & 0 deletions src/cli/commands/create/command.tsx
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Expand Up@@ -10,6 +10,7 @@ import type {
import { LIFECYCLE_TIMEOUT_MAX, LIFECYCLE_TIMEOUT_MIN } from '../../../schema';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireTTY } from '../../tui/guards';
import { CreateScreen } from '../../tui/screens/create';
import { parseCommaSeparatedList } from '../shared/vpc-utils';
import { type ProgressCallback, createProject, createProjectWithAgent, getDryRunInfo } from './action';
Expand DownExpand Up@@ -245,6 +246,7 @@ export const registerCreate = (program: Command) => {
options.language = options.language ?? 'Python';
await handleCreateCLI(options as CreateOptions);
} else {
requireTTY();
handleCreateTUI();
}
} catch (error) {
Expand Down
4 changes: 3 additions & 1 deletion src/cli/commands/deploy/command.tsx
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@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { DeployScreen } from '../../tui/screens/deploy/DeployScreen';
import { handleDeploy } from './actions';
import type { DeployOptions } from './types';
Expand DownExpand Up@@ -160,8 +160,10 @@ export const registerDeploy = (program: Command) => {
await handleDeployCLI(options as DeployOptions);
} else if (cliOptions.diff) {
// Diff-only: use TUI with diff mode
requireTTY();
handleDeployTUI({ diffMode: true });
} else {
requireTTY();
handleDeployTUI();
}
} catch (error) {
Expand Down
3 changes: 2 additions & 1 deletion src/cli/commands/dev/command.tsx
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Expand Up@@ -21,7 +21,7 @@ import { OtelCollector, startOtelCollector } from '../../operations/dev/otel';
import { FatalError } from '../../tui/components';
import { LayoutProvider } from '../../tui/context';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { parseHeaderFlags } from '../shared/header-utils';
import { runBrowserMode } from './browser-mode';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -383,6 +383,7 @@ export const registerDev = (program: Command) => {

// If --no-browser provided, launch terminal TUI mode
if (!opts.browser) {
requireTTY();
// Enter alternate screen buffer for fullscreen mode
process.stdout.write(ENTER_ALT_SCREEN);

Expand Down
3 changes: 2 additions & 1 deletion src/cli/commands/invoke/command.tsx
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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { InvokeScreen } from '../../tui/screens/invoke';
import { parseHeaderFlags } from '../shared/header-utils';
import { handleInvoke, loadInvokeConfig } from './action';
Expand DownExpand Up@@ -168,6 +168,7 @@ export const registerInvoke = (program: Command) => {
});
} else {
// No CLI options - interactive TUI mode (headers still passed if provided)
requireTTY();
const { waitUntilExit, unmount } = render(
<InvokeScreen
isInteractive={true}
Expand Down
4 changes: 3 additions & 1 deletion src/cli/commands/remove/command.tsx
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@@ -1,7 +1,7 @@
import { ConfigIO } from '../../../lib';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { RemoveAllScreen, RemoveFlow } from '../../tui/screens/remove';
import type { RemoveAllOptions, RemoveResult } from './types';
import { validateRemoveAllOptions } from './validate';
Expand DownExpand Up@@ -76,6 +76,7 @@ export const registerRemove = (program: Command): Command => {
json: cliOptions.json,
});
} else {
requireTTY();
const { unmount } = render(
<RemoveAllScreen
isInteractive={false}
Expand DownExpand Up@@ -112,6 +113,7 @@ export const registerRemove = (program: Command): Command => {
}

requireProject();
requireTTY();

const { clear, unmount } = render(
<RemoveFlow
Expand Down
2 changes: 2 additions & 0 deletions src/cli/primitives/AgentPrimitive.tsx
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Expand Up@@ -35,6 +35,7 @@ import { executeImportAgent } from '../operations/agent/import';
import { setupPythonProject } from '../operations/python';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { createRenderer } from '../templates';
import { requireTTY } from '../tui/guards/tty';
import type { GenerateConfig, MemoryOption } from '../tui/screens/generate/types';
import { BasePrimitive } from './BasePrimitive';
import { CredentialPrimitive } from './CredentialPrimitive';
Expand DownExpand Up@@ -332,6 +333,7 @@ export class AgentPrimitive extends BasePrimitive<AddAgentOptions, RemovableReso
process.exit(result.success ? 0 : 1);
} else {
// TUI fallback — dynamic imports to avoid pulling ink (async) into registry
requireTTY();
const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand Down
2 changes: 2 additions & 0 deletions src/cli/primitives/BasePrimitive.ts
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Expand Up@@ -2,6 +2,7 @@ import { ConfigIO, findConfigRoot } from '../../lib';
import type { AgentCoreProjectSpec } from '../../schema';
import type { ResourceType } from '../commands/remove/types';
import { getErrorMessage } from '../errors';
import { requireTTY } from '../tui/guards/tty';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource, RemovalPreview, RemovalResult } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -133,6 +134,7 @@ export abstract class BasePrimitive<
process.exit(result.success ? 0 : 1);
} else {
// TUI fallback — dynamic imports to avoid pulling ink (async) into registry
requireTTY();
const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand Down
2 changes: 2 additions & 0 deletions src/cli/primitives/CredentialPrimitive.tsx
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Expand Up@@ -4,6 +4,7 @@ import { CredentialSchema } from '../../schema';
import { validateAddCredentialOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { computeDefaultCredentialEnvVarName } from './credential-utils';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -339,6 +340,7 @@ export class CredentialPrimitive extends BasePrimitive<AddCredentialOptions, Rem
process.exit(result.success ? 0 : 1);
} else {
// TUI fallback — dynamic imports to avoid pulling ink (async) into registry
requireTTY();
const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand Down
2 changes: 2 additions & 0 deletions src/cli/primitives/EvaluatorPrimitive.ts
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Expand Up@@ -4,6 +4,7 @@ import { EvaluationLevelSchema, EvaluatorSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { renderCodeBasedEvaluatorTemplate } from '../templates/EvaluatorRenderer';
import { requireTTY } from '../tui/guards/tty';
import {
LEVEL_PLACEHOLDERS,
RATING_SCALE_PRESETS,
Expand DownExpand Up@@ -316,6 +317,7 @@ export class EvaluatorPrimitive extends BasePrimitive<AddEvaluatorOptions, Remov
process.exit(result.success ? 0 : 1);
} else {
// TUI fallback
requireTTY();
const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand Down
2 changes: 2 additions & 0 deletions src/cli/primitives/GatewayPrimitive.ts
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Expand Up@@ -12,6 +12,7 @@ import type { AddGatewayOptions as CLIAddGatewayOptions } from '../commands/add/
import { validateAddGatewayOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import type { AddGatewayConfig } from '../tui/screens/mcp/types';
import { BasePrimitive } from './BasePrimitive';
import { buildAuthorizerConfigFromJwtConfig, createManagedOAuthCredential } from './auth-utils';
Expand DownExpand Up@@ -271,6 +272,7 @@ export class GatewayPrimitive extends BasePrimitive<AddGatewayOptions, Removable
);
process.exit(result.success ? 0 : 1);
} else {
requireTTY();
const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand Down
2 changes: 2 additions & 0 deletions src/cli/primitives/GatewayTargetPrimitive.ts
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Expand Up@@ -15,6 +15,7 @@ import { getErrorMessage } from '../errors';
import type { RemovableGatewayTarget } from '../operations/remove/remove-gateway-target';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { getTemplateToolDefinitions, renderGatewayTargetTemplate } from '../templates/GatewayTargetRenderer';
import { requireTTY } from '../tui/guards/tty';
import type {
ApiGatewayTargetConfig,
GatewayTargetWizardState,
Expand DownExpand Up@@ -508,6 +509,7 @@ export class GatewayTargetPrimitive extends BasePrimitive<AddGatewayTargetOption
);
process.exit(result.success ? 0 : 1);
} else {
requireTTY();
const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand Down
2 changes: 2 additions & 0 deletions src/cli/primitives/MemoryPrimitive.tsx
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Expand Up@@ -17,6 +17,7 @@ import {
import { DEFAULT_DELIVERY_TYPE, validateAddMemoryOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { DEFAULT_EVENT_EXPIRY } from '../tui/screens/memory/types';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -230,6 +231,7 @@ export class MemoryPrimitive extends BasePrimitive<AddMemoryOptions, RemovableMe
process.exit(result.success ? 0 : 1);
} else {
// TUI fallback — dynamic imports to avoid pulling ink (async) into registry
requireTTY();
const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand Down
2 changes: 2 additions & 0 deletions src/cli/primitives/OnlineEvalConfigPrimitive.ts
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Expand Up@@ -3,6 +3,7 @@ import type { OnlineEvalConfig } from '../../schema';
import { OnlineEvalConfigSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -171,6 +172,7 @@ export class OnlineEvalConfigPrimitive extends BasePrimitive<AddOnlineEvalConfig
process.exit(result.success ? 0 : 1);
} else {
// TUI fallback
requireTTY();
const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand Down
3 changes: 3 additions & 0 deletions src/cli/primitives/PolicyEnginePrimitive.ts
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Expand Up@@ -3,6 +3,7 @@ import type { AgentCoreProjectSpec, PolicyEngine } from '../../schema';
import { PolicyEngineModeSchema, PolicyEngineSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -261,6 +262,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
}
process.exit(result.success ? 0 : 1);
} else {
requireTTY();
const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand DownExpand Up@@ -326,6 +328,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
}
process.exit(result.success ? 0 : 1);
} else {
requireTTY();
const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand Down
3 changes: 3 additions & 0 deletions src/cli/primitives/PolicyPrimitive.ts
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Expand Up@@ -5,6 +5,7 @@ import { detectRegion } from '../aws';
import { getPolicyGeneration, startPolicyGeneration } from '../aws/policy-generation';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -343,6 +344,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
}
process.exit(result.success ? 0 : 1);
} else {
requireTTY();
const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand DownExpand Up@@ -417,6 +419,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
}
process.exit(result.success ? 0 : 1);
} else {
requireTTY();
const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
import('ink'),
import('react'),
Expand Down
1 change: 1 addition & 0 deletions src/cli/tui/guards/index.ts
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Expand Up@@ -5,3 +5,4 @@ export {
MissingProjectMessage,
WrongDirectoryMessage,
} from './project';
export { requireTTY } from './tty';
13 changes: 13 additions & 0 deletions src/cli/tui/guards/tty.ts
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@@ -0,0 +1,13 @@
/**
* Guard that checks for an interactive terminal and exits if not found.
* Prevents TUI flows from hanging in CI, piped stdin, or agent automation.
*
* Checks both stdin (Ink reads keyboard input) and stdout (Ink renders TUI output).
* Either being non-TTY means the TUI cannot function.
*/
export function requireTTY(): void {
if (!process.stdin.isTTY || !process.stdout.isTTY) {
console.error('Error: This command requires an interactive terminal. Use --help to see non-interactive flags.');
process.exit(1);
}
}
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs#949

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 Merged

jesseturner21
merged 2 commits into

from

Apr 24, 2026
 Merged


fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs
#949
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af3a737

fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs


jesseturner21 Apr 24, 2026
03d3b3f

fix: check both stdin and stdout isTTY in requireTTY guard


jesseturner21 Apr 24, 2026

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2 changes: 2 additions & 0 deletions
src/cli/cli.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -26,6 +26,7 @@ import { LayoutProvider } from './tui/context';
import { COMMAND_DESCRIPTIONS } from './tui/copy';
import { clearExitAction, getExitAction } from './tui/exit-action';
import { clearExitMessage, getExitMessage } from './tui/exit-message';
import { requireTTY } from './tui/guards';
import { CommandListScreen } from './tui/screens/home';
import { getCommandsForUI } from './tui/utils';
import { type UpdateCheckResult, checkForUpdate, printUpdateNotification } from './update-notifier';
Expand DownExpand Up@@ -212,6 +213,7 @@ export const main = async (argv: string[]) => {

 // Show TUI for no arguments, commander handles --help via configureHelp()
 if (args.length === 0) {
 requireTTY();
 renderTUI(updateCheck, isFirstRun);
 return;
 }
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/add/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { AddFlow } from '../../tui/screens/add/AddFlow';
import type { Command } from '@commander-js/extra-typings';
import { render } from 'ink';
Expand All@@ -21,6 +21,7 @@ export function registerAdd(program: Command): Command {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <AddFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/commands/create/command.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -10,6 +10,7 @@ import type {
import { LIFECYCLE_TIMEOUT_MAX, LIFECYCLE_TIMEOUT_MIN } from '../../../schema';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireTTY } from '../../tui/guards';
import { CreateScreen } from '../../tui/screens/create';
import { parseCommaSeparatedList } from '../shared/vpc-utils';
import { type ProgressCallback, createProject, createProjectWithAgent, getDryRunInfo } from './action';
Expand DownExpand Up@@ -245,6 +246,7 @@ export const registerCreate = (program: Command) => {
 options.language = options.language ?? 'Python';
 await handleCreateCLI(options as CreateOptions);
 } else {
 requireTTY();
 handleCreateTUI();
 }
 } catch (error) {
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/deploy/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { DeployScreen } from '../../tui/screens/deploy/DeployScreen';
import { handleDeploy } from './actions';
import type { DeployOptions } from './types';
Expand DownExpand Up@@ -160,8 +160,10 @@ export const registerDeploy = (program: Command) => {
 await handleDeployCLI(options as DeployOptions);
 } else if (cliOptions.diff) {
 // Diff-only: use TUI with diff mode
 requireTTY();
 handleDeployTUI({ diffMode: true });
 } else {
 requireTTY();
 handleDeployTUI();
 }
 } catch (error) {
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/dev/command.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,7 +21,7 @@ import { OtelCollector, startOtelCollector } from '../../operations/dev/otel';
import { FatalError } from '../../tui/components';
import { LayoutProvider } from '../../tui/context';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { parseHeaderFlags } from '../shared/header-utils';
import { runBrowserMode } from './browser-mode';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -383,6 +383,7 @@ export const registerDev = (program: Command) => {

 // If --no-browser provided, launch terminal TUI mode
 if (!opts.browser) {
 requireTTY();
 // Enter alternate screen buffer for fullscreen mode
 process.stdout.write(ENTER_ALT_SCREEN);

Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/invoke/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { InvokeScreen } from '../../tui/screens/invoke';
import { parseHeaderFlags } from '../shared/header-utils';
import { handleInvoke, loadInvokeConfig } from './action';
Expand DownExpand Up@@ -168,6 +168,7 @@ export const registerInvoke = (program: Command) => {
 });
 } else {
 // No CLI options - interactive TUI mode (headers still passed if provided)
 requireTTY();
 const { waitUntilExit, unmount } = render(
 <InvokeScreen
 isInteractive={true}
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/remove/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
import { ConfigIO } from '../../../lib';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { RemoveAllScreen, RemoveFlow } from '../../tui/screens/remove';
import type { RemoveAllOptions, RemoveResult } from './types';
import { validateRemoveAllOptions } from './validate';
Expand DownExpand Up@@ -76,6 +76,7 @@ export const registerRemove = (program: Command): Command => {
 json: cliOptions.json,
 });
 } else {
 requireTTY();
 const { unmount } = render(
 <RemoveAllScreen
 isInteractive={false}
Expand DownExpand Up@@ -112,6 +113,7 @@ export const registerRemove = (program: Command): Command => {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <RemoveFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/AgentPrimitive.tsx

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Expand Up@@ -35,6 +35,7 @@ import { executeImportAgent } from '../operations/agent/import';
import { setupPythonProject } from '../operations/python';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { createRenderer } from '../templates';
import { requireTTY } from '../tui/guards/tty';
import type { GenerateConfig, MemoryOption } from '../tui/screens/generate/types';
import { BasePrimitive } from './BasePrimitive';
import { CredentialPrimitive } from './CredentialPrimitive';
Expand DownExpand Up@@ -332,6 +333,7 @@ export class AgentPrimitive extends BasePrimitive<AddAgentOptions, RemovableReso
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/BasePrimitive.ts

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Expand Up@@ -2,6 +2,7 @@ import { ConfigIO, findConfigRoot } from '../../lib';
import type { AgentCoreProjectSpec } from '../../schema';
import type { ResourceType } from '../commands/remove/types';
import { getErrorMessage } from '../errors';
import { requireTTY } from '../tui/guards/tty';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource, RemovalPreview, RemovalResult } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -133,6 +134,7 @@ export abstract class BasePrimitive<
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/CredentialPrimitive.tsx

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Expand Up@@ -4,6 +4,7 @@ import { CredentialSchema } from '../../schema';
import { validateAddCredentialOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { computeDefaultCredentialEnvVarName } from './credential-utils';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -339,6 +340,7 @@ export class CredentialPrimitive extends BasePrimitive<AddCredentialOptions, Rem
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/EvaluatorPrimitive.ts

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Expand Up@@ -4,6 +4,7 @@ import { EvaluationLevelSchema, EvaluatorSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { renderCodeBasedEvaluatorTemplate } from '../templates/EvaluatorRenderer';
import { requireTTY } from '../tui/guards/tty';
import {
 LEVEL_PLACEHOLDERS,
 RATING_SCALE_PRESETS,
Expand DownExpand Up@@ -316,6 +317,7 @@ export class EvaluatorPrimitive extends BasePrimitive<AddEvaluatorOptions, Remov
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayPrimitive.ts

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Expand Up@@ -12,6 +12,7 @@ import type { AddGatewayOptions as CLIAddGatewayOptions } from '../commands/add/
import { validateAddGatewayOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import type { AddGatewayConfig } from '../tui/screens/mcp/types';
import { BasePrimitive } from './BasePrimitive';
import { buildAuthorizerConfigFromJwtConfig, createManagedOAuthCredential } from './auth-utils';
Expand DownExpand Up@@ -271,6 +272,7 @@ export class GatewayPrimitive extends BasePrimitive<AddGatewayOptions, Removable
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayTargetPrimitive.ts

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Expand Up@@ -15,6 +15,7 @@ import { getErrorMessage } from '../errors';
import type { RemovableGatewayTarget } from '../operations/remove/remove-gateway-target';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { getTemplateToolDefinitions, renderGatewayTargetTemplate } from '../templates/GatewayTargetRenderer';
import { requireTTY } from '../tui/guards/tty';
import type {
 ApiGatewayTargetConfig,
 GatewayTargetWizardState,
Expand DownExpand Up@@ -508,6 +509,7 @@ export class GatewayTargetPrimitive extends BasePrimitive<AddGatewayTargetOption
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/MemoryPrimitive.tsx

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Expand Up@@ -17,6 +17,7 @@ import {
import { DEFAULT_DELIVERY_TYPE, validateAddMemoryOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { DEFAULT_EVENT_EXPIRY } from '../tui/screens/memory/types';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -230,6 +231,7 @@ export class MemoryPrimitive extends BasePrimitive<AddMemoryOptions, RemovableMe
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/OnlineEvalConfigPrimitive.ts

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Expand Up@@ -3,6 +3,7 @@ import type { OnlineEvalConfig } from '../../schema';
import { OnlineEvalConfigSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -171,6 +172,7 @@ export class OnlineEvalConfigPrimitive extends BasePrimitive<AddOnlineEvalConfig
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyEnginePrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { AgentCoreProjectSpec, PolicyEngine } from '../../schema';
import { PolicyEngineModeSchema, PolicyEngineSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -261,6 +262,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -326,6 +328,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyPrimitive.ts

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Expand Up@@ -5,6 +5,7 @@ import { detectRegion } from '../aws';
import { getPolicyGeneration, startPolicyGeneration } from '../aws/policy-generation';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -343,6 +344,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -417,6 +419,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

1 change: 1 addition & 0 deletions
src/cli/tui/guards/index.ts

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Expand Up@@ -5,3 +5,4 @@ export {
 MissingProjectMessage,
 WrongDirectoryMessage,
} from './project';
export { requireTTY } from './tty';

13 changes: 13 additions & 0 deletions
src/cli/tui/guards/tty.ts

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@@ -0,0 +1,13 @@
/**
 * Guard that checks for an interactive terminal and exits if not found.
 * Prevents TUI flows from hanging in CI, piped stdin, or agent automation.
 *
 * Checks both stdin (Ink reads keyboard input) and stdout (Ink renders TUI output).
 * Either being non-TTY means the TUI cannot function.
 */
export function requireTTY(): void {
 if (!process.stdin.isTTY || !process.stdout.isTTY) {
 console.error('Error: This command requires an interactive terminal. Use --help to see non-interactive flags.');
 process.exit(1);
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs#949

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 Merged

jesseturner21
merged 2 commits into

from

Apr 24, 2026
 Merged


fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs
#949
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af3a737

fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs


jesseturner21 Apr 24, 2026
03d3b3f

fix: check both stdin and stdout isTTY in requireTTY guard


jesseturner21 Apr 24, 2026

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2 changes: 2 additions & 0 deletions
src/cli/cli.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -26,6 +26,7 @@ import { LayoutProvider } from './tui/context';
import { COMMAND_DESCRIPTIONS } from './tui/copy';
import { clearExitAction, getExitAction } from './tui/exit-action';
import { clearExitMessage, getExitMessage } from './tui/exit-message';
import { requireTTY } from './tui/guards';
import { CommandListScreen } from './tui/screens/home';
import { getCommandsForUI } from './tui/utils';
import { type UpdateCheckResult, checkForUpdate, printUpdateNotification } from './update-notifier';
Expand DownExpand Up@@ -212,6 +213,7 @@ export const main = async (argv: string[]) => {

 // Show TUI for no arguments, commander handles --help via configureHelp()
 if (args.length === 0) {
 requireTTY();
 renderTUI(updateCheck, isFirstRun);
 return;
 }
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/add/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { AddFlow } from '../../tui/screens/add/AddFlow';
import type { Command } from '@commander-js/extra-typings';
import { render } from 'ink';
Expand All@@ -21,6 +21,7 @@ export function registerAdd(program: Command): Command {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <AddFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/commands/create/command.tsx

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Expand Up@@ -10,6 +10,7 @@ import type {
import { LIFECYCLE_TIMEOUT_MAX, LIFECYCLE_TIMEOUT_MIN } from '../../../schema';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireTTY } from '../../tui/guards';
import { CreateScreen } from '../../tui/screens/create';
import { parseCommaSeparatedList } from '../shared/vpc-utils';
import { type ProgressCallback, createProject, createProjectWithAgent, getDryRunInfo } from './action';
Expand DownExpand Up@@ -245,6 +246,7 @@ export const registerCreate = (program: Command) => {
 options.language = options.language ?? 'Python';
 await handleCreateCLI(options as CreateOptions);
 } else {
 requireTTY();
 handleCreateTUI();
 }
 } catch (error) {
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/deploy/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { DeployScreen } from '../../tui/screens/deploy/DeployScreen';
import { handleDeploy } from './actions';
import type { DeployOptions } from './types';
Expand DownExpand Up@@ -160,8 +160,10 @@ export const registerDeploy = (program: Command) => {
 await handleDeployCLI(options as DeployOptions);
 } else if (cliOptions.diff) {
 // Diff-only: use TUI with diff mode
 requireTTY();
 handleDeployTUI({ diffMode: true });
 } else {
 requireTTY();
 handleDeployTUI();
 }
 } catch (error) {
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/dev/command.tsx

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Expand Up@@ -21,7 +21,7 @@ import { OtelCollector, startOtelCollector } from '../../operations/dev/otel';
import { FatalError } from '../../tui/components';
import { LayoutProvider } from '../../tui/context';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { parseHeaderFlags } from '../shared/header-utils';
import { runBrowserMode } from './browser-mode';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -383,6 +383,7 @@ export const registerDev = (program: Command) => {

 // If --no-browser provided, launch terminal TUI mode
 if (!opts.browser) {
 requireTTY();
 // Enter alternate screen buffer for fullscreen mode
 process.stdout.write(ENTER_ALT_SCREEN);

Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/invoke/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { InvokeScreen } from '../../tui/screens/invoke';
import { parseHeaderFlags } from '../shared/header-utils';
import { handleInvoke, loadInvokeConfig } from './action';
Expand DownExpand Up@@ -168,6 +168,7 @@ export const registerInvoke = (program: Command) => {
 });
 } else {
 // No CLI options - interactive TUI mode (headers still passed if provided)
 requireTTY();
 const { waitUntilExit, unmount } = render(
 <InvokeScreen
 isInteractive={true}
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/remove/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
import { ConfigIO } from '../../../lib';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { RemoveAllScreen, RemoveFlow } from '../../tui/screens/remove';
import type { RemoveAllOptions, RemoveResult } from './types';
import { validateRemoveAllOptions } from './validate';
Expand DownExpand Up@@ -76,6 +76,7 @@ export const registerRemove = (program: Command): Command => {
 json: cliOptions.json,
 });
 } else {
 requireTTY();
 const { unmount } = render(
 <RemoveAllScreen
 isInteractive={false}
Expand DownExpand Up@@ -112,6 +113,7 @@ export const registerRemove = (program: Command): Command => {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <RemoveFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/AgentPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -35,6 +35,7 @@ import { executeImportAgent } from '../operations/agent/import';
import { setupPythonProject } from '../operations/python';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { createRenderer } from '../templates';
import { requireTTY } from '../tui/guards/tty';
import type { GenerateConfig, MemoryOption } from '../tui/screens/generate/types';
import { BasePrimitive } from './BasePrimitive';
import { CredentialPrimitive } from './CredentialPrimitive';
Expand DownExpand Up@@ -332,6 +333,7 @@ export class AgentPrimitive extends BasePrimitive<AddAgentOptions, RemovableReso
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/BasePrimitive.ts

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Expand Up@@ -2,6 +2,7 @@ import { ConfigIO, findConfigRoot } from '../../lib';
import type { AgentCoreProjectSpec } from '../../schema';
import type { ResourceType } from '../commands/remove/types';
import { getErrorMessage } from '../errors';
import { requireTTY } from '../tui/guards/tty';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource, RemovalPreview, RemovalResult } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -133,6 +134,7 @@ export abstract class BasePrimitive<
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/CredentialPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -4,6 +4,7 @@ import { CredentialSchema } from '../../schema';
import { validateAddCredentialOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { computeDefaultCredentialEnvVarName } from './credential-utils';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -339,6 +340,7 @@ export class CredentialPrimitive extends BasePrimitive<AddCredentialOptions, Rem
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/EvaluatorPrimitive.ts

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Expand Up@@ -4,6 +4,7 @@ import { EvaluationLevelSchema, EvaluatorSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { renderCodeBasedEvaluatorTemplate } from '../templates/EvaluatorRenderer';
import { requireTTY } from '../tui/guards/tty';
import {
 LEVEL_PLACEHOLDERS,
 RATING_SCALE_PRESETS,
Expand DownExpand Up@@ -316,6 +317,7 @@ export class EvaluatorPrimitive extends BasePrimitive<AddEvaluatorOptions, Remov
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayPrimitive.ts

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Expand Up@@ -12,6 +12,7 @@ import type { AddGatewayOptions as CLIAddGatewayOptions } from '../commands/add/
import { validateAddGatewayOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import type { AddGatewayConfig } from '../tui/screens/mcp/types';
import { BasePrimitive } from './BasePrimitive';
import { buildAuthorizerConfigFromJwtConfig, createManagedOAuthCredential } from './auth-utils';
Expand DownExpand Up@@ -271,6 +272,7 @@ export class GatewayPrimitive extends BasePrimitive<AddGatewayOptions, Removable
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayTargetPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -15,6 +15,7 @@ import { getErrorMessage } from '../errors';
import type { RemovableGatewayTarget } from '../operations/remove/remove-gateway-target';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { getTemplateToolDefinitions, renderGatewayTargetTemplate } from '../templates/GatewayTargetRenderer';
import { requireTTY } from '../tui/guards/tty';
import type {
 ApiGatewayTargetConfig,
 GatewayTargetWizardState,
Expand DownExpand Up@@ -508,6 +509,7 @@ export class GatewayTargetPrimitive extends BasePrimitive<AddGatewayTargetOption
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/MemoryPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ import {
import { DEFAULT_DELIVERY_TYPE, validateAddMemoryOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { DEFAULT_EVENT_EXPIRY } from '../tui/screens/memory/types';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -230,6 +231,7 @@ export class MemoryPrimitive extends BasePrimitive<AddMemoryOptions, RemovableMe
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/OnlineEvalConfigPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { OnlineEvalConfig } from '../../schema';
import { OnlineEvalConfigSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -171,6 +172,7 @@ export class OnlineEvalConfigPrimitive extends BasePrimitive<AddOnlineEvalConfig
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyEnginePrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { AgentCoreProjectSpec, PolicyEngine } from '../../schema';
import { PolicyEngineModeSchema, PolicyEngineSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -261,6 +262,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -326,6 +328,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@ import { detectRegion } from '../aws';
import { getPolicyGeneration, startPolicyGeneration } from '../aws/policy-generation';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -343,6 +344,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -417,6 +419,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

1 change: 1 addition & 0 deletions
src/cli/tui/guards/index.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,3 +5,4 @@ export {
 MissingProjectMessage,
 WrongDirectoryMessage,
} from './project';
export { requireTTY } from './tty';

13 changes: 13 additions & 0 deletions
src/cli/tui/guards/tty.ts

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
/**
 * Guard that checks for an interactive terminal and exits if not found.
 * Prevents TUI flows from hanging in CI, piped stdin, or agent automation.
 *
 * Checks both stdin (Ink reads keyboard input) and stdout (Ink renders TUI output).
 * Either being non-TTY means the TUI cannot function.
 */
export function requireTTY(): void {
 if (!process.stdin.isTTY || !process.stdout.isTTY) {
 console.error('Error: This command requires an interactive terminal. Use --help to see non-interactive flags.');
 process.exit(1);
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs#949

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 Merged

jesseturner21
merged 2 commits into

from

Apr 24, 2026
 Merged


fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs
#949
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af3a737

fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs


jesseturner21 Apr 24, 2026
03d3b3f

fix: check both stdin and stdout isTTY in requireTTY guard


jesseturner21 Apr 24, 2026

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2 changes: 2 additions & 0 deletions
src/cli/cli.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -26,6 +26,7 @@ import { LayoutProvider } from './tui/context';
import { COMMAND_DESCRIPTIONS } from './tui/copy';
import { clearExitAction, getExitAction } from './tui/exit-action';
import { clearExitMessage, getExitMessage } from './tui/exit-message';
import { requireTTY } from './tui/guards';
import { CommandListScreen } from './tui/screens/home';
import { getCommandsForUI } from './tui/utils';
import { type UpdateCheckResult, checkForUpdate, printUpdateNotification } from './update-notifier';
Expand DownExpand Up@@ -212,6 +213,7 @@ export const main = async (argv: string[]) => {

 // Show TUI for no arguments, commander handles --help via configureHelp()
 if (args.length === 0) {
 requireTTY();
 renderTUI(updateCheck, isFirstRun);
 return;
 }
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/add/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { AddFlow } from '../../tui/screens/add/AddFlow';
import type { Command } from '@commander-js/extra-typings';
import { render } from 'ink';
Expand All@@ -21,6 +21,7 @@ export function registerAdd(program: Command): Command {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <AddFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/commands/create/command.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -10,6 +10,7 @@ import type {
import { LIFECYCLE_TIMEOUT_MAX, LIFECYCLE_TIMEOUT_MIN } from '../../../schema';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireTTY } from '../../tui/guards';
import { CreateScreen } from '../../tui/screens/create';
import { parseCommaSeparatedList } from '../shared/vpc-utils';
import { type ProgressCallback, createProject, createProjectWithAgent, getDryRunInfo } from './action';
Expand DownExpand Up@@ -245,6 +246,7 @@ export const registerCreate = (program: Command) => {
 options.language = options.language ?? 'Python';
 await handleCreateCLI(options as CreateOptions);
 } else {
 requireTTY();
 handleCreateTUI();
 }
 } catch (error) {
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/deploy/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { DeployScreen } from '../../tui/screens/deploy/DeployScreen';
import { handleDeploy } from './actions';
import type { DeployOptions } from './types';
Expand DownExpand Up@@ -160,8 +160,10 @@ export const registerDeploy = (program: Command) => {
 await handleDeployCLI(options as DeployOptions);
 } else if (cliOptions.diff) {
 // Diff-only: use TUI with diff mode
 requireTTY();
 handleDeployTUI({ diffMode: true });
 } else {
 requireTTY();
 handleDeployTUI();
 }
 } catch (error) {
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/dev/command.tsx

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Expand Up@@ -21,7 +21,7 @@ import { OtelCollector, startOtelCollector } from '../../operations/dev/otel';
import { FatalError } from '../../tui/components';
import { LayoutProvider } from '../../tui/context';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { parseHeaderFlags } from '../shared/header-utils';
import { runBrowserMode } from './browser-mode';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -383,6 +383,7 @@ export const registerDev = (program: Command) => {

 // If --no-browser provided, launch terminal TUI mode
 if (!opts.browser) {
 requireTTY();
 // Enter alternate screen buffer for fullscreen mode
 process.stdout.write(ENTER_ALT_SCREEN);

Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/invoke/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { InvokeScreen } from '../../tui/screens/invoke';
import { parseHeaderFlags } from '../shared/header-utils';
import { handleInvoke, loadInvokeConfig } from './action';
Expand DownExpand Up@@ -168,6 +168,7 @@ export const registerInvoke = (program: Command) => {
 });
 } else {
 // No CLI options - interactive TUI mode (headers still passed if provided)
 requireTTY();
 const { waitUntilExit, unmount } = render(
 <InvokeScreen
 isInteractive={true}
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/remove/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
import { ConfigIO } from '../../../lib';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { RemoveAllScreen, RemoveFlow } from '../../tui/screens/remove';
import type { RemoveAllOptions, RemoveResult } from './types';
import { validateRemoveAllOptions } from './validate';
Expand DownExpand Up@@ -76,6 +76,7 @@ export const registerRemove = (program: Command): Command => {
 json: cliOptions.json,
 });
 } else {
 requireTTY();
 const { unmount } = render(
 <RemoveAllScreen
 isInteractive={false}
Expand DownExpand Up@@ -112,6 +113,7 @@ export const registerRemove = (program: Command): Command => {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <RemoveFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/AgentPrimitive.tsx

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Expand Up@@ -35,6 +35,7 @@ import { executeImportAgent } from '../operations/agent/import';
import { setupPythonProject } from '../operations/python';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { createRenderer } from '../templates';
import { requireTTY } from '../tui/guards/tty';
import type { GenerateConfig, MemoryOption } from '../tui/screens/generate/types';
import { BasePrimitive } from './BasePrimitive';
import { CredentialPrimitive } from './CredentialPrimitive';
Expand DownExpand Up@@ -332,6 +333,7 @@ export class AgentPrimitive extends BasePrimitive<AddAgentOptions, RemovableReso
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/BasePrimitive.ts

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Expand Up@@ -2,6 +2,7 @@ import { ConfigIO, findConfigRoot } from '../../lib';
import type { AgentCoreProjectSpec } from '../../schema';
import type { ResourceType } from '../commands/remove/types';
import { getErrorMessage } from '../errors';
import { requireTTY } from '../tui/guards/tty';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource, RemovalPreview, RemovalResult } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -133,6 +134,7 @@ export abstract class BasePrimitive<
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/CredentialPrimitive.tsx

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Expand Up@@ -4,6 +4,7 @@ import { CredentialSchema } from '../../schema';
import { validateAddCredentialOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { computeDefaultCredentialEnvVarName } from './credential-utils';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -339,6 +340,7 @@ export class CredentialPrimitive extends BasePrimitive<AddCredentialOptions, Rem
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/EvaluatorPrimitive.ts

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Expand Up@@ -4,6 +4,7 @@ import { EvaluationLevelSchema, EvaluatorSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { renderCodeBasedEvaluatorTemplate } from '../templates/EvaluatorRenderer';
import { requireTTY } from '../tui/guards/tty';
import {
 LEVEL_PLACEHOLDERS,
 RATING_SCALE_PRESETS,
Expand DownExpand Up@@ -316,6 +317,7 @@ export class EvaluatorPrimitive extends BasePrimitive<AddEvaluatorOptions, Remov
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayPrimitive.ts

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Expand Up@@ -12,6 +12,7 @@ import type { AddGatewayOptions as CLIAddGatewayOptions } from '../commands/add/
import { validateAddGatewayOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import type { AddGatewayConfig } from '../tui/screens/mcp/types';
import { BasePrimitive } from './BasePrimitive';
import { buildAuthorizerConfigFromJwtConfig, createManagedOAuthCredential } from './auth-utils';
Expand DownExpand Up@@ -271,6 +272,7 @@ export class GatewayPrimitive extends BasePrimitive<AddGatewayOptions, Removable
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayTargetPrimitive.ts

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Expand Up@@ -15,6 +15,7 @@ import { getErrorMessage } from '../errors';
import type { RemovableGatewayTarget } from '../operations/remove/remove-gateway-target';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { getTemplateToolDefinitions, renderGatewayTargetTemplate } from '../templates/GatewayTargetRenderer';
import { requireTTY } from '../tui/guards/tty';
import type {
 ApiGatewayTargetConfig,
 GatewayTargetWizardState,
Expand DownExpand Up@@ -508,6 +509,7 @@ export class GatewayTargetPrimitive extends BasePrimitive<AddGatewayTargetOption
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/MemoryPrimitive.tsx

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Expand Up@@ -17,6 +17,7 @@ import {
import { DEFAULT_DELIVERY_TYPE, validateAddMemoryOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { DEFAULT_EVENT_EXPIRY } from '../tui/screens/memory/types';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -230,6 +231,7 @@ export class MemoryPrimitive extends BasePrimitive<AddMemoryOptions, RemovableMe
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/OnlineEvalConfigPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { OnlineEvalConfig } from '../../schema';
import { OnlineEvalConfigSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -171,6 +172,7 @@ export class OnlineEvalConfigPrimitive extends BasePrimitive<AddOnlineEvalConfig
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyEnginePrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { AgentCoreProjectSpec, PolicyEngine } from '../../schema';
import { PolicyEngineModeSchema, PolicyEngineSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -261,6 +262,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -326,6 +328,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@ import { detectRegion } from '../aws';
import { getPolicyGeneration, startPolicyGeneration } from '../aws/policy-generation';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -343,6 +344,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -417,6 +419,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

1 change: 1 addition & 0 deletions
src/cli/tui/guards/index.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,3 +5,4 @@ export {
 MissingProjectMessage,
 WrongDirectoryMessage,
} from './project';
export { requireTTY } from './tty';

13 changes: 13 additions & 0 deletions
src/cli/tui/guards/tty.ts

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
/**
 * Guard that checks for an interactive terminal and exits if not found.
 * Prevents TUI flows from hanging in CI, piped stdin, or agent automation.
 *
 * Checks both stdin (Ink reads keyboard input) and stdout (Ink renders TUI output).
 * Either being non-TTY means the TUI cannot function.
 */
export function requireTTY(): void {
 if (!process.stdin.isTTY || !process.stdout.isTTY) {
 console.error('Error: This command requires an interactive terminal. Use --help to see non-interactive flags.');
 process.exit(1);
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs#949

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 Merged

jesseturner21
merged 2 commits into

from

Apr 24, 2026
 Merged


fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs
#949
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af3a737

fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs


jesseturner21 Apr 24, 2026
03d3b3f

fix: check both stdin and stdout isTTY in requireTTY guard


jesseturner21 Apr 24, 2026

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2 changes: 2 additions & 0 deletions
src/cli/cli.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -26,6 +26,7 @@ import { LayoutProvider } from './tui/context';
import { COMMAND_DESCRIPTIONS } from './tui/copy';
import { clearExitAction, getExitAction } from './tui/exit-action';
import { clearExitMessage, getExitMessage } from './tui/exit-message';
import { requireTTY } from './tui/guards';
import { CommandListScreen } from './tui/screens/home';
import { getCommandsForUI } from './tui/utils';
import { type UpdateCheckResult, checkForUpdate, printUpdateNotification } from './update-notifier';
Expand DownExpand Up@@ -212,6 +213,7 @@ export const main = async (argv: string[]) => {

 // Show TUI for no arguments, commander handles --help via configureHelp()
 if (args.length === 0) {
 requireTTY();
 renderTUI(updateCheck, isFirstRun);
 return;
 }
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/add/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { AddFlow } from '../../tui/screens/add/AddFlow';
import type { Command } from '@commander-js/extra-typings';
import { render } from 'ink';
Expand All@@ -21,6 +21,7 @@ export function registerAdd(program: Command): Command {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <AddFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/commands/create/command.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -10,6 +10,7 @@ import type {
import { LIFECYCLE_TIMEOUT_MAX, LIFECYCLE_TIMEOUT_MIN } from '../../../schema';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireTTY } from '../../tui/guards';
import { CreateScreen } from '../../tui/screens/create';
import { parseCommaSeparatedList } from '../shared/vpc-utils';
import { type ProgressCallback, createProject, createProjectWithAgent, getDryRunInfo } from './action';
Expand DownExpand Up@@ -245,6 +246,7 @@ export const registerCreate = (program: Command) => {
 options.language = options.language ?? 'Python';
 await handleCreateCLI(options as CreateOptions);
 } else {
 requireTTY();
 handleCreateTUI();
 }
 } catch (error) {
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/deploy/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { DeployScreen } from '../../tui/screens/deploy/DeployScreen';
import { handleDeploy } from './actions';
import type { DeployOptions } from './types';
Expand DownExpand Up@@ -160,8 +160,10 @@ export const registerDeploy = (program: Command) => {
 await handleDeployCLI(options as DeployOptions);
 } else if (cliOptions.diff) {
 // Diff-only: use TUI with diff mode
 requireTTY();
 handleDeployTUI({ diffMode: true });
 } else {
 requireTTY();
 handleDeployTUI();
 }
 } catch (error) {
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/dev/command.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,7 +21,7 @@ import { OtelCollector, startOtelCollector } from '../../operations/dev/otel';
import { FatalError } from '../../tui/components';
import { LayoutProvider } from '../../tui/context';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { parseHeaderFlags } from '../shared/header-utils';
import { runBrowserMode } from './browser-mode';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -383,6 +383,7 @@ export const registerDev = (program: Command) => {

 // If --no-browser provided, launch terminal TUI mode
 if (!opts.browser) {
 requireTTY();
 // Enter alternate screen buffer for fullscreen mode
 process.stdout.write(ENTER_ALT_SCREEN);

Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/invoke/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { InvokeScreen } from '../../tui/screens/invoke';
import { parseHeaderFlags } from '../shared/header-utils';
import { handleInvoke, loadInvokeConfig } from './action';
Expand DownExpand Up@@ -168,6 +168,7 @@ export const registerInvoke = (program: Command) => {
 });
 } else {
 // No CLI options - interactive TUI mode (headers still passed if provided)
 requireTTY();
 const { waitUntilExit, unmount } = render(
 <InvokeScreen
 isInteractive={true}
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/remove/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
import { ConfigIO } from '../../../lib';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { RemoveAllScreen, RemoveFlow } from '../../tui/screens/remove';
import type { RemoveAllOptions, RemoveResult } from './types';
import { validateRemoveAllOptions } from './validate';
Expand DownExpand Up@@ -76,6 +76,7 @@ export const registerRemove = (program: Command): Command => {
 json: cliOptions.json,
 });
 } else {
 requireTTY();
 const { unmount } = render(
 <RemoveAllScreen
 isInteractive={false}
Expand DownExpand Up@@ -112,6 +113,7 @@ export const registerRemove = (program: Command): Command => {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <RemoveFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/AgentPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -35,6 +35,7 @@ import { executeImportAgent } from '../operations/agent/import';
import { setupPythonProject } from '../operations/python';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { createRenderer } from '../templates';
import { requireTTY } from '../tui/guards/tty';
import type { GenerateConfig, MemoryOption } from '../tui/screens/generate/types';
import { BasePrimitive } from './BasePrimitive';
import { CredentialPrimitive } from './CredentialPrimitive';
Expand DownExpand Up@@ -332,6 +333,7 @@ export class AgentPrimitive extends BasePrimitive<AddAgentOptions, RemovableReso
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/BasePrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,7 @@ import { ConfigIO, findConfigRoot } from '../../lib';
import type { AgentCoreProjectSpec } from '../../schema';
import type { ResourceType } from '../commands/remove/types';
import { getErrorMessage } from '../errors';
import { requireTTY } from '../tui/guards/tty';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource, RemovalPreview, RemovalResult } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -133,6 +134,7 @@ export abstract class BasePrimitive<
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/CredentialPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -4,6 +4,7 @@ import { CredentialSchema } from '../../schema';
import { validateAddCredentialOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { computeDefaultCredentialEnvVarName } from './credential-utils';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -339,6 +340,7 @@ export class CredentialPrimitive extends BasePrimitive<AddCredentialOptions, Rem
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/EvaluatorPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -4,6 +4,7 @@ import { EvaluationLevelSchema, EvaluatorSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { renderCodeBasedEvaluatorTemplate } from '../templates/EvaluatorRenderer';
import { requireTTY } from '../tui/guards/tty';
import {
 LEVEL_PLACEHOLDERS,
 RATING_SCALE_PRESETS,
Expand DownExpand Up@@ -316,6 +317,7 @@ export class EvaluatorPrimitive extends BasePrimitive<AddEvaluatorOptions, Remov
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,7 @@ import type { AddGatewayOptions as CLIAddGatewayOptions } from '../commands/add/
import { validateAddGatewayOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import type { AddGatewayConfig } from '../tui/screens/mcp/types';
import { BasePrimitive } from './BasePrimitive';
import { buildAuthorizerConfigFromJwtConfig, createManagedOAuthCredential } from './auth-utils';
Expand DownExpand Up@@ -271,6 +272,7 @@ export class GatewayPrimitive extends BasePrimitive<AddGatewayOptions, Removable
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayTargetPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -15,6 +15,7 @@ import { getErrorMessage } from '../errors';
import type { RemovableGatewayTarget } from '../operations/remove/remove-gateway-target';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { getTemplateToolDefinitions, renderGatewayTargetTemplate } from '../templates/GatewayTargetRenderer';
import { requireTTY } from '../tui/guards/tty';
import type {
 ApiGatewayTargetConfig,
 GatewayTargetWizardState,
Expand DownExpand Up@@ -508,6 +509,7 @@ export class GatewayTargetPrimitive extends BasePrimitive<AddGatewayTargetOption
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/MemoryPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ import {
import { DEFAULT_DELIVERY_TYPE, validateAddMemoryOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { DEFAULT_EVENT_EXPIRY } from '../tui/screens/memory/types';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -230,6 +231,7 @@ export class MemoryPrimitive extends BasePrimitive<AddMemoryOptions, RemovableMe
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/OnlineEvalConfigPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { OnlineEvalConfig } from '../../schema';
import { OnlineEvalConfigSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -171,6 +172,7 @@ export class OnlineEvalConfigPrimitive extends BasePrimitive<AddOnlineEvalConfig
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyEnginePrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { AgentCoreProjectSpec, PolicyEngine } from '../../schema';
import { PolicyEngineModeSchema, PolicyEngineSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -261,6 +262,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -326,6 +328,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@ import { detectRegion } from '../aws';
import { getPolicyGeneration, startPolicyGeneration } from '../aws/policy-generation';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -343,6 +344,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -417,6 +419,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

1 change: 1 addition & 0 deletions
src/cli/tui/guards/index.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -5,3 +5,4 @@ export {
 MissingProjectMessage,
 WrongDirectoryMessage,
} from './project';
export { requireTTY } from './tty';

13 changes: 13 additions & 0 deletions
src/cli/tui/guards/tty.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
/**
 * Guard that checks for an interactive terminal and exits if not found.
 * Prevents TUI flows from hanging in CI, piped stdin, or agent automation.
 *
 * Checks both stdin (Ink reads keyboard input) and stdout (Ink renders TUI output).
 * Either being non-TTY means the TUI cannot function.
 */
export function requireTTY(): void {
 if (!process.stdin.isTTY || !process.stdout.isTTY) {
 console.error('Error: This command requires an interactive terminal. Use --help to see non-interactive flags.');
 process.exit(1);
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs#949

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to your account

 Merged

jesseturner21
merged 2 commits into

from

Apr 24, 2026
 Merged


fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs
#949
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af3a737

fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs


jesseturner21 Apr 24, 2026
03d3b3f

fix: check both stdin and stdout isTTY in requireTTY guard


jesseturner21 Apr 24, 2026

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2 changes: 2 additions & 0 deletions
src/cli/cli.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -26,6 +26,7 @@ import { LayoutProvider } from './tui/context';
import { COMMAND_DESCRIPTIONS } from './tui/copy';
import { clearExitAction, getExitAction } from './tui/exit-action';
import { clearExitMessage, getExitMessage } from './tui/exit-message';
import { requireTTY } from './tui/guards';
import { CommandListScreen } from './tui/screens/home';
import { getCommandsForUI } from './tui/utils';
import { type UpdateCheckResult, checkForUpdate, printUpdateNotification } from './update-notifier';
Expand DownExpand Up@@ -212,6 +213,7 @@ export const main = async (argv: string[]) => {

 // Show TUI for no arguments, commander handles --help via configureHelp()
 if (args.length === 0) {
 requireTTY();
 renderTUI(updateCheck, isFirstRun);
 return;
 }
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/add/command.tsx

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { AddFlow } from '../../tui/screens/add/AddFlow';
import type { Command } from '@commander-js/extra-typings';
import { render } from 'ink';
Expand All@@ -21,6 +21,7 @@ export function registerAdd(program: Command): Command {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <AddFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/commands/create/command.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -10,6 +10,7 @@ import type {
import { LIFECYCLE_TIMEOUT_MAX, LIFECYCLE_TIMEOUT_MIN } from '../../../schema';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireTTY } from '../../tui/guards';
import { CreateScreen } from '../../tui/screens/create';
import { parseCommaSeparatedList } from '../shared/vpc-utils';
import { type ProgressCallback, createProject, createProjectWithAgent, getDryRunInfo } from './action';
Expand DownExpand Up@@ -245,6 +246,7 @@ export const registerCreate = (program: Command) => {
 options.language = options.language ?? 'Python';
 await handleCreateCLI(options as CreateOptions);
 } else {
 requireTTY();
 handleCreateTUI();
 }
 } catch (error) {
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/deploy/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { DeployScreen } from '../../tui/screens/deploy/DeployScreen';
import { handleDeploy } from './actions';
import type { DeployOptions } from './types';
Expand DownExpand Up@@ -160,8 +160,10 @@ export const registerDeploy = (program: Command) => {
 await handleDeployCLI(options as DeployOptions);
 } else if (cliOptions.diff) {
 // Diff-only: use TUI with diff mode
 requireTTY();
 handleDeployTUI({ diffMode: true });
 } else {
 requireTTY();
 handleDeployTUI();
 }
 } catch (error) {
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/dev/command.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,7 +21,7 @@ import { OtelCollector, startOtelCollector } from '../../operations/dev/otel';
import { FatalError } from '../../tui/components';
import { LayoutProvider } from '../../tui/context';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { parseHeaderFlags } from '../shared/header-utils';
import { runBrowserMode } from './browser-mode';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -383,6 +383,7 @@ export const registerDev = (program: Command) => {

 // If --no-browser provided, launch terminal TUI mode
 if (!opts.browser) {
 requireTTY();
 // Enter alternate screen buffer for fullscreen mode
 process.stdout.write(ENTER_ALT_SCREEN);

Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/invoke/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { InvokeScreen } from '../../tui/screens/invoke';
import { parseHeaderFlags } from '../shared/header-utils';
import { handleInvoke, loadInvokeConfig } from './action';
Expand DownExpand Up@@ -168,6 +168,7 @@ export const registerInvoke = (program: Command) => {
 });
 } else {
 // No CLI options - interactive TUI mode (headers still passed if provided)
 requireTTY();
 const { waitUntilExit, unmount } = render(
 <InvokeScreen
 isInteractive={true}
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/remove/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
import { ConfigIO } from '../../../lib';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { RemoveAllScreen, RemoveFlow } from '../../tui/screens/remove';
import type { RemoveAllOptions, RemoveResult } from './types';
import { validateRemoveAllOptions } from './validate';
Expand DownExpand Up@@ -76,6 +76,7 @@ export const registerRemove = (program: Command): Command => {
 json: cliOptions.json,
 });
 } else {
 requireTTY();
 const { unmount } = render(
 <RemoveAllScreen
 isInteractive={false}
Expand DownExpand Up@@ -112,6 +113,7 @@ export const registerRemove = (program: Command): Command => {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <RemoveFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/AgentPrimitive.tsx

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Expand Up@@ -35,6 +35,7 @@ import { executeImportAgent } from '../operations/agent/import';
import { setupPythonProject } from '../operations/python';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { createRenderer } from '../templates';
import { requireTTY } from '../tui/guards/tty';
import type { GenerateConfig, MemoryOption } from '../tui/screens/generate/types';
import { BasePrimitive } from './BasePrimitive';
import { CredentialPrimitive } from './CredentialPrimitive';
Expand DownExpand Up@@ -332,6 +333,7 @@ export class AgentPrimitive extends BasePrimitive<AddAgentOptions, RemovableReso
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/BasePrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,7 @@ import { ConfigIO, findConfigRoot } from '../../lib';
import type { AgentCoreProjectSpec } from '../../schema';
import type { ResourceType } from '../commands/remove/types';
import { getErrorMessage } from '../errors';
import { requireTTY } from '../tui/guards/tty';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource, RemovalPreview, RemovalResult } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -133,6 +134,7 @@ export abstract class BasePrimitive<
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/CredentialPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -4,6 +4,7 @@ import { CredentialSchema } from '../../schema';
import { validateAddCredentialOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { computeDefaultCredentialEnvVarName } from './credential-utils';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -339,6 +340,7 @@ export class CredentialPrimitive extends BasePrimitive<AddCredentialOptions, Rem
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/EvaluatorPrimitive.ts

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Expand Up@@ -4,6 +4,7 @@ import { EvaluationLevelSchema, EvaluatorSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { renderCodeBasedEvaluatorTemplate } from '../templates/EvaluatorRenderer';
import { requireTTY } from '../tui/guards/tty';
import {
 LEVEL_PLACEHOLDERS,
 RATING_SCALE_PRESETS,
Expand DownExpand Up@@ -316,6 +317,7 @@ export class EvaluatorPrimitive extends BasePrimitive<AddEvaluatorOptions, Remov
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayPrimitive.ts

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Expand Up@@ -12,6 +12,7 @@ import type { AddGatewayOptions as CLIAddGatewayOptions } from '../commands/add/
import { validateAddGatewayOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import type { AddGatewayConfig } from '../tui/screens/mcp/types';
import { BasePrimitive } from './BasePrimitive';
import { buildAuthorizerConfigFromJwtConfig, createManagedOAuthCredential } from './auth-utils';
Expand DownExpand Up@@ -271,6 +272,7 @@ export class GatewayPrimitive extends BasePrimitive<AddGatewayOptions, Removable
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayTargetPrimitive.ts

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Expand Up@@ -15,6 +15,7 @@ import { getErrorMessage } from '../errors';
import type { RemovableGatewayTarget } from '../operations/remove/remove-gateway-target';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { getTemplateToolDefinitions, renderGatewayTargetTemplate } from '../templates/GatewayTargetRenderer';
import { requireTTY } from '../tui/guards/tty';
import type {
 ApiGatewayTargetConfig,
 GatewayTargetWizardState,
Expand DownExpand Up@@ -508,6 +509,7 @@ export class GatewayTargetPrimitive extends BasePrimitive<AddGatewayTargetOption
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/MemoryPrimitive.tsx

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Expand Up@@ -17,6 +17,7 @@ import {
import { DEFAULT_DELIVERY_TYPE, validateAddMemoryOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { DEFAULT_EVENT_EXPIRY } from '../tui/screens/memory/types';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -230,6 +231,7 @@ export class MemoryPrimitive extends BasePrimitive<AddMemoryOptions, RemovableMe
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/OnlineEvalConfigPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { OnlineEvalConfig } from '../../schema';
import { OnlineEvalConfigSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -171,6 +172,7 @@ export class OnlineEvalConfigPrimitive extends BasePrimitive<AddOnlineEvalConfig
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyEnginePrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { AgentCoreProjectSpec, PolicyEngine } from '../../schema';
import { PolicyEngineModeSchema, PolicyEngineSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -261,6 +262,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -326,6 +328,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyPrimitive.ts

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Expand Up@@ -5,6 +5,7 @@ import { detectRegion } from '../aws';
import { getPolicyGeneration, startPolicyGeneration } from '../aws/policy-generation';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -343,6 +344,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -417,6 +419,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

1 change: 1 addition & 0 deletions
src/cli/tui/guards/index.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,3 +5,4 @@ export {
 MissingProjectMessage,
 WrongDirectoryMessage,
} from './project';
export { requireTTY } from './tty';

13 changes: 13 additions & 0 deletions
src/cli/tui/guards/tty.ts

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
/**
 * Guard that checks for an interactive terminal and exits if not found.
 * Prevents TUI flows from hanging in CI, piped stdin, or agent automation.
 *
 * Checks both stdin (Ink reads keyboard input) and stdout (Ink renders TUI output).
 * Either being non-TTY means the TUI cannot function.
 */
export function requireTTY(): void {
 if (!process.stdin.isTTY || !process.stdout.isTTY) {
 console.error('Error: This command requires an interactive terminal. Use --help to see non-interactive flags.');
 process.exit(1);
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs#949

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 Merged

jesseturner21
merged 2 commits into

from

Apr 24, 2026
 Merged


fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs
#949
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af3a737

fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs


jesseturner21 Apr 24, 2026
03d3b3f

fix: check both stdin and stdout isTTY in requireTTY guard


jesseturner21 Apr 24, 2026

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2 changes: 2 additions & 0 deletions
src/cli/cli.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -26,6 +26,7 @@ import { LayoutProvider } from './tui/context';
import { COMMAND_DESCRIPTIONS } from './tui/copy';
import { clearExitAction, getExitAction } from './tui/exit-action';
import { clearExitMessage, getExitMessage } from './tui/exit-message';
import { requireTTY } from './tui/guards';
import { CommandListScreen } from './tui/screens/home';
import { getCommandsForUI } from './tui/utils';
import { type UpdateCheckResult, checkForUpdate, printUpdateNotification } from './update-notifier';
Expand DownExpand Up@@ -212,6 +213,7 @@ export const main = async (argv: string[]) => {

 // Show TUI for no arguments, commander handles --help via configureHelp()
 if (args.length === 0) {
 requireTTY();
 renderTUI(updateCheck, isFirstRun);
 return;
 }
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/add/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { AddFlow } from '../../tui/screens/add/AddFlow';
import type { Command } from '@commander-js/extra-typings';
import { render } from 'ink';
Expand All@@ -21,6 +21,7 @@ export function registerAdd(program: Command): Command {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <AddFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/commands/create/command.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -10,6 +10,7 @@ import type {
import { LIFECYCLE_TIMEOUT_MAX, LIFECYCLE_TIMEOUT_MIN } from '../../../schema';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireTTY } from '../../tui/guards';
import { CreateScreen } from '../../tui/screens/create';
import { parseCommaSeparatedList } from '../shared/vpc-utils';
import { type ProgressCallback, createProject, createProjectWithAgent, getDryRunInfo } from './action';
Expand DownExpand Up@@ -245,6 +246,7 @@ export const registerCreate = (program: Command) => {
 options.language = options.language ?? 'Python';
 await handleCreateCLI(options as CreateOptions);
 } else {
 requireTTY();
 handleCreateTUI();
 }
 } catch (error) {
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/deploy/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { DeployScreen } from '../../tui/screens/deploy/DeployScreen';
import { handleDeploy } from './actions';
import type { DeployOptions } from './types';
Expand DownExpand Up@@ -160,8 +160,10 @@ export const registerDeploy = (program: Command) => {
 await handleDeployCLI(options as DeployOptions);
 } else if (cliOptions.diff) {
 // Diff-only: use TUI with diff mode
 requireTTY();
 handleDeployTUI({ diffMode: true });
 } else {
 requireTTY();
 handleDeployTUI();
 }
 } catch (error) {
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/dev/command.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,7 +21,7 @@ import { OtelCollector, startOtelCollector } from '../../operations/dev/otel';
import { FatalError } from '../../tui/components';
import { LayoutProvider } from '../../tui/context';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { parseHeaderFlags } from '../shared/header-utils';
import { runBrowserMode } from './browser-mode';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -383,6 +383,7 @@ export const registerDev = (program: Command) => {

 // If --no-browser provided, launch terminal TUI mode
 if (!opts.browser) {
 requireTTY();
 // Enter alternate screen buffer for fullscreen mode
 process.stdout.write(ENTER_ALT_SCREEN);

Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/invoke/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { InvokeScreen } from '../../tui/screens/invoke';
import { parseHeaderFlags } from '../shared/header-utils';
import { handleInvoke, loadInvokeConfig } from './action';
Expand DownExpand Up@@ -168,6 +168,7 @@ export const registerInvoke = (program: Command) => {
 });
 } else {
 // No CLI options - interactive TUI mode (headers still passed if provided)
 requireTTY();
 const { waitUntilExit, unmount } = render(
 <InvokeScreen
 isInteractive={true}
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/remove/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
import { ConfigIO } from '../../../lib';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { RemoveAllScreen, RemoveFlow } from '../../tui/screens/remove';
import type { RemoveAllOptions, RemoveResult } from './types';
import { validateRemoveAllOptions } from './validate';
Expand DownExpand Up@@ -76,6 +76,7 @@ export const registerRemove = (program: Command): Command => {
 json: cliOptions.json,
 });
 } else {
 requireTTY();
 const { unmount } = render(
 <RemoveAllScreen
 isInteractive={false}
Expand DownExpand Up@@ -112,6 +113,7 @@ export const registerRemove = (program: Command): Command => {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <RemoveFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/AgentPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -35,6 +35,7 @@ import { executeImportAgent } from '../operations/agent/import';
import { setupPythonProject } from '../operations/python';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { createRenderer } from '../templates';
import { requireTTY } from '../tui/guards/tty';
import type { GenerateConfig, MemoryOption } from '../tui/screens/generate/types';
import { BasePrimitive } from './BasePrimitive';
import { CredentialPrimitive } from './CredentialPrimitive';
Expand DownExpand Up@@ -332,6 +333,7 @@ export class AgentPrimitive extends BasePrimitive<AddAgentOptions, RemovableReso
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/BasePrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,7 @@ import { ConfigIO, findConfigRoot } from '../../lib';
import type { AgentCoreProjectSpec } from '../../schema';
import type { ResourceType } from '../commands/remove/types';
import { getErrorMessage } from '../errors';
import { requireTTY } from '../tui/guards/tty';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource, RemovalPreview, RemovalResult } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -133,6 +134,7 @@ export abstract class BasePrimitive<
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/CredentialPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -4,6 +4,7 @@ import { CredentialSchema } from '../../schema';
import { validateAddCredentialOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { computeDefaultCredentialEnvVarName } from './credential-utils';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -339,6 +340,7 @@ export class CredentialPrimitive extends BasePrimitive<AddCredentialOptions, Rem
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/EvaluatorPrimitive.ts

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Expand Up@@ -4,6 +4,7 @@ import { EvaluationLevelSchema, EvaluatorSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { renderCodeBasedEvaluatorTemplate } from '../templates/EvaluatorRenderer';
import { requireTTY } from '../tui/guards/tty';
import {
 LEVEL_PLACEHOLDERS,
 RATING_SCALE_PRESETS,
Expand DownExpand Up@@ -316,6 +317,7 @@ export class EvaluatorPrimitive extends BasePrimitive<AddEvaluatorOptions, Remov
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,7 @@ import type { AddGatewayOptions as CLIAddGatewayOptions } from '../commands/add/
import { validateAddGatewayOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import type { AddGatewayConfig } from '../tui/screens/mcp/types';
import { BasePrimitive } from './BasePrimitive';
import { buildAuthorizerConfigFromJwtConfig, createManagedOAuthCredential } from './auth-utils';
Expand DownExpand Up@@ -271,6 +272,7 @@ export class GatewayPrimitive extends BasePrimitive<AddGatewayOptions, Removable
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayTargetPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -15,6 +15,7 @@ import { getErrorMessage } from '../errors';
import type { RemovableGatewayTarget } from '../operations/remove/remove-gateway-target';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { getTemplateToolDefinitions, renderGatewayTargetTemplate } from '../templates/GatewayTargetRenderer';
import { requireTTY } from '../tui/guards/tty';
import type {
 ApiGatewayTargetConfig,
 GatewayTargetWizardState,
Expand DownExpand Up@@ -508,6 +509,7 @@ export class GatewayTargetPrimitive extends BasePrimitive<AddGatewayTargetOption
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/MemoryPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ import {
import { DEFAULT_DELIVERY_TYPE, validateAddMemoryOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { DEFAULT_EVENT_EXPIRY } from '../tui/screens/memory/types';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -230,6 +231,7 @@ export class MemoryPrimitive extends BasePrimitive<AddMemoryOptions, RemovableMe
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/OnlineEvalConfigPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { OnlineEvalConfig } from '../../schema';
import { OnlineEvalConfigSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -171,6 +172,7 @@ export class OnlineEvalConfigPrimitive extends BasePrimitive<AddOnlineEvalConfig
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyEnginePrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { AgentCoreProjectSpec, PolicyEngine } from '../../schema';
import { PolicyEngineModeSchema, PolicyEngineSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -261,6 +262,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -326,6 +328,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@ import { detectRegion } from '../aws';
import { getPolicyGeneration, startPolicyGeneration } from '../aws/policy-generation';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -343,6 +344,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -417,6 +419,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

1 change: 1 addition & 0 deletions
src/cli/tui/guards/index.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,3 +5,4 @@ export {
 MissingProjectMessage,
 WrongDirectoryMessage,
} from './project';
export { requireTTY } from './tty';

13 changes: 13 additions & 0 deletions
src/cli/tui/guards/tty.ts

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
/**
 * Guard that checks for an interactive terminal and exits if not found.
 * Prevents TUI flows from hanging in CI, piped stdin, or agent automation.
 *
 * Checks both stdin (Ink reads keyboard input) and stdout (Ink renders TUI output).
 * Either being non-TTY means the TUI cannot function.
 */
export function requireTTY(): void {
 if (!process.stdin.isTTY || !process.stdout.isTTY) {
 console.error('Error: This command requires an interactive terminal. Use --help to see non-interactive flags.');
 process.exit(1);
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs#949

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 Merged

jesseturner21
merged 2 commits into

from

Apr 24, 2026
 Merged


fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs
#949
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af3a737

fix: add TTY detection before TUI fallbacks to prevent agent/CI hangs


jesseturner21 Apr 24, 2026
03d3b3f

fix: check both stdin and stdout isTTY in requireTTY guard


jesseturner21 Apr 24, 2026

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2 changes: 2 additions & 0 deletions
src/cli/cli.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -26,6 +26,7 @@ import { LayoutProvider } from './tui/context';
import { COMMAND_DESCRIPTIONS } from './tui/copy';
import { clearExitAction, getExitAction } from './tui/exit-action';
import { clearExitMessage, getExitMessage } from './tui/exit-message';
import { requireTTY } from './tui/guards';
import { CommandListScreen } from './tui/screens/home';
import { getCommandsForUI } from './tui/utils';
import { type UpdateCheckResult, checkForUpdate, printUpdateNotification } from './update-notifier';
Expand DownExpand Up@@ -212,6 +213,7 @@ export const main = async (argv: string[]) => {

 // Show TUI for no arguments, commander handles --help via configureHelp()
 if (args.length === 0) {
 requireTTY();
 renderTUI(updateCheck, isFirstRun);
 return;
 }
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/add/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { AddFlow } from '../../tui/screens/add/AddFlow';
import type { Command } from '@commander-js/extra-typings';
import { render } from 'ink';
Expand All@@ -21,6 +21,7 @@ export function registerAdd(program: Command): Command {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <AddFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/commands/create/command.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -10,6 +10,7 @@ import type {
import { LIFECYCLE_TIMEOUT_MAX, LIFECYCLE_TIMEOUT_MIN } from '../../../schema';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireTTY } from '../../tui/guards';
import { CreateScreen } from '../../tui/screens/create';
import { parseCommaSeparatedList } from '../shared/vpc-utils';
import { type ProgressCallback, createProject, createProjectWithAgent, getDryRunInfo } from './action';
Expand DownExpand Up@@ -245,6 +246,7 @@ export const registerCreate = (program: Command) => {
 options.language = options.language ?? 'Python';
 await handleCreateCLI(options as CreateOptions);
 } else {
 requireTTY();
 handleCreateTUI();
 }
 } catch (error) {
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/deploy/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { DeployScreen } from '../../tui/screens/deploy/DeployScreen';
import { handleDeploy } from './actions';
import type { DeployOptions } from './types';
Expand DownExpand Up@@ -160,8 +160,10 @@ export const registerDeploy = (program: Command) => {
 await handleDeployCLI(options as DeployOptions);
 } else if (cliOptions.diff) {
 // Diff-only: use TUI with diff mode
 requireTTY();
 handleDeployTUI({ diffMode: true });
 } else {
 requireTTY();
 handleDeployTUI();
 }
 } catch (error) {
Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/dev/command.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,7 +21,7 @@ import { OtelCollector, startOtelCollector } from '../../operations/dev/otel';
import { FatalError } from '../../tui/components';
import { LayoutProvider } from '../../tui/context';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { parseHeaderFlags } from '../shared/header-utils';
import { runBrowserMode } from './browser-mode';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -383,6 +383,7 @@ export const registerDev = (program: Command) => {

 // If --no-browser provided, launch terminal TUI mode
 if (!opts.browser) {
 requireTTY();
 // Enter alternate screen buffer for fullscreen mode
 process.stdout.write(ENTER_ALT_SCREEN);

Expand Down

3 changes: 2 additions & 1 deletion
src/cli/commands/invoke/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { InvokeScreen } from '../../tui/screens/invoke';
import { parseHeaderFlags } from '../shared/header-utils';
import { handleInvoke, loadInvokeConfig } from './action';
Expand DownExpand Up@@ -168,6 +168,7 @@ export const registerInvoke = (program: Command) => {
 });
 } else {
 // No CLI options - interactive TUI mode (headers still passed if provided)
 requireTTY();
 const { waitUntilExit, unmount } = render(
 <InvokeScreen
 isInteractive={true}
Expand Down

4 changes: 3 additions & 1 deletion
src/cli/commands/remove/command.tsx

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
import { ConfigIO } from '../../../lib';
import { getErrorMessage } from '../../errors';
import { COMMAND_DESCRIPTIONS } from '../../tui/copy';
import { requireProject } from '../../tui/guards';
import { requireProject, requireTTY } from '../../tui/guards';
import { RemoveAllScreen, RemoveFlow } from '../../tui/screens/remove';
import type { RemoveAllOptions, RemoveResult } from './types';
import { validateRemoveAllOptions } from './validate';
Expand DownExpand Up@@ -76,6 +76,7 @@ export const registerRemove = (program: Command): Command => {
 json: cliOptions.json,
 });
 } else {
 requireTTY();
 const { unmount } = render(
 <RemoveAllScreen
 isInteractive={false}
Expand DownExpand Up@@ -112,6 +113,7 @@ export const registerRemove = (program: Command): Command => {
 }

 requireProject();
 requireTTY();

 const { clear, unmount } = render(
 <RemoveFlow
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/AgentPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -35,6 +35,7 @@ import { executeImportAgent } from '../operations/agent/import';
import { setupPythonProject } from '../operations/python';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { createRenderer } from '../templates';
import { requireTTY } from '../tui/guards/tty';
import type { GenerateConfig, MemoryOption } from '../tui/screens/generate/types';
import { BasePrimitive } from './BasePrimitive';
import { CredentialPrimitive } from './CredentialPrimitive';
Expand DownExpand Up@@ -332,6 +333,7 @@ export class AgentPrimitive extends BasePrimitive<AddAgentOptions, RemovableReso
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/BasePrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,7 @@ import { ConfigIO, findConfigRoot } from '../../lib';
import type { AgentCoreProjectSpec } from '../../schema';
import type { ResourceType } from '../commands/remove/types';
import { getErrorMessage } from '../errors';
import { requireTTY } from '../tui/guards/tty';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource, RemovalPreview, RemovalResult } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -133,6 +134,7 @@ export abstract class BasePrimitive<
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/CredentialPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -4,6 +4,7 @@ import { CredentialSchema } from '../../schema';
import { validateAddCredentialOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { computeDefaultCredentialEnvVarName } from './credential-utils';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -339,6 +340,7 @@ export class CredentialPrimitive extends BasePrimitive<AddCredentialOptions, Rem
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/EvaluatorPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -4,6 +4,7 @@ import { EvaluationLevelSchema, EvaluatorSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { renderCodeBasedEvaluatorTemplate } from '../templates/EvaluatorRenderer';
import { requireTTY } from '../tui/guards/tty';
import {
 LEVEL_PLACEHOLDERS,
 RATING_SCALE_PRESETS,
Expand DownExpand Up@@ -316,6 +317,7 @@ export class EvaluatorPrimitive extends BasePrimitive<AddEvaluatorOptions, Remov
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,7 @@ import type { AddGatewayOptions as CLIAddGatewayOptions } from '../commands/add/
import { validateAddGatewayOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import type { AddGatewayConfig } from '../tui/screens/mcp/types';
import { BasePrimitive } from './BasePrimitive';
import { buildAuthorizerConfigFromJwtConfig, createManagedOAuthCredential } from './auth-utils';
Expand DownExpand Up@@ -271,6 +272,7 @@ export class GatewayPrimitive extends BasePrimitive<AddGatewayOptions, Removable
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/GatewayTargetPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -15,6 +15,7 @@ import { getErrorMessage } from '../errors';
import type { RemovableGatewayTarget } from '../operations/remove/remove-gateway-target';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { getTemplateToolDefinitions, renderGatewayTargetTemplate } from '../templates/GatewayTargetRenderer';
import { requireTTY } from '../tui/guards/tty';
import type {
 ApiGatewayTargetConfig,
 GatewayTargetWizardState,
Expand DownExpand Up@@ -508,6 +509,7 @@ export class GatewayTargetPrimitive extends BasePrimitive<AddGatewayTargetOption
 );
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/MemoryPrimitive.tsx

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Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ import {
import { DEFAULT_DELIVERY_TYPE, validateAddMemoryOptions } from '../commands/add/validate';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { DEFAULT_EVENT_EXPIRY } from '../tui/screens/memory/types';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -230,6 +231,7 @@ export class MemoryPrimitive extends BasePrimitive<AddMemoryOptions, RemovableMe
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback — dynamic imports to avoid pulling ink (async) into registry
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

2 changes: 2 additions & 0 deletions
src/cli/primitives/OnlineEvalConfigPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -3,6 +3,7 @@ import type { OnlineEvalConfig } from '../../schema';
import { OnlineEvalConfigSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
import type { Command } from '@commander-js/extra-typings';
Expand DownExpand Up@@ -171,6 +172,7 @@ export class OnlineEvalConfigPrimitive extends BasePrimitive<AddOnlineEvalConfig
 process.exit(result.success ? 0 : 1);
 } else {
 // TUI fallback
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
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3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyEnginePrimitive.ts

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Expand Up@@ -3,6 +3,7 @@ import type { AgentCoreProjectSpec, PolicyEngine } from '../../schema';
import { PolicyEngineModeSchema, PolicyEngineSchema } from '../../schema';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -261,6 +262,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -326,6 +328,7 @@ export class PolicyEnginePrimitive extends BasePrimitive<AddPolicyEngineOptions,
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
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3 changes: 3 additions & 0 deletions
src/cli/primitives/PolicyPrimitive.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@ import { detectRegion } from '../aws';
import { getPolicyGeneration, startPolicyGeneration } from '../aws/policy-generation';
import { getErrorMessage } from '../errors';
import type { RemovalPreview, RemovalResult, SchemaChange } from '../operations/remove/types';
import { requireTTY } from '../tui/guards/tty';
import { BasePrimitive } from './BasePrimitive';
import { SOURCE_CODE_NOTE } from './constants';
import type { AddResult, AddScreenComponent, RemovableResource } from './types';
Expand DownExpand Up@@ -343,6 +344,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { AddFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand DownExpand Up@@ -417,6 +419,7 @@ export class PolicyPrimitive extends BasePrimitive<AddPolicyOptions, RemovablePo
 }
 process.exit(result.success ? 0 : 1);
 } else {
 requireTTY();
 const [{ render }, { default: React }, { RemoveFlow }] = await Promise.all([
 import('ink'),
 import('react'),
Expand Down

1 change: 1 addition & 0 deletions
src/cli/tui/guards/index.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,3 +5,4 @@ export {
 MissingProjectMessage,
 WrongDirectoryMessage,
} from './project';
export { requireTTY } from './tty';

13 changes: 13 additions & 0 deletions
src/cli/tui/guards/tty.ts

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@@ -0,0 +1,13 @@
/**
 * Guard that checks for an interactive terminal and exits if not found.
 * Prevents TUI flows from hanging in CI, piped stdin, or agent automation.
 *
 * Checks both stdin (Ink reads keyboard input) and stdout (Ink renders TUI output).
 * Either being non-TTY means the TUI cannot function.
 */
export function requireTTY(): void {
 if (!process.stdin.isTTY || !process.stdout.isTTY) {
 console.error('Error: This command requires an interactive terminal. Use --help to see non-interactive flags.');
 process.exit(1);
 }
}
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