Implement JSONL RPC envelope for agent-orchestrator communication #688

Open
Open
Implement JSONL RPC envelope for agent-orchestrator communication#688
Labels
enhancementNew feature or request

Description

@AlexMikhalev
AlexMikhalev
opened on Mar 16, 2026

Context

ADF currently communicates with agents via unstructured stdout/stderr pipes. This causes:

  • SIGPIPE kills when stderr pipe is dropped
  • Fragile text parsing for cost/session/status extraction
  • No message framing, idempotency, or error typing

Proposal

Implement a JSONL envelope protocol inspired by Piwork's taskd RPC spec (docs/runtime-taskd-rpc-spec.md).

Envelope Format

Agent -> Orchestrator (event):

{"type": "event", "event": "cost_update", "agent": "security-sentinel", "ts": "...", "payload": {...}}

Orchestrator -> Agent (command, future):

{"id": "req_01", "type": "pause", "payload": {"reason": "budget_exceeded"}}

Key Properties

  • Strict envelope: {type, event/id, payload} (payload required even if empty)
  • Idempotency: duplicate request IDs with same payload produce no duplicate effects
  • Typed error codes with retryable flag
  • State recovery: runtime_get_state equivalent after reconnect

Integration

  • For Claude agents: wrap --output-format stream-json events in ADF envelope
  • For Codex agents: gracefully degrade to unstructured mode
  • New agents: require envelope support as spawn prerequisite

Benefits

References

Activity

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    Labels

    enhancementNew feature or request

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      , '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" + '

      Skip to content
      Implement JSONL RPC envelope for agent-orchestrator communication #688
      Open
      Open
      Implement JSONL RPC envelope for agent-orchestrator communication#688
      Labels
      enhancementNew feature or request
      Description
      @AlexMikhalev
      AlexMikhalev
      opened on Mar 16, 2026
      Context
      ADF currently communicates with agents via unstructured stdout/stderr pipes. This causes:
      • SIGPIPE kills when stderr pipe is dropped
      • Fragile text parsing for cost/session/status extraction
      • No message framing, idempotency, or error typing
      Proposal
      Implement a JSONL envelope protocol inspired by Piwork's taskd RPC spec (docs/runtime-taskd-rpc-spec.md).
      Envelope Format
      Agent -> Orchestrator (event):
      {"type": "event", "event": "cost_update", "agent": "security-sentinel", "ts": "...", "payload": {...}}
      Orchestrator -> Agent (command, future):
      {"id": "req_01", "type": "pause", "payload": {"reason": "budget_exceeded"}}
      Key Properties
      • Strict envelope: {type, event/id, payload} (payload required even if empty)
      • Idempotency: duplicate request IDs with same payload produce no duplicate effects
      • Typed error codes with retryable flag
      • State recovery: runtime_get_state equivalent after reconnect
      Integration
      • For Claude agents: wrap --output-format stream-json events in ADF envelope
      • For Codex agents: gracefully degrade to unstructured mode
      • New agents: require envelope support as spawn prerequisite
      Benefits
      References
      Activity
      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        enhancementNew feature or request
        Type
        No type
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, '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('^' + ".*" + '

          Skip to content
          Implement JSONL RPC envelope for agent-orchestrator communication #688
          Open
          Open
          Implement JSONL RPC envelope for agent-orchestrator communication#688
          Labels
          enhancementNew feature or request
          Description
          @AlexMikhalev
          AlexMikhalev
          opened on Mar 16, 2026
          Context
          ADF currently communicates with agents via unstructured stdout/stderr pipes. This causes:
          • SIGPIPE kills when stderr pipe is dropped
          • Fragile text parsing for cost/session/status extraction
          • No message framing, idempotency, or error typing
          Proposal
          Implement a JSONL envelope protocol inspired by Piwork's taskd RPC spec (docs/runtime-taskd-rpc-spec.md).
          Envelope Format
          Agent -> Orchestrator (event):
          {"type": "event", "event": "cost_update", "agent": "security-sentinel", "ts": "...", "payload": {...}}
          Orchestrator -> Agent (command, future):
          {"id": "req_01", "type": "pause", "payload": {"reason": "budget_exceeded"}}
          Key Properties
          • Strict envelope: {type, event/id, payload} (payload required even if empty)
          • Idempotency: duplicate request IDs with same payload produce no duplicate effects
          • Typed error codes with retryable flag
          • State recovery: runtime_get_state equivalent after reconnect
          Integration
          • For Claude agents: wrap --output-format stream-json events in ADF envelope
          • For Codex agents: gracefully degrade to unstructured mode
          • New agents: require envelope support as spawn prerequisite
          Benefits
          References
          Activity
          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            enhancementNew feature or request
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, '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('^' + ".*" + '

              Skip to content
              Implement JSONL RPC envelope for agent-orchestrator communication #688
              Open
              Open
              Implement JSONL RPC envelope for agent-orchestrator communication#688
              Labels
              enhancementNew feature or request
              Description
              @AlexMikhalev
              AlexMikhalev
              opened on Mar 16, 2026
              Context
              ADF currently communicates with agents via unstructured stdout/stderr pipes. This causes:
              • SIGPIPE kills when stderr pipe is dropped
              • Fragile text parsing for cost/session/status extraction
              • No message framing, idempotency, or error typing
              Proposal
              Implement a JSONL envelope protocol inspired by Piwork's taskd RPC spec (docs/runtime-taskd-rpc-spec.md).
              Envelope Format
              Agent -> Orchestrator (event):
              {"type": "event", "event": "cost_update", "agent": "security-sentinel", "ts": "...", "payload": {...}}
              Orchestrator -> Agent (command, future):
              {"id": "req_01", "type": "pause", "payload": {"reason": "budget_exceeded"}}
              Key Properties
              • Strict envelope: {type, event/id, payload} (payload required even if empty)
              • Idempotency: duplicate request IDs with same payload produce no duplicate effects
              • Typed error codes with retryable flag
              • State recovery: runtime_get_state equivalent after reconnect
              Integration
              • For Claude agents: wrap --output-format stream-json events in ADF envelope
              • For Codex agents: gracefully degrade to unstructured mode
              • New agents: require envelope support as spawn prerequisite
              Benefits
              References
              Activity
              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                enhancementNew feature or request
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, '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
                  Implement JSONL RPC envelope for agent-orchestrator communication #688
                  Open
                  Open
                  Implement JSONL RPC envelope for agent-orchestrator communication#688
                  Labels
                  enhancementNew feature or request
                  Description
                  @AlexMikhalev
                  AlexMikhalev
                  opened on Mar 16, 2026
                  Context
                  ADF currently communicates with agents via unstructured stdout/stderr pipes. This causes:
                  • SIGPIPE kills when stderr pipe is dropped
                  • Fragile text parsing for cost/session/status extraction
                  • No message framing, idempotency, or error typing
                  Proposal
                  Implement a JSONL envelope protocol inspired by Piwork's taskd RPC spec (docs/runtime-taskd-rpc-spec.md).
                  Envelope Format
                  Agent -> Orchestrator (event):
                  {"type": "event", "event": "cost_update", "agent": "security-sentinel", "ts": "...", "payload": {...}}
                  Orchestrator -> Agent (command, future):
                  {"id": "req_01", "type": "pause", "payload": {"reason": "budget_exceeded"}}
                  Key Properties
                  • Strict envelope: {type, event/id, payload} (payload required even if empty)
                  • Idempotency: duplicate request IDs with same payload produce no duplicate effects
                  • Typed error codes with retryable flag
                  • State recovery: runtime_get_state equivalent after reconnect
                  Integration
                  • For Claude agents: wrap --output-format stream-json events in ADF envelope
                  • For Codex agents: gracefully degrade to unstructured mode
                  • New agents: require envelope support as spawn prerequisite
                  Benefits
                  References
                  Activity
                  Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    enhancementNew feature or request
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, '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
                      Implement JSONL RPC envelope for agent-orchestrator communication #688
                      Open
                      Open
                      Implement JSONL RPC envelope for agent-orchestrator communication#688
                      Labels
                      enhancementNew feature or request
                      Description
                      @AlexMikhalev
                      AlexMikhalev
                      opened on Mar 16, 2026
                      Context
                      ADF currently communicates with agents via unstructured stdout/stderr pipes. This causes:
                      • SIGPIPE kills when stderr pipe is dropped
                      • Fragile text parsing for cost/session/status extraction
                      • No message framing, idempotency, or error typing
                      Proposal
                      Implement a JSONL envelope protocol inspired by Piwork's taskd RPC spec (docs/runtime-taskd-rpc-spec.md).
                      Envelope Format
                      Agent -> Orchestrator (event):
                      {"type": "event", "event": "cost_update", "agent": "security-sentinel", "ts": "...", "payload": {...}}
                      Orchestrator -> Agent (command, future):
                      {"id": "req_01", "type": "pause", "payload": {"reason": "budget_exceeded"}}
                      Key Properties
                      • Strict envelope: {type, event/id, payload} (payload required even if empty)
                      • Idempotency: duplicate request IDs with same payload produce no duplicate effects
                      • Typed error codes with retryable flag
                      • State recovery: runtime_get_state equivalent after reconnect
                      Integration
                      • For Claude agents: wrap --output-format stream-json events in ADF envelope
                      • For Codex agents: gracefully degrade to unstructured mode
                      • New agents: require envelope support as spawn prerequisite
                      Benefits
                      References
                      Activity
                      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        enhancementNew feature or request
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, '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('^' + ".*" + '

                          Skip to content
                          Implement JSONL RPC envelope for agent-orchestrator communication #688
                          Open
                          Open
                          Implement JSONL RPC envelope for agent-orchestrator communication#688
                          Labels
                          enhancementNew feature or request
                          Description
                          @AlexMikhalev
                          AlexMikhalev
                          opened on Mar 16, 2026
                          Context
                          ADF currently communicates with agents via unstructured stdout/stderr pipes. This causes:
                          • SIGPIPE kills when stderr pipe is dropped
                          • Fragile text parsing for cost/session/status extraction
                          • No message framing, idempotency, or error typing
                          Proposal
                          Implement a JSONL envelope protocol inspired by Piwork's taskd RPC spec (docs/runtime-taskd-rpc-spec.md).
                          Envelope Format
                          Agent -> Orchestrator (event):
                          {"type": "event", "event": "cost_update", "agent": "security-sentinel", "ts": "...", "payload": {...}}
                          Orchestrator -> Agent (command, future):
                          {"id": "req_01", "type": "pause", "payload": {"reason": "budget_exceeded"}}
                          Key Properties
                          • Strict envelope: {type, event/id, payload} (payload required even if empty)
                          • Idempotency: duplicate request IDs with same payload produce no duplicate effects
                          • Typed error codes with retryable flag
                          • State recovery: runtime_get_state equivalent after reconnect
                          Integration
                          • For Claude agents: wrap --output-format stream-json events in ADF envelope
                          • For Codex agents: gracefully degrade to unstructured mode
                          • New agents: require envelope support as spawn prerequisite
                          Benefits
                          References
                          Activity
                          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            enhancementNew feature or request
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, '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); }
})();
})();

                              Skip to content
                              Implement JSONL RPC envelope for agent-orchestrator communication #688
                              Open
                              Open
                              Implement JSONL RPC envelope for agent-orchestrator communication#688
                              Labels
                              enhancementNew feature or request
                              Description
                              @AlexMikhalev
                              AlexMikhalev
                              opened on Mar 16, 2026
                              Context
                              ADF currently communicates with agents via unstructured stdout/stderr pipes. This causes:
                              • SIGPIPE kills when stderr pipe is dropped
                              • Fragile text parsing for cost/session/status extraction
                              • No message framing, idempotency, or error typing
                              Proposal
                              Implement a JSONL envelope protocol inspired by Piwork's taskd RPC spec (docs/runtime-taskd-rpc-spec.md).
                              Envelope Format
                              Agent -> Orchestrator (event):
                              {"type": "event", "event": "cost_update", "agent": "security-sentinel", "ts": "...", "payload": {...}}
                              Orchestrator -> Agent (command, future):
                              {"id": "req_01", "type": "pause", "payload": {"reason": "budget_exceeded"}}
                              Key Properties
                              • Strict envelope: {type, event/id, payload} (payload required even if empty)
                              • Idempotency: duplicate request IDs with same payload produce no duplicate effects
                              • Typed error codes with retryable flag
                              • State recovery: runtime_get_state equivalent after reconnect
                              Integration
                              • For Claude agents: wrap --output-format stream-json events in ADF envelope
                              • For Codex agents: gracefully degrade to unstructured mode
                              • New agents: require envelope support as spawn prerequisite
                              Benefits
                              References
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