feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled#21603

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andreiborza merged 5 commits into from
Jun 17, 2026
Merged

feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled #21603

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f15a1f7
feat(core): Disable gen_ai message truncation by default when `stream…
andreiborza Jun 17, 2026
3df1b22
Fix integration tests
andreiborza Jun 17, 2026
f9af3df
Update packages/core/src/tracing/ai/utils.ts
andreiborza Jun 17, 2026
6e648eb
Remove changelog entry, clarify comment
andreiborza Jun 17, 2026
289b621
Merge branch 'develop' into ab/stream-genai-spans-disable-truncationa
andreiborza Jun 17, 2026
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19 changes: 19 additions & 0 deletions dev-packages/node-integration-tests/suites/tracing/anthropic/instrument-with-truncation.mjs
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@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
dsn: 'https://public@dsn.ingest.sentry.io/1337',
release: '1.0',
tracesSampleRate: 1.0,
dataCollection: { genAI: { inputs: true, outputs: true } },
transport: loggingTransport,
integrations: [Sentry.anthropicAIIntegration({ enableTruncation: true })],
beforeSendTransaction: event => {
// Filter out mock express server transactions
if (event.transaction.includes('/anthropic/v1/')) {
return null;
}
return event;
},
streamGenAiSpans: true,
});
2 changes: 1 addition & 1 deletion dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-media-truncation.mjs
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Expand Up@@ -46,7 +46,7 @@ async function run() {
apiKey: 'mock-api-key',
});

const client = instrumentAnthropicAiClient(mockClient);
const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

// Send the image showing the number 3
// Put the image in the last message so it doesn't get dropped
Expand Down
2 changes: 1 addition & 1 deletion dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-message-truncation.mjs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
apiKey: 'mock-api-key',
});

const client = instrumentAnthropicAiClient(mockClient);
const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

// Test 1: Given an array of messages only the last message should be kept
// The last message should be truncated to fit within the 20KB limit
Expand Down
91 changes: 48 additions & 43 deletions dev-packages/node-integration-tests/suites/tracing/anthropic/test.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -606,7 +606,7 @@ describe('Anthropic integration', () => {
createEsmAndCjsTests(
__dirname,
'scenario-message-truncation.mjs',
'instrument-with-pii.mjs',
'instrument-with-truncation.mjs',
(createRunner, test) => {
test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
await createRunner()
Expand DownExpand Up@@ -659,51 +659,56 @@ describe('Anthropic integration', () => {
},
);

createEsmAndCjsTests(__dirname, 'scenario-media-truncation.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
test('truncates media attachment, keeping all other details', async () => {
const expectedMediaMessages = JSON.stringify([
{
role: 'user',
content: [
{
type: 'image',
source: {
type: 'base64',
media_type: 'image/png',
data: '[Blob substitute]',
createEsmAndCjsTests(
__dirname,
'scenario-media-truncation.mjs',
'instrument-with-truncation.mjs',
(createRunner, test) => {
test('truncates media attachment, keeping all other details', async () => {
const expectedMediaMessages = JSON.stringify([
{
role: 'user',
content: [
{
type: 'image',
source: {
type: 'base64',
media_type: 'image/png',
data: '[Blob substitute]',
},
},
},
],
},
]);
await createRunner()
.ignore('event')
.expect({
transaction: {
transaction: 'main',
],
},
})
.expect({
span: container => {
expect(container.items).toHaveLength(1);
const [firstSpan] = container.items;
]);
await createRunner()
.ignore('event')
.expect({
transaction: {
transaction: 'main',
},
})
.expect({
span: container => {
expect(container.items).toHaveLength(1);
const [firstSpan] = container.items;

// [0] messages.create with media attachment — image data replaced, other fields preserved
expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
expect(firstSpan!.status).toBe('ok');
expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
},
})
.start()
.completed();
});
});
// [0] messages.create with media attachment — image data replaced, other fields preserved
expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
expect(firstSpan!.status).toBe('ok');
expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
},
})
.start()
.completed();
});
},
);

createEsmAndCjsTests(
__dirname,
Expand Down
19 changes: 19 additions & 0 deletions ...ackages/node-integration-tests/suites/tracing/google-genai/instrument-with-truncation.mjs
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@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
dsn: 'https://public@dsn.ingest.sentry.io/1337',
release: '1.0',
tracesSampleRate: 1.0,
dataCollection: { genAI: { inputs: true, outputs: true } },
transport: loggingTransport,
integrations: [Sentry.googleGenAIIntegration({ enableTruncation: true })],
beforeSendTransaction: event => {
// Filter out mock express server transactions
if (event.transaction.includes('/v1beta/')) {
return null;
}
return event;
},
streamGenAiSpans: true,
});
2 changes: 1 addition & 1 deletion ...ckages/node-integration-tests/suites/tracing/google-genai/scenario-message-truncation.mjs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,7 +41,7 @@ async function run() {
apiKey: 'mock-api-key',
});

const client = instrumentGoogleGenAIClient(mockClient);
const client = instrumentGoogleGenAIClient(mockClient, { enableTruncation: true, recordInputs: true });

// Test 1: Given an array of messages only the last message should be kept
// The last message should be truncated to fit within the 20KB limit
Expand Down
2 changes: 1 addition & 1 deletion dev-packages/node-integration-tests/suites/tracing/google-genai/test.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -347,7 +347,7 @@ describe('Google GenAI integration', () => {
createEsmAndCjsTests(
__dirname,
'scenario-message-truncation.mjs',
'instrument-with-pii.mjs',
'instrument-with-truncation.mjs',
(createRunner, test) => {
test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
await createRunner()
Expand Down
19 changes: 19 additions & 0 deletions dev-packages/node-integration-tests/suites/tracing/langchain/instrument-with-truncation.mjs
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@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
dsn: 'https://public@dsn.ingest.sentry.io/1337',
release: '1.0',
tracesSampleRate: 1.0,
dataCollection: { genAI: { inputs: true, outputs: true } },
transport: loggingTransport,
integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
beforeSendTransaction: event => {
// Filter out mock express server transactions
if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/embeddings')) {
return null;
}
return event;
},
streamGenAiSpans: true,
});
2 changes: 1 addition & 1 deletion dev-packages/node-integration-tests/suites/tracing/langchain/test.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -199,7 +199,7 @@ describe('LangChain integration', () => {
createEsmAndCjsTests(
__dirname,
'scenario-message-truncation.mjs',
'instrument-with-pii.mjs',
'instrument-with-truncation.mjs',
(createRunner, test) => {
test('truncates messages when they exceed byte limit', async () => {
await createRunner()
Expand Down
19 changes: 19 additions & 0 deletions ...ackages/node-integration-tests/suites/tracing/langchain/v1/instrument-with-truncation.mjs
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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
dsn: 'https://public@dsn.ingest.sentry.io/1337',
release: '1.0',
tracesSampleRate: 1.0,
dataCollection: { genAI: { inputs: true, outputs: true } },
transport: loggingTransport,
integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
beforeSendTransaction: event => {
// Filter out mock express server transactions
if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/chat/completions')) {
return null;
}
return event;
},
streamGenAiSpans: true,
});
2 changes: 1 addition & 1 deletion dev-packages/node-integration-tests/suites/tracing/langchain/v1/test.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -216,7 +216,7 @@ conditionalTest({ min: 20 })('LangChain integration (v1)', () => {
createEsmAndCjsTests(
__dirname,
'scenario-message-truncation.mjs',
'instrument-with-pii.mjs',
'instrument-with-truncation.mjs',
(createRunner, test) => {
test('truncates messages when they exceed byte limit', async () => {
await createRunner()
Expand Down
18 changes: 18 additions & 0 deletions dev-packages/node-integration-tests/suites/tracing/openai/instrument-with-truncation.mjs
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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
dsn: 'https://public@dsn.ingest.sentry.io/1337',
release: '1.0',
tracesSampleRate: 1.0,
dataCollection: { genAI: { inputs: true, outputs: true } },
transport: loggingTransport,
integrations: [Sentry.openAIIntegration({ enableTruncation: true })],
beforeSendTransaction: event => {
if (event.transaction.includes('/openai/')) {
return null;
}
return event;
},
streamGenAiSpans: true,
});
6 changes: 3 additions & 3 deletions dev-packages/node-integration-tests/suites/tracing/openai/test.ts
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Expand Up@@ -1174,7 +1174,7 @@ describe('OpenAI integration', () => {
createEsmAndCjsTests(
__dirname,
'truncation/scenario-message-truncation-completions.mjs',
'instrument-with-pii.mjs',
'instrument-with-truncation.mjs',
(createRunner, test) => {
test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
await createRunner()
Expand DownExpand Up@@ -1278,7 +1278,7 @@ describe('OpenAI integration', () => {
createEsmAndCjsTests(
__dirname,
'truncation/scenario-message-truncation-responses.mjs',
'instrument-with-pii.mjs',
'instrument-with-truncation.mjs',
(createRunner, test) => {
test('truncates string inputs when they exceed byte limit', async () => {
await createRunner()
Expand DownExpand Up@@ -1603,7 +1603,7 @@ describe('OpenAI integration', () => {
});
});

createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-truncation.mjs', (createRunner, test) => {
test('redacts inline base64 image data in vision requests', async () => {
await createRunner()
.ignore('event')
Expand Down
2 changes: 1 addition & 1 deletion ...ration-tests/suites/tracing/openai/truncation/scenario-message-truncation-completions.mjs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -45,7 +45,7 @@ async function run() {
apiKey: 'mock-api-key',
});

const client = instrumentOpenAiClient(mockClient);
const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

// Test 1: Given an array of messages only the last message should be kept
// The last message should be truncated to fit within the 20KB limit
Expand Down
2 changes: 1 addition & 1 deletion ...egration-tests/suites/tracing/openai/truncation/scenario-message-truncation-responses.mjs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -77,7 +77,7 @@ async function run() {
apiKey: 'mock-api-key',
});

const client = instrumentOpenAiClient(mockClient);
const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

// Create 1 large message that gets truncated to fit within the 20KB limit
const largeContent = 'A'.repeat(25000) + 'B'.repeat(25000); // ~50KB gets truncated to include only As
Expand Down
12 changes: 12 additions & 0 deletions dev-packages/node-integration-tests/suites/tracing/vercelai/instrument-with-truncation.mjs
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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
dsn: 'https://public@dsn.ingest.sentry.io/1337',
release: '1.0',
tracesSampleRate: 1.0,
dataCollection: { genAI: { inputs: true, outputs: true } },
transport: loggingTransport,
integrations: [Sentry.vercelAIIntegration({ enableTruncation: true })],
streamGenAiSpans: true,
});
2 changes: 1 addition & 1 deletion dev-packages/node-integration-tests/suites/tracing/vercelai/test.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -446,7 +446,7 @@ describe('Vercel AI integration', () => {
createEsmAndCjsTests(
__dirname,
'scenario-message-truncation.mjs',
'instrument-with-pii.mjs',
'instrument-with-truncation.mjs',
(createRunner, test) => {
test('truncates messages when they exceed byte limit', async () => {
await createRunner()
Expand Down
15 changes: 13 additions & 2 deletions packages/core/src/tracing/ai/utils.ts
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Expand Up@@ -60,11 +60,22 @@ export function resolveAIRecordingOptions<T extends AIRecordingOptions>(options?
/**
* Resolves whether truncation should be enabled.
* If the user explicitly set `enableTruncation`, that value is used.
* Otherwise, truncation is disabled when span streaming is active.
* Otherwise, truncation is disabled whenever gen_ai spans are sent through the span streaming / v2
* span path, i.e. full span streaming (`traceLifecycle: 'stream'`) or `streamGenAiSpans`. That path
* is not subject to the transaction payload-size limits that truncation works around, so the full
* message data can be retained.
*/
export function shouldEnableTruncation(enableTruncation: boolean | undefined): boolean {
if (enableTruncation !== undefined) {
return enableTruncation;
}

const client = getClient();
return enableTruncation ?? !(client && hasSpanStreamingEnabled(client));
if (!client) {
return true;
}

return !hasSpanStreamingEnabled(client) && !client.getOptions().streamGenAiSpans;
}

/**
Expand Down
5 changes: 5 additions & 0 deletions packages/core/src/types/options.ts
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Expand Up@@ -569,6 +569,11 @@ export interface ClientOptions<TO extends BaseTransportOptions = BaseTransportOp
*
* This enables streaming gen_ai spans, avoiding payload size limits of usual transactions.
*
* Because the v2 span format is not subject to the transaction payload-size limits that gen_ai message
* truncation exists to work around, enabling this option also disables gen_ai input truncation (and the
* inline-media redaction that rides along with it) by default. Set `enableTruncation: true` on the
* respective AI integration to opt back into truncation.
*
* @default false
*/
streamGenAiSpans?: boolean;
Expand Down
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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" + '

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feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled#21603

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 Merged

andreiborza
merged 5 commits into

from

Jun 17, 2026
 Merged


feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled
#21603
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f15a1f7

feat(core): Disable gen_ai message truncation by default when `stream…


andreiborza Jun 17, 2026
3df1b22

Fix integration tests


andreiborza Jun 17, 2026
f9af3df

Update packages/core/src/tracing/ai/utils.ts


andreiborza Jun 17, 2026
6e648eb

Remove changelog entry, clarify comment


andreiborza Jun 17, 2026
289b621

Merge branch 'develop' into ab/stream-genai-spans-disable-truncationa


andreiborza Jun 17, 2026

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19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/instrument-with-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.anthropicAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/anthropic/v1/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-media-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Send the image showing the number 3
 // Put the image in the last message so it doesn't get dropped
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-message-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

91 changes: 48 additions & 43 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -606,7 +606,7 @@ describe('Anthropic integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -659,51 +659,56 @@ describe('Anthropic integration', () => {
 },
 );

 createEsmAndCjsTests(__dirname, 'scenario-media-truncation.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 createEsmAndCjsTests(
 __dirname,
 'scenario-media-truncation.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 },
 },
 },
 ],
 },
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 ],
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;

 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 });
 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 },
 );

 createEsmAndCjsTests(
 __dirname,
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/google-genai/instrument-with-truncation.mjs

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@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.googleGenAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1beta/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
...ckages/node-integration-tests/suites/tracing/google-genai/scenario-message-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,7 +41,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentGoogleGenAIClient(mockClient);
 const client = instrumentGoogleGenAIClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/google-genai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -347,7 +347,7 @@ describe('Google GenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/langchain/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/embeddings')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -199,7 +199,7 @@ describe('LangChain integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/langchain/v1/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/chat/completions')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/v1/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -216,7 +216,7 @@ conditionalTest({ min: 20 })('LangChain integration (v1)', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

18 changes: 18 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/openai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.openAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 if (event.transaction.includes('/openai/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

6 changes: 3 additions & 3 deletions
dev-packages/node-integration-tests/suites/tracing/openai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -1174,7 +1174,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-completions.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -1278,7 +1278,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-responses.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates string inputs when they exceed byte limit', async () => {
 await createRunner()
Expand DownExpand Up@@ -1603,7 +1603,7 @@ describe('OpenAI integration', () => {
 });
 });

 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-truncation.mjs', (createRunner, test) => {
 test('redacts inline base64 image data in vision requests', async () => {
 await createRunner()
 .ignore('event')
Expand Down

2 changes: 1 addition & 1 deletion
...ration-tests/suites/tracing/openai/truncation/scenario-message-truncation-completions.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -45,7 +45,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
...egration-tests/suites/tracing/openai/truncation/scenario-message-truncation-responses.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -77,7 +77,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Create 1 large message that gets truncated to fit within the 20KB limit
 const largeContent = 'A'.repeat(25000) + 'B'.repeat(25000); // ~50KB gets truncated to include only As
Expand Down

12 changes: 12 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/vercelai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.vercelAIIntegration({ enableTruncation: true })],
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/vercelai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -446,7 +446,7 @@ describe('Vercel AI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

15 changes: 13 additions & 2 deletions
packages/core/src/tracing/ai/utils.ts

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Expand Up@@ -60,11 +60,22 @@ export function resolveAIRecordingOptions<T extends AIRecordingOptions>(options?
/**
 * Resolves whether truncation should be enabled.
 * If the user explicitly set `enableTruncation`, that value is used.
 * Otherwise, truncation is disabled when span streaming is active.
 * Otherwise, truncation is disabled whenever gen_ai spans are sent through the span streaming / v2
 * span path, i.e. full span streaming (`traceLifecycle: 'stream'`) or `streamGenAiSpans`. That path
 * is not subject to the transaction payload-size limits that truncation works around, so the full
 * message data can be retained.
 */
export function shouldEnableTruncation(enableTruncation: boolean | undefined): boolean {
 if (enableTruncation !== undefined) {
 return enableTruncation;
 }

 const client = getClient();
 return enableTruncation ?? !(client && hasSpanStreamingEnabled(client));
 if (!client) {
 return true;
 }

 return !hasSpanStreamingEnabled(client) && !client.getOptions().streamGenAiSpans;
}

/**
Expand Down

5 changes: 5 additions & 0 deletions
packages/core/src/types/options.ts

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Expand Up@@ -569,6 +569,11 @@ export interface ClientOptions<TO extends BaseTransportOptions = BaseTransportOp
 *
 * This enables streaming gen_ai spans, avoiding payload size limits of usual transactions.
 *
 * Because the v2 span format is not subject to the transaction payload-size limits that gen_ai message
 * truncation exists to work around, enabling this option also disables gen_ai input truncation (and the
 * inline-media redaction that rides along with it) by default. Set `enableTruncation: true` on the
 * respective AI integration to opt back into truncation.
 *
 * @default false
 */
 streamGenAiSpans?: boolean;
Expand Down
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, '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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feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled#21603

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 Merged

andreiborza
merged 5 commits into

from

Jun 17, 2026
 Merged


feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled
#21603
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f15a1f7

feat(core): Disable gen_ai message truncation by default when `stream…


andreiborza Jun 17, 2026
3df1b22

Fix integration tests


andreiborza Jun 17, 2026
f9af3df

Update packages/core/src/tracing/ai/utils.ts


andreiborza Jun 17, 2026
6e648eb

Remove changelog entry, clarify comment


andreiborza Jun 17, 2026
289b621

Merge branch 'develop' into ab/stream-genai-spans-disable-truncationa


andreiborza Jun 17, 2026

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19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.anthropicAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/anthropic/v1/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-media-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Send the image showing the number 3
 // Put the image in the last message so it doesn't get dropped
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-message-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

91 changes: 48 additions & 43 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -606,7 +606,7 @@ describe('Anthropic integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -659,51 +659,56 @@ describe('Anthropic integration', () => {
 },
 );

 createEsmAndCjsTests(__dirname, 'scenario-media-truncation.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 createEsmAndCjsTests(
 __dirname,
 'scenario-media-truncation.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 },
 },
 },
 ],
 },
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 ],
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;

 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 });
 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 },
 );

 createEsmAndCjsTests(
 __dirname,
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/google-genai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.googleGenAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1beta/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
...ckages/node-integration-tests/suites/tracing/google-genai/scenario-message-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -41,7 +41,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentGoogleGenAIClient(mockClient);
 const client = instrumentGoogleGenAIClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/google-genai/test.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -347,7 +347,7 @@ describe('Google GenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/langchain/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/embeddings')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -199,7 +199,7 @@ describe('LangChain integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/langchain/v1/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/chat/completions')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/v1/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -216,7 +216,7 @@ conditionalTest({ min: 20 })('LangChain integration (v1)', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

18 changes: 18 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/openai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.openAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 if (event.transaction.includes('/openai/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

6 changes: 3 additions & 3 deletions
dev-packages/node-integration-tests/suites/tracing/openai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -1174,7 +1174,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-completions.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -1278,7 +1278,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-responses.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates string inputs when they exceed byte limit', async () => {
 await createRunner()
Expand DownExpand Up@@ -1603,7 +1603,7 @@ describe('OpenAI integration', () => {
 });
 });

 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-truncation.mjs', (createRunner, test) => {
 test('redacts inline base64 image data in vision requests', async () => {
 await createRunner()
 .ignore('event')
Expand Down

2 changes: 1 addition & 1 deletion
...ration-tests/suites/tracing/openai/truncation/scenario-message-truncation-completions.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -45,7 +45,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
...egration-tests/suites/tracing/openai/truncation/scenario-message-truncation-responses.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -77,7 +77,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Create 1 large message that gets truncated to fit within the 20KB limit
 const largeContent = 'A'.repeat(25000) + 'B'.repeat(25000); // ~50KB gets truncated to include only As
Expand Down

12 changes: 12 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/vercelai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.vercelAIIntegration({ enableTruncation: true })],
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/vercelai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -446,7 +446,7 @@ describe('Vercel AI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

15 changes: 13 additions & 2 deletions
packages/core/src/tracing/ai/utils.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -60,11 +60,22 @@ export function resolveAIRecordingOptions<T extends AIRecordingOptions>(options?
/**
 * Resolves whether truncation should be enabled.
 * If the user explicitly set `enableTruncation`, that value is used.
 * Otherwise, truncation is disabled when span streaming is active.
 * Otherwise, truncation is disabled whenever gen_ai spans are sent through the span streaming / v2
 * span path, i.e. full span streaming (`traceLifecycle: 'stream'`) or `streamGenAiSpans`. That path
 * is not subject to the transaction payload-size limits that truncation works around, so the full
 * message data can be retained.
 */
export function shouldEnableTruncation(enableTruncation: boolean | undefined): boolean {
 if (enableTruncation !== undefined) {
 return enableTruncation;
 }

 const client = getClient();
 return enableTruncation ?? !(client && hasSpanStreamingEnabled(client));
 if (!client) {
 return true;
 }

 return !hasSpanStreamingEnabled(client) && !client.getOptions().streamGenAiSpans;
}

/**
Expand Down

5 changes: 5 additions & 0 deletions
packages/core/src/types/options.ts

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Expand Up@@ -569,6 +569,11 @@ export interface ClientOptions<TO extends BaseTransportOptions = BaseTransportOp
 *
 * This enables streaming gen_ai spans, avoiding payload size limits of usual transactions.
 *
 * Because the v2 span format is not subject to the transaction payload-size limits that gen_ai message
 * truncation exists to work around, enabling this option also disables gen_ai input truncation (and the
 * inline-media redaction that rides along with it) by default. Set `enableTruncation: true` on the
 * respective AI integration to opt back into truncation.
 *
 * @default false
 */
 streamGenAiSpans?: boolean;
Expand Down
Loading
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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feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled#21603

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 Merged

andreiborza
merged 5 commits into

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Jun 17, 2026
 Merged


feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled
#21603
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f15a1f7

feat(core): Disable gen_ai message truncation by default when `stream…


andreiborza Jun 17, 2026
3df1b22

Fix integration tests


andreiborza Jun 17, 2026
f9af3df

Update packages/core/src/tracing/ai/utils.ts


andreiborza Jun 17, 2026
6e648eb

Remove changelog entry, clarify comment


andreiborza Jun 17, 2026
289b621

Merge branch 'develop' into ab/stream-genai-spans-disable-truncationa


andreiborza Jun 17, 2026

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19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.anthropicAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/anthropic/v1/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-media-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Send the image showing the number 3
 // Put the image in the last message so it doesn't get dropped
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-message-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

91 changes: 48 additions & 43 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -606,7 +606,7 @@ describe('Anthropic integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -659,51 +659,56 @@ describe('Anthropic integration', () => {
 },
 );

 createEsmAndCjsTests(__dirname, 'scenario-media-truncation.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 createEsmAndCjsTests(
 __dirname,
 'scenario-media-truncation.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 },
 },
 },
 ],
 },
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 ],
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;

 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 });
 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 },
 );

 createEsmAndCjsTests(
 __dirname,
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/google-genai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.googleGenAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1beta/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
...ckages/node-integration-tests/suites/tracing/google-genai/scenario-message-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,7 +41,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentGoogleGenAIClient(mockClient);
 const client = instrumentGoogleGenAIClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/google-genai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -347,7 +347,7 @@ describe('Google GenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/langchain/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/embeddings')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -199,7 +199,7 @@ describe('LangChain integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/langchain/v1/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/chat/completions')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/v1/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -216,7 +216,7 @@ conditionalTest({ min: 20 })('LangChain integration (v1)', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

18 changes: 18 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/openai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.openAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 if (event.transaction.includes('/openai/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

6 changes: 3 additions & 3 deletions
dev-packages/node-integration-tests/suites/tracing/openai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -1174,7 +1174,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-completions.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -1278,7 +1278,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-responses.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates string inputs when they exceed byte limit', async () => {
 await createRunner()
Expand DownExpand Up@@ -1603,7 +1603,7 @@ describe('OpenAI integration', () => {
 });
 });

 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-truncation.mjs', (createRunner, test) => {
 test('redacts inline base64 image data in vision requests', async () => {
 await createRunner()
 .ignore('event')
Expand Down

2 changes: 1 addition & 1 deletion
...ration-tests/suites/tracing/openai/truncation/scenario-message-truncation-completions.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -45,7 +45,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
...egration-tests/suites/tracing/openai/truncation/scenario-message-truncation-responses.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -77,7 +77,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Create 1 large message that gets truncated to fit within the 20KB limit
 const largeContent = 'A'.repeat(25000) + 'B'.repeat(25000); // ~50KB gets truncated to include only As
Expand Down

12 changes: 12 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/vercelai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.vercelAIIntegration({ enableTruncation: true })],
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/vercelai/test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -446,7 +446,7 @@ describe('Vercel AI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

15 changes: 13 additions & 2 deletions
packages/core/src/tracing/ai/utils.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -60,11 +60,22 @@ export function resolveAIRecordingOptions<T extends AIRecordingOptions>(options?
/**
 * Resolves whether truncation should be enabled.
 * If the user explicitly set `enableTruncation`, that value is used.
 * Otherwise, truncation is disabled when span streaming is active.
 * Otherwise, truncation is disabled whenever gen_ai spans are sent through the span streaming / v2
 * span path, i.e. full span streaming (`traceLifecycle: 'stream'`) or `streamGenAiSpans`. That path
 * is not subject to the transaction payload-size limits that truncation works around, so the full
 * message data can be retained.
 */
export function shouldEnableTruncation(enableTruncation: boolean | undefined): boolean {
 if (enableTruncation !== undefined) {
 return enableTruncation;
 }

 const client = getClient();
 return enableTruncation ?? !(client && hasSpanStreamingEnabled(client));
 if (!client) {
 return true;
 }

 return !hasSpanStreamingEnabled(client) && !client.getOptions().streamGenAiSpans;
}

/**
Expand Down

5 changes: 5 additions & 0 deletions
packages/core/src/types/options.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -569,6 +569,11 @@ export interface ClientOptions<TO extends BaseTransportOptions = BaseTransportOp
 *
 * This enables streaming gen_ai spans, avoiding payload size limits of usual transactions.
 *
 * Because the v2 span format is not subject to the transaction payload-size limits that gen_ai message
 * truncation exists to work around, enabling this option also disables gen_ai input truncation (and the
 * inline-media redaction that rides along with it) by default. Set `enableTruncation: true` on the
 * respective AI integration to opt back into truncation.
 *
 * @default false
 */
 streamGenAiSpans?: boolean;
Expand Down
Loading
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
feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled#21603

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 Merged

andreiborza
merged 5 commits into

from

Jun 17, 2026
 Merged


feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled
#21603
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f15a1f7

feat(core): Disable gen_ai message truncation by default when `stream…


andreiborza Jun 17, 2026
3df1b22

Fix integration tests


andreiborza Jun 17, 2026
f9af3df

Update packages/core/src/tracing/ai/utils.ts


andreiborza Jun 17, 2026
6e648eb

Remove changelog entry, clarify comment


andreiborza Jun 17, 2026
289b621

Merge branch 'develop' into ab/stream-genai-spans-disable-truncationa


andreiborza Jun 17, 2026

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19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/instrument-with-truncation.mjs

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.anthropicAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/anthropic/v1/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-media-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Send the image showing the number 3
 // Put the image in the last message so it doesn't get dropped
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-message-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

91 changes: 48 additions & 43 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -606,7 +606,7 @@ describe('Anthropic integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -659,51 +659,56 @@ describe('Anthropic integration', () => {
 },
 );

 createEsmAndCjsTests(__dirname, 'scenario-media-truncation.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 createEsmAndCjsTests(
 __dirname,
 'scenario-media-truncation.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 },
 },
 },
 ],
 },
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 ],
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;

 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 });
 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 },
 );

 createEsmAndCjsTests(
 __dirname,
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/google-genai/instrument-with-truncation.mjs

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.googleGenAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1beta/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
...ckages/node-integration-tests/suites/tracing/google-genai/scenario-message-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -41,7 +41,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentGoogleGenAIClient(mockClient);
 const client = instrumentGoogleGenAIClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/google-genai/test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -347,7 +347,7 @@ describe('Google GenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/langchain/instrument-with-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/embeddings')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -199,7 +199,7 @@ describe('LangChain integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/langchain/v1/instrument-with-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/chat/completions')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/v1/test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -216,7 +216,7 @@ conditionalTest({ min: 20 })('LangChain integration (v1)', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

18 changes: 18 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/openai/instrument-with-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.openAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 if (event.transaction.includes('/openai/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

6 changes: 3 additions & 3 deletions
dev-packages/node-integration-tests/suites/tracing/openai/test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1174,7 +1174,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-completions.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -1278,7 +1278,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-responses.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates string inputs when they exceed byte limit', async () => {
 await createRunner()
Expand DownExpand Up@@ -1603,7 +1603,7 @@ describe('OpenAI integration', () => {
 });
 });

 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-truncation.mjs', (createRunner, test) => {
 test('redacts inline base64 image data in vision requests', async () => {
 await createRunner()
 .ignore('event')
Expand Down

2 changes: 1 addition & 1 deletion
...ration-tests/suites/tracing/openai/truncation/scenario-message-truncation-completions.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -45,7 +45,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
...egration-tests/suites/tracing/openai/truncation/scenario-message-truncation-responses.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -77,7 +77,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Create 1 large message that gets truncated to fit within the 20KB limit
 const largeContent = 'A'.repeat(25000) + 'B'.repeat(25000); // ~50KB gets truncated to include only As
Expand Down

12 changes: 12 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/vercelai/instrument-with-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.vercelAIIntegration({ enableTruncation: true })],
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/vercelai/test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -446,7 +446,7 @@ describe('Vercel AI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

15 changes: 13 additions & 2 deletions
packages/core/src/tracing/ai/utils.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -60,11 +60,22 @@ export function resolveAIRecordingOptions<T extends AIRecordingOptions>(options?
/**
 * Resolves whether truncation should be enabled.
 * If the user explicitly set `enableTruncation`, that value is used.
 * Otherwise, truncation is disabled when span streaming is active.
 * Otherwise, truncation is disabled whenever gen_ai spans are sent through the span streaming / v2
 * span path, i.e. full span streaming (`traceLifecycle: 'stream'`) or `streamGenAiSpans`. That path
 * is not subject to the transaction payload-size limits that truncation works around, so the full
 * message data can be retained.
 */
export function shouldEnableTruncation(enableTruncation: boolean | undefined): boolean {
 if (enableTruncation !== undefined) {
 return enableTruncation;
 }

 const client = getClient();
 return enableTruncation ?? !(client && hasSpanStreamingEnabled(client));
 if (!client) {
 return true;
 }

 return !hasSpanStreamingEnabled(client) && !client.getOptions().streamGenAiSpans;
}

/**
Expand Down

5 changes: 5 additions & 0 deletions
packages/core/src/types/options.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -569,6 +569,11 @@ export interface ClientOptions<TO extends BaseTransportOptions = BaseTransportOp
 *
 * This enables streaming gen_ai spans, avoiding payload size limits of usual transactions.
 *
 * Because the v2 span format is not subject to the transaction payload-size limits that gen_ai message
 * truncation exists to work around, enabling this option also disables gen_ai input truncation (and the
 * inline-media redaction that rides along with it) by default. Set `enableTruncation: true` on the
 * respective AI integration to opt back into truncation.
 *
 * @default false
 */
 streamGenAiSpans?: boolean;
Expand Down
Loading
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
feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled#21603

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
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to your account

 Merged

andreiborza
merged 5 commits into

from

Jun 17, 2026
 Merged


feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled
#21603
Show file tree
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f15a1f7

feat(core): Disable gen_ai message truncation by default when `stream…


andreiborza Jun 17, 2026
3df1b22

Fix integration tests


andreiborza Jun 17, 2026
f9af3df

Update packages/core/src/tracing/ai/utils.ts


andreiborza Jun 17, 2026
6e648eb

Remove changelog entry, clarify comment


andreiborza Jun 17, 2026
289b621

Merge branch 'develop' into ab/stream-genai-spans-disable-truncationa


andreiborza Jun 17, 2026

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19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/instrument-with-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.anthropicAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/anthropic/v1/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-media-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Send the image showing the number 3
 // Put the image in the last message so it doesn't get dropped
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-message-truncation.mjs

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

91 changes: 48 additions & 43 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -606,7 +606,7 @@ describe('Anthropic integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -659,51 +659,56 @@ describe('Anthropic integration', () => {
 },
 );

 createEsmAndCjsTests(__dirname, 'scenario-media-truncation.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 createEsmAndCjsTests(
 __dirname,
 'scenario-media-truncation.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 },
 },
 },
 ],
 },
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 ],
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;

 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 });
 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 },
 );

 createEsmAndCjsTests(
 __dirname,
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/google-genai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.googleGenAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1beta/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
...ckages/node-integration-tests/suites/tracing/google-genai/scenario-message-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,7 +41,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentGoogleGenAIClient(mockClient);
 const client = instrumentGoogleGenAIClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/google-genai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -347,7 +347,7 @@ describe('Google GenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/langchain/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/embeddings')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -199,7 +199,7 @@ describe('LangChain integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/langchain/v1/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/chat/completions')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/v1/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -216,7 +216,7 @@ conditionalTest({ min: 20 })('LangChain integration (v1)', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

18 changes: 18 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/openai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.openAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 if (event.transaction.includes('/openai/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

6 changes: 3 additions & 3 deletions
dev-packages/node-integration-tests/suites/tracing/openai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -1174,7 +1174,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-completions.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -1278,7 +1278,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-responses.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates string inputs when they exceed byte limit', async () => {
 await createRunner()
Expand DownExpand Up@@ -1603,7 +1603,7 @@ describe('OpenAI integration', () => {
 });
 });

 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-truncation.mjs', (createRunner, test) => {
 test('redacts inline base64 image data in vision requests', async () => {
 await createRunner()
 .ignore('event')
Expand Down

2 changes: 1 addition & 1 deletion
...ration-tests/suites/tracing/openai/truncation/scenario-message-truncation-completions.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -45,7 +45,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
...egration-tests/suites/tracing/openai/truncation/scenario-message-truncation-responses.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -77,7 +77,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Create 1 large message that gets truncated to fit within the 20KB limit
 const largeContent = 'A'.repeat(25000) + 'B'.repeat(25000); // ~50KB gets truncated to include only As
Expand Down

12 changes: 12 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/vercelai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.vercelAIIntegration({ enableTruncation: true })],
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/vercelai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -446,7 +446,7 @@ describe('Vercel AI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

15 changes: 13 additions & 2 deletions
packages/core/src/tracing/ai/utils.ts

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Expand Up@@ -60,11 +60,22 @@ export function resolveAIRecordingOptions<T extends AIRecordingOptions>(options?
/**
 * Resolves whether truncation should be enabled.
 * If the user explicitly set `enableTruncation`, that value is used.
 * Otherwise, truncation is disabled when span streaming is active.
 * Otherwise, truncation is disabled whenever gen_ai spans are sent through the span streaming / v2
 * span path, i.e. full span streaming (`traceLifecycle: 'stream'`) or `streamGenAiSpans`. That path
 * is not subject to the transaction payload-size limits that truncation works around, so the full
 * message data can be retained.
 */
export function shouldEnableTruncation(enableTruncation: boolean | undefined): boolean {
 if (enableTruncation !== undefined) {
 return enableTruncation;
 }

 const client = getClient();
 return enableTruncation ?? !(client && hasSpanStreamingEnabled(client));
 if (!client) {
 return true;
 }

 return !hasSpanStreamingEnabled(client) && !client.getOptions().streamGenAiSpans;
}

/**
Expand Down

5 changes: 5 additions & 0 deletions
packages/core/src/types/options.ts

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Expand Up@@ -569,6 +569,11 @@ export interface ClientOptions<TO extends BaseTransportOptions = BaseTransportOp
 *
 * This enables streaming gen_ai spans, avoiding payload size limits of usual transactions.
 *
 * Because the v2 span format is not subject to the transaction payload-size limits that gen_ai message
 * truncation exists to work around, enabling this option also disables gen_ai input truncation (and the
 * inline-media redaction that rides along with it) by default. Set `enableTruncation: true` on the
 * respective AI integration to opt back into truncation.
 *
 * @default false
 */
 streamGenAiSpans?: boolean;
Expand Down
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, '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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feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled#21603

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 Merged

andreiborza
merged 5 commits into

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Jun 17, 2026
 Merged


feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled
#21603
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f15a1f7

feat(core): Disable gen_ai message truncation by default when `stream…


andreiborza Jun 17, 2026
3df1b22

Fix integration tests


andreiborza Jun 17, 2026
f9af3df

Update packages/core/src/tracing/ai/utils.ts


andreiborza Jun 17, 2026
6e648eb

Remove changelog entry, clarify comment


andreiborza Jun 17, 2026
289b621

Merge branch 'develop' into ab/stream-genai-spans-disable-truncationa


andreiborza Jun 17, 2026

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19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/instrument-with-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.anthropicAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/anthropic/v1/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-media-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Send the image showing the number 3
 // Put the image in the last message so it doesn't get dropped
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-message-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

91 changes: 48 additions & 43 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -606,7 +606,7 @@ describe('Anthropic integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -659,51 +659,56 @@ describe('Anthropic integration', () => {
 },
 );

 createEsmAndCjsTests(__dirname, 'scenario-media-truncation.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 createEsmAndCjsTests(
 __dirname,
 'scenario-media-truncation.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 },
 },
 },
 ],
 },
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 ],
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;

 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 });
 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 },
 );

 createEsmAndCjsTests(
 __dirname,
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/google-genai/instrument-with-truncation.mjs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.googleGenAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1beta/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
...ckages/node-integration-tests/suites/tracing/google-genai/scenario-message-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,7 +41,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentGoogleGenAIClient(mockClient);
 const client = instrumentGoogleGenAIClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/google-genai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -347,7 +347,7 @@ describe('Google GenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/langchain/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/embeddings')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -199,7 +199,7 @@ describe('LangChain integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/langchain/v1/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/chat/completions')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/v1/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -216,7 +216,7 @@ conditionalTest({ min: 20 })('LangChain integration (v1)', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

18 changes: 18 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/openai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.openAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 if (event.transaction.includes('/openai/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

6 changes: 3 additions & 3 deletions
dev-packages/node-integration-tests/suites/tracing/openai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -1174,7 +1174,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-completions.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -1278,7 +1278,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-responses.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates string inputs when they exceed byte limit', async () => {
 await createRunner()
Expand DownExpand Up@@ -1603,7 +1603,7 @@ describe('OpenAI integration', () => {
 });
 });

 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-truncation.mjs', (createRunner, test) => {
 test('redacts inline base64 image data in vision requests', async () => {
 await createRunner()
 .ignore('event')
Expand Down

2 changes: 1 addition & 1 deletion
...ration-tests/suites/tracing/openai/truncation/scenario-message-truncation-completions.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -45,7 +45,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
...egration-tests/suites/tracing/openai/truncation/scenario-message-truncation-responses.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -77,7 +77,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Create 1 large message that gets truncated to fit within the 20KB limit
 const largeContent = 'A'.repeat(25000) + 'B'.repeat(25000); // ~50KB gets truncated to include only As
Expand Down

12 changes: 12 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/vercelai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.vercelAIIntegration({ enableTruncation: true })],
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/vercelai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -446,7 +446,7 @@ describe('Vercel AI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

15 changes: 13 additions & 2 deletions
packages/core/src/tracing/ai/utils.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -60,11 +60,22 @@ export function resolveAIRecordingOptions<T extends AIRecordingOptions>(options?
/**
 * Resolves whether truncation should be enabled.
 * If the user explicitly set `enableTruncation`, that value is used.
 * Otherwise, truncation is disabled when span streaming is active.
 * Otherwise, truncation is disabled whenever gen_ai spans are sent through the span streaming / v2
 * span path, i.e. full span streaming (`traceLifecycle: 'stream'`) or `streamGenAiSpans`. That path
 * is not subject to the transaction payload-size limits that truncation works around, so the full
 * message data can be retained.
 */
export function shouldEnableTruncation(enableTruncation: boolean | undefined): boolean {
 if (enableTruncation !== undefined) {
 return enableTruncation;
 }

 const client = getClient();
 return enableTruncation ?? !(client && hasSpanStreamingEnabled(client));
 if (!client) {
 return true;
 }

 return !hasSpanStreamingEnabled(client) && !client.getOptions().streamGenAiSpans;
}

/**
Expand Down

5 changes: 5 additions & 0 deletions
packages/core/src/types/options.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -569,6 +569,11 @@ export interface ClientOptions<TO extends BaseTransportOptions = BaseTransportOp
 *
 * This enables streaming gen_ai spans, avoiding payload size limits of usual transactions.
 *
 * Because the v2 span format is not subject to the transaction payload-size limits that gen_ai message
 * truncation exists to work around, enabling this option also disables gen_ai input truncation (and the
 * inline-media redaction that rides along with it) by default. Set `enableTruncation: true` on the
 * respective AI integration to opt back into truncation.
 *
 * @default false
 */
 streamGenAiSpans?: boolean;
Expand Down
Loading
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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feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled#21603

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 Merged

andreiborza
merged 5 commits into

from

Jun 17, 2026
 Merged


feat(core): Disable gen_ai message truncation by default when streamGenAiSpans is enabled
#21603
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f15a1f7

feat(core): Disable gen_ai message truncation by default when `stream…


andreiborza Jun 17, 2026
3df1b22

Fix integration tests


andreiborza Jun 17, 2026
f9af3df

Update packages/core/src/tracing/ai/utils.ts


andreiborza Jun 17, 2026
6e648eb

Remove changelog entry, clarify comment


andreiborza Jun 17, 2026
289b621

Merge branch 'develop' into ab/stream-genai-spans-disable-truncationa


andreiborza Jun 17, 2026

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19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.anthropicAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/anthropic/v1/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-media-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Send the image showing the number 3
 // Put the image in the last message so it doesn't get dropped
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/anthropic/scenario-message-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,7 +46,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentAnthropicAiClient(mockClient);
 const client = instrumentAnthropicAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

91 changes: 48 additions & 43 deletions
dev-packages/node-integration-tests/suites/tracing/anthropic/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -606,7 +606,7 @@ describe('Anthropic integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -659,51 +659,56 @@ describe('Anthropic integration', () => {
 },
 );

 createEsmAndCjsTests(__dirname, 'scenario-media-truncation.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 createEsmAndCjsTests(
 __dirname,
 'scenario-media-truncation.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates media attachment, keeping all other details', async () => {
 const expectedMediaMessages = JSON.stringify([
 {
 role: 'user',
 content: [
 {
 type: 'image',
 source: {
 type: 'base64',
 media_type: 'image/png',
 data: '[Blob substitute]',
 },
 },
 },
 ],
 },
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 ],
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;
 ]);
 await createRunner()
 .ignore('event')
 .expect({
 transaction: {
 transaction: 'main',
 },
 })
 .expect({
 span: container => {
 expect(container.items).toHaveLength(1);
 const [firstSpan] = container.items;

 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 });
 // [0] messages.create with media attachment — image data replaced, other fields preserved
 expect(firstSpan!.name).toBe('chat claude-3-haiku-20240307');
 expect(firstSpan!.status).toBe('ok');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ATTRIBUTE].value).toBe(expectedMediaMessages);
 expect(firstSpan!.attributes[GEN_AI_OPERATION_NAME_ATTRIBUTE].value).toBe('chat');
 expect(firstSpan!.attributes['sentry.op'].value).toBe('gen_ai.chat');
 expect(firstSpan!.attributes['sentry.origin'].value).toBe('auto.ai.anthropic');
 expect(firstSpan!.attributes[GEN_AI_SYSTEM_ATTRIBUTE].value).toBe('anthropic');
 expect(firstSpan!.attributes[GEN_AI_REQUEST_MODEL_ATTRIBUTE].value).toBe('claude-3-haiku-20240307');
 expect(firstSpan!.attributes[GEN_AI_INPUT_MESSAGES_ORIGINAL_LENGTH_ATTRIBUTE].value).toBe(2);
 },
 })
 .start()
 .completed();
 });
 },
 );

 createEsmAndCjsTests(
 __dirname,
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/google-genai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.googleGenAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1beta/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
...ckages/node-integration-tests/suites/tracing/google-genai/scenario-message-truncation.mjs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,7 +41,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentGoogleGenAIClient(mockClient);
 const client = instrumentGoogleGenAIClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
Expand Down

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/google-genai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -347,7 +347,7 @@ describe('Google GenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/langchain/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/embeddings')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -199,7 +199,7 @@ describe('LangChain integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

19 changes: 19 additions & 0 deletions
...ackages/node-integration-tests/suites/tracing/langchain/v1/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.langChainIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 // Filter out mock express server transactions
 if (event.transaction.includes('/v1/messages') || event.transaction.includes('/v1/chat/completions')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/langchain/v1/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -216,7 +216,7 @@ conditionalTest({ min: 20 })('LangChain integration (v1)', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
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18 changes: 18 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/openai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.openAIIntegration({ enableTruncation: true })],
 beforeSendTransaction: event => {
 if (event.transaction.includes('/openai/')) {
 return null;
 }
 return event;
 },
 streamGenAiSpans: true,
});

6 changes: 3 additions & 3 deletions
dev-packages/node-integration-tests/suites/tracing/openai/test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -1174,7 +1174,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-completions.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit - keeps only last message and crops it', async () => {
 await createRunner()
Expand DownExpand Up@@ -1278,7 +1278,7 @@ describe('OpenAI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'truncation/scenario-message-truncation-responses.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates string inputs when they exceed byte limit', async () => {
 await createRunner()
Expand DownExpand Up@@ -1603,7 +1603,7 @@ describe('OpenAI integration', () => {
 });
 });

 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-pii.mjs', (createRunner, test) => {
 createEsmAndCjsTests(__dirname, 'scenario-vision.mjs', 'instrument-with-truncation.mjs', (createRunner, test) => {
 test('redacts inline base64 image data in vision requests', async () => {
 await createRunner()
 .ignore('event')
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2 changes: 1 addition & 1 deletion
...ration-tests/suites/tracing/openai/truncation/scenario-message-truncation-completions.mjs

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Expand Up@@ -45,7 +45,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Test 1: Given an array of messages only the last message should be kept
 // The last message should be truncated to fit within the 20KB limit
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2 changes: 1 addition & 1 deletion
...egration-tests/suites/tracing/openai/truncation/scenario-message-truncation-responses.mjs

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Expand Up@@ -77,7 +77,7 @@ async function run() {
 apiKey: 'mock-api-key',
 });

 const client = instrumentOpenAiClient(mockClient);
 const client = instrumentOpenAiClient(mockClient, { enableTruncation: true, recordInputs: true });

 // Create 1 large message that gets truncated to fit within the 20KB limit
 const largeContent = 'A'.repeat(25000) + 'B'.repeat(25000); // ~50KB gets truncated to include only As
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12 changes: 12 additions & 0 deletions
dev-packages/node-integration-tests/suites/tracing/vercelai/instrument-with-truncation.mjs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
import * as Sentry from '@sentry/node';
import { loggingTransport } from '@sentry-internal/node-integration-tests';

Sentry.init({
 dsn: 'https://public@dsn.ingest.sentry.io/1337',
 release: '1.0',
 tracesSampleRate: 1.0,
 dataCollection: { genAI: { inputs: true, outputs: true } },
 transport: loggingTransport,
 integrations: [Sentry.vercelAIIntegration({ enableTruncation: true })],
 streamGenAiSpans: true,
});

2 changes: 1 addition & 1 deletion
dev-packages/node-integration-tests/suites/tracing/vercelai/test.ts

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Expand Up@@ -446,7 +446,7 @@ describe('Vercel AI integration', () => {
 createEsmAndCjsTests(
 __dirname,
 'scenario-message-truncation.mjs',
 'instrument-with-pii.mjs',
 'instrument-with-truncation.mjs',
 (createRunner, test) => {
 test('truncates messages when they exceed byte limit', async () => {
 await createRunner()
Expand Down

15 changes: 13 additions & 2 deletions
packages/core/src/tracing/ai/utils.ts

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Expand Up@@ -60,11 +60,22 @@ export function resolveAIRecordingOptions<T extends AIRecordingOptions>(options?
/**
 * Resolves whether truncation should be enabled.
 * If the user explicitly set `enableTruncation`, that value is used.
 * Otherwise, truncation is disabled when span streaming is active.
 * Otherwise, truncation is disabled whenever gen_ai spans are sent through the span streaming / v2
 * span path, i.e. full span streaming (`traceLifecycle: 'stream'`) or `streamGenAiSpans`. That path
 * is not subject to the transaction payload-size limits that truncation works around, so the full
 * message data can be retained.
 */
export function shouldEnableTruncation(enableTruncation: boolean | undefined): boolean {
 if (enableTruncation !== undefined) {
 return enableTruncation;
 }

 const client = getClient();
 return enableTruncation ?? !(client && hasSpanStreamingEnabled(client));
 if (!client) {
 return true;
 }

 return !hasSpanStreamingEnabled(client) && !client.getOptions().streamGenAiSpans;
}

/**
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5 changes: 5 additions & 0 deletions
packages/core/src/types/options.ts

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Expand Up@@ -569,6 +569,11 @@ export interface ClientOptions<TO extends BaseTransportOptions = BaseTransportOp
 *
 * This enables streaming gen_ai spans, avoiding payload size limits of usual transactions.
 *
 * Because the v2 span format is not subject to the transaction payload-size limits that gen_ai message
 * truncation exists to work around, enabling this option also disables gen_ai input truncation (and the
 * inline-media redaction that rides along with it) by default. Set `enableTruncation: true` on the
 * respective AI integration to opt back into truncation.
 *
 * @default false
 */
 streamGenAiSpans?: boolean;
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