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feat(core)!: Remove enableTruncation flag and gen_ai text truncation#22548

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feat(core)!: Remove enableTruncation flag and gen_ai text truncation#22548
nicohrubec wants to merge 2 commits into
feat/remove-enable-truncation-flagfrom
feat/remove-gen-ai-text-truncation

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@nicohrubec

@nicohrubec nicohrubec commented Jul 23, 2026

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Remove genai text truncation:

  • Removes the enableTruncation integration option and all gen_ai text-truncation logic (messageTruncation.ts); byte-limit cropping and "keep only the last message" are gone now that gen_ai spans always use the v2 span path.
  • Keeps inline media stripping and makes it unconditional, so this is now being applied to both transaction and span streaming paths.
  • All input messages are now recorded in full (media stripped), stripping is consolidated into mediaStripping.ts.
  • Covers both @sentry/core and @sentry/server-utils.
  • Removes truncation specific tests. Adds a new span streaming scenario because the span streaming path was so far only tested together with truncation.

Removes the `enableTruncation` integration option and the gen_ai message
text-truncation machinery. Now that gen_ai spans always ride the v2 span
path (far larger size limits than legacy transactions), the byte-limit
cropping and "keep only the last message" reduction is dead weight.

Inline media stripping is kept and is now unconditional: previously media
was only stripped on the truncation path, so with truncation off inline
base64 could leak into span attributes for openai/anthropic/google-genai/
vercel-ai/workers-ai. `getGenAiMessagesJsonString` now always strips media
before serializing, keeping all messages.

Media-stripping logic is consolidated into `mediaStripping.ts`;
`messageTruncation.ts` is deleted. Truncation-specific test scenarios and
instruments are removed; image-stripping tests are re-pointed at the
default recording instruments, and full span-streaming coverage is kept
via non-truncation streaming tests.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

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Cursor Bugbot has reviewed your changes and found 2 potential issues.

Fix All in Cursor

❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit e541815. Configure here.

Comment thread packages/core/src/server-exports.ts
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size-limit report 📦

Path Size % Change Change
@sentry/browser 27.77 kB -0.06% -16 B 🔽
@sentry/browser - with treeshaking flags 26.21 kB -0.06% -14 B 🔽
@sentry/browser (incl. Tracing) 46.29 kB -0.04% -16 B 🔽
@sentry/browser (incl. Tracing + Span Streaming) 48.08 kB +0.01% +4 B 🔺
@sentry/browser (incl. Tracing, Profiling) 51.12 kB +0.01% +5 B 🔺
@sentry/browser (incl. Tracing, Replay) 85.57 kB -0.02% -11 B 🔽
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags 75.21 kB -0.02% -11 B 🔽
@sentry/browser (incl. Tracing, Replay with Canvas) 90.28 kB -0.02% -12 B 🔽
@sentry/browser (incl. Tracing, Replay, Feedback) 102.93 kB -0.04% -32 B 🔽
@sentry/browser (incl. Feedback) 44.96 kB +0.01% +3 B 🔺
@sentry/browser (incl. sendFeedback) 32.57 kB -0.05% -14 B 🔽
@sentry/browser (incl. FeedbackAsync) 37.63 kB -0.01% -2 B 🔽
@sentry/browser (incl. Metrics) 28.86 kB -0.06% -17 B 🔽
@sentry/browser (incl. Logs) 29.08 kB -0.09% -24 B 🔽
@sentry/browser (incl. Metrics & Logs) 29.78 kB -0.06% -16 B 🔽
@sentry/react 29.56 kB -0.09% -24 B 🔽
@sentry/react (incl. Tracing) 48.59 kB -0.02% -5 B 🔽
@sentry/vue 33.2 kB -0.06% -18 B 🔽
@sentry/vue (incl. Tracing) 48.25 kB -0.05% -20 B 🔽
@sentry/svelte 27.79 kB -0.07% -19 B 🔽
CDN Bundle 30.1 kB -0.02% -5 B 🔽
CDN Bundle (incl. Tracing) 48.16 kB -0.02% -7 B 🔽
CDN Bundle (incl. Logs, Metrics) 31.69 kB -0.02% -4 B 🔽
CDN Bundle (incl. Tracing, Logs, Metrics) 49.48 kB -0.02% -5 B 🔽
CDN Bundle (incl. Replay, Logs, Metrics) 70.95 kB -0.01% -1 B 🔽
CDN Bundle (incl. Tracing, Replay) 85.72 kB -0.01% -6 B 🔽
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) 87.02 kB -0.01% -1 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback) 91.5 kB -0.01% -1 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) 92.78 kB - -
CDN Bundle - uncompressed 89.72 kB -0.04% -33 B 🔽
CDN Bundle (incl. Tracing) - uncompressed 144.82 kB -0.03% -33 B 🔽
CDN Bundle (incl. Logs, Metrics) - uncompressed 94.43 kB -0.04% -33 B 🔽
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed 148.8 kB -0.03% -33 B 🔽
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed 219.19 kB -0.02% -33 B 🔽
CDN Bundle (incl. Tracing, Replay) - uncompressed 264.06 kB -0.02% -33 B 🔽
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed 268.02 kB -0.02% -33 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed 277.76 kB -0.02% -33 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed 281.71 kB -0.02% -33 B 🔽
@sentry/nextjs (client) 51.1 kB -0.06% -26 B 🔽
@sentry/sveltekit (client) 46.71 kB -0.08% -33 B 🔽
@sentry/core/server 79.31 kB -1.1% -878 B 🔽
@sentry/core/browser 51.98 kB -0.03% -14 B 🔽
@sentry/node 123.44 kB -0.96% -1.19 kB 🔽
@sentry/node (incl. diagnostics channel injection) 148.85 kB -0.81% -1.21 kB 🔽
@sentry/node/import (ESM hook with diagnostics-channel injection) 70.03 kB -0.01% -2 B 🔽
@sentry/node - without tracing 74.43 kB -0.45% -330 B 🔽
@sentry/aws-serverless 83.92 kB -0.4% -332 B 🔽
@sentry/cloudflare (withSentry) - minified 194.38 kB -1.15% -2.26 kB 🔽
@sentry/cloudflare (withSentry) 477.98 kB -1.22% -5.89 kB 🔽

View base workflow run

The migrated media-stripping test hard-coded `auto.ai.anthropic`, which is
`auto.ai.orchestrion.anthropic` under the orchestrion runtime. Gate it on
`isOrchestrionEnabled()` like the rest of the suite.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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