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fix(server-utils): Record Anthropic system instructions from text blocks - #26182
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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size-limit report 📦Compared: 57fa385 (PR test merge using develop at 1652cfe) Against: 1652cfe (develop) · base run #65250 ✅ Baseline matches: this diff contains only this PR's changes.
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Optional E2E testsSome optional checks were not successful. They do not block the merge. 6 not successful, 48 successful. See the run.
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nicohrubec
approved these changes
Nov 6, 2026
andreiborza
marked this pull request as ready for review
November 6, 2026 15:17
andreiborza
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isaacs and
mydea
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a team
November 6, 2026 15:17
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What
Anthropic spans now record
gen_ai.system_instructionswhensystemis an array of text blocks.Why
Text blocks are the way to set prompt caching on the system prompt, and the spans lost the system prompt for these calls.