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Sweep 31 Oct 2026 · 01:10Z Build v2.1.316 534 read Stable v2.1.309 Latest v2.1.316 Next v2.1.316 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Developer Platform 30 Oct 2026
One change · api

structured-outputs changedbuild-with-claude/structured-outputs

Nearest release: v2.1.315, published under an hour before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Recorded here
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First seen 14 Aug 2026 this site's first read of the page
Recorded edits29to this page, all time

The whole hunk

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2801* **[Citations](https://platform.claude.com/docs/en/build-with-claude/citations):** Citations require interleaving citation blocks with text, which conflicts with strict JSON schema constraints. The API returns a 400 error if citations are enabled with `output_config.format`.
2801* **[Citations](https://platform.claude.com/docs/en/build-with-claude/citations):** Citations require interleaving citation blocks with text, which conflicts with strict JSON schema constraints. The API returns a 400 error if citations are enabled with `output_config.format`. To extract structured data with a citation for each value, see [Get structured data with citations](https://platform.claude.com/docs/en/build-with-claude/citations#get-structured-data-with-citations).
28022802* **Message prefilling:** Prefilling is incompatible with JSON outputs.
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