feat(js/plugins/anthropic): add structured output support#3881
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cabljac merged 44 commits intofirebase:mainfrom Jan 5, 2026
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feat(js/plugins/anthropic): add structured output support#3881cabljac merged 44 commits intofirebase:mainfrom
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…ined params to prevent possible issues
…cting with Anthropic plugin's anthropic sdk version
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…e/genkit into refactor-anthropic-body
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Co-authored-by: Pavel Jbanov <[email protected]>
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Co-authored-by: Corie Watson <[email protected]> Co-authored-by: Darren Ackers <[email protected]> Co-authored-by: Pavel Jbanov <[email protected]>
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This is a draft PR to support structured output in the anthropic plugin, to resolve #3854
Notes:
^0.24.3, otherwise the following occurs (because of the installation of the latest version of the Anthropic SDK in the Anthropic plugin):##Features
[x] Structured output support via Anthropic beta API (structured-outputs-2025-11-13)
[x] output_format parameter passed to API for both streaming and non-streaming requests
[x] toAnthropicSchema() function transforms Zod schemas to Anthropic-compatible JSON schemas
[x] isStructuredOutputEnabled() method detects when structured output should be used
[x] Model support: claude-sonnet-4-5, claude-haiku-4-5, claude-opus-4-1, claude-opus-4-5
[x] Comprehensive test suite covering happy path and edge cases
[x] Error handling for invalid configurations
[x] Backward compatible (only activates when constrained: true and format: 'json')