feat(anthropic): sanitize the unsupported JSON schema validation properties#14790
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aayush-kapoor wants to merge 3 commits intomainfrom
Open
feat(anthropic): sanitize the unsupported JSON schema validation properties#14790aayush-kapoor wants to merge 3 commits intomainfrom
aayush-kapoor wants to merge 3 commits intomainfrom
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This was referenced Apr 28, 2026
gr2m
approved these changes
Apr 28, 2026
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| return descriptions.length === 0 | ||
| ? undefined | ||
| : `Additional constraints: ${descriptions.join('; ')}.`; |
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I don't think it's a problem in this case, but made me think if this is a form of prompt altering that we are trying to stay out of. Also using English while a the rest of the prompt might be potentially a different language. I'm sure language model can handle it, curious what you think
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Background
#13355 & #14342
Anthropic rejects certain schema validation properties (documented here)
When those properties are passed through for structured output definitions (not for tool definitions), Anthropic returns a 400 error.
Summary
Introduce a
sanitize-json-schema.tsfile that strips the rejected properties, defined in a set.However to ensure full validation, the schema is then converted to a simple string and passed through as
description()Manual Verification
verified by running the examples:
examples/ai-functions/src/generate-text/anthropic/output-object-zod-positive-number.tsexamples/ai-functions/src/generate-text/anthropic/output-object-zod.tsfailed before the fix and worked (and respected the constraint if any) after the fix
Checklist
pnpm changesetin the project root)Related Issues
fixes #13355 and #14342