OpenAI structured outputs support local $ref pointers, including recursive
definitions, so toStrictJsonSchema no longer inlines them: $defs and
definitions are normalized where they are declared, an optional $ref
property is widened with an anyOf null branch, and external or dangling
$refs are reported as unsupported. omitNullToolArguments follows local
$refs when deciding whether a null is accepted. The Vercel provider still
inlines definitions before converting to Zod, which does not follow $ref.
Co-authored-by: AseemPrasad <aseemprasad0520@gmail.com>
Claude-Session: https://claude.ai/code/session_01TDrxCHn2hg51HmxVstSUgs
The strict flag now calls the base initializer (schema_config kwargs keep
working), emits strict on the wrapped tool, and mirrors the TypeScript
pipeline: optional parameters become required-nullable, unsupported
schemas downgrade the tool to non-strict, and null arguments the tool
schema rejects are dropped before execution.
Co-authored-by: AseemPrasad <aseemprasad0520@gmail.com>
Claude-Session: https://claude.ai/code/session_01TDrxCHn2hg51HmxVstSUgs
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