1.0.1:

- Add structured outputs support (beta feature `structured-outputs-2025-11-13`)
  - `OutputFormat` type and `jsonSchemaFormat` helper for JSON outputs
  - `output_format` field on `CreateMessage`
  - `strict` field on `Tool` and `strictFunctionTool` helper for strict tool validation
  - `additionalProperties` field on `InputSchema`
  - `Refusal` constructor for `StopReason`
- Add `claude-structured-outputs-example`

1.0.0:

- Initial release