pydantic-ai
https://github.com/pydantic/pydantic-ai
Python
GenAI Agent Framework, the Pydantic way
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- Issues
- Events from tool calls that trail a streamed final output never reach `event_stream_handler`
- tests: pin Bedrock thinking + auto-output silent downgrade (native/prompted) path
- [roundtrip-sweep] ModelMessagesTypeAdapter: LoadCapabilityReturnPart.content silently drops unknown keys on round-trip (gap in PR #7933 fix)
- `TestModel` structured output retries out on `datetime`, `UUID`, `time`, and URL fields
- `OpenAIChatModel` rejects Nebius responses because `metadata.weight_versions` is a list
- Make `TestModel` generate valid `datetime`, `UUID`, `time`, and URL values
- `require_parameter_descriptions=True` ignores descriptions on required `Annotated` parameters
- Document the Fly.io Sprites sandbox capability
- Use `context_window_used` to trigger stateless OpenAI compaction
- Generate a committed docs atlas from `docs/navigation.yml`
- Docs
- Python not yet supported