ColtenOuO opened a new pull request, #70433:
URL: https://github.com/apache/airflow/pull/70433
## Summary
`HookToolset` advertises a hook method's `bytes`-typed parameters to the LLM
as JSON strings (`_TYPE_MAP` maps `bytes` -> `{"type": "string"}`, since JSON
has no binary type), but `call_tool` never converted the string back to `bytes`
before calling the method. A hook method like `S3Hook.load_bytes(bytes_data:
bytes, ...)` would receive a plain `str`, failing at runtime with an opaque
`TypeError: a bytes-like object is required, not 'str'` from `BytesIO`.
## Changes
- Add `_bytes_param_names(method)` to resolve which parameters (including
`Optional[bytes]`/`bytes | None`) are `bytes`-typed.
- `call_tool` now UTF-8-encodes any `str` value supplied for those
parameters before dispatching to the hook method.
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##### Was generative AI tooling used to co-author this PR?
- [X] Yes — Claude Code (Sonnet 5)
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