Add tool call arguments in ToolContext for RunHooks #1765
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seratch
approved these changes
Sep 22, 2025
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Thanks for the suggestion. I agree this is safer for us to accept than #253; @rm-openai let me know if you have any comments before I merge this within a few business days. |
rm-openai
reviewed
Sep 22, 2025
src/agents/tool_context.py
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| tool_call_id: str = field(default_factory=_assert_must_pass_tool_call_id) | ||
| """The ID of the tool call.""" | ||
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| tool_arguments: Optional[str] = None |
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can you make this non-optional, similar to tool_call_id above?
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No problem, but this will require changes in quite a few test cases, since ToolContext will now always need to be passed a tool_arguments.
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Done. I also updated realtime/session.py where ToolContext needs tool_arguments too.
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Background
Currently, the
RunHookslifecycle (on_tool_start,on_tool_end) exposes theToolandToolContext, but does not include the actual arguments passed to the tool call.resolves #939
Solution
This implementation is inspired by PR #1598.
tool_argumentsfield toToolContextand populate it via from_agent_context with tool_call.arguments.lifecycle_example.pyto demonstrate tool_arguments in hooks