Expose max_retries to tool's run context

[yf-yang]

Description

Can we also adds each tool's max retries limit to the run context? Therefore when raising ModelRetry we can instruct the model to avoid using the tool again softly instead of a hard stop (raise an error and interrupt the whole loop)

References

No response

[DouweM]

@yf-yang Good idea, we'd want to add tool.max_retries here (and to RunContext, and to TemporalRunContext):

pydantic-ai/pydantic_ai_slim/pydantic_ai/_tool_manager.py

Line 149 in 8e652f0

retry=self.ctx.retries.get(name, 0),

You'd want to soft-fail inside your tool function when ctx.retry == ctx.max_retries.

[yf-yang]

Will it involve a lot of test cases? If not I can PR (or that's a minor feature you can do it yourself)

[DouweM]

@yf-yang I'll see if I can implement it today, should be pretty quick :)