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on_tool_start() — langchain Function Reference

Architecture documentation for the on_tool_start() function in callbacks.py from the langchain codebase.

Function python LangChainCore MessageInterface calls 2 called by 1

Entity Profile

Dependency Diagram

graph TD
  296520cf_bde5_55c5_a720_14c572e24fec["on_tool_start()"]
  b9664d7e_7900_dd8a_b9b3_2ee136c7b790["FakeCallbackHandler"]
  296520cf_bde5_55c5_a720_14c572e24fec -->|defined in| b9664d7e_7900_dd8a_b9b3_2ee136c7b790
  acc84b13_d141_e7cb_455c_5ce32053a147["on_tool_start()"]
  acc84b13_d141_e7cb_455c_5ce32053a147 -->|calls| 296520cf_bde5_55c5_a720_14c572e24fec
  b32e0256_36e5_9274_7465_5f3521256775["on_tool_start_common()"]
  296520cf_bde5_55c5_a720_14c572e24fec -->|calls| b32e0256_36e5_9274_7465_5f3521256775
  acc84b13_d141_e7cb_455c_5ce32053a147["on_tool_start()"]
  296520cf_bde5_55c5_a720_14c572e24fec -->|calls| acc84b13_d141_e7cb_455c_5ce32053a147
  style 296520cf_bde5_55c5_a720_14c572e24fec fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/partners/openai/tests/unit_tests/fake/callbacks.py lines 166–167

    def on_tool_start(self, *args: Any, **kwargs: Any) -> Any:
        self.on_tool_start_common()

Domain

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Defined In

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Frequently Asked Questions

What does on_tool_start() do?
on_tool_start() is a function in the langchain codebase, defined in libs/partners/openai/tests/unit_tests/fake/callbacks.py.
Where is on_tool_start() defined?
on_tool_start() is defined in libs/partners/openai/tests/unit_tests/fake/callbacks.py at line 166.
What does on_tool_start() call?
on_tool_start() calls 2 function(s): on_tool_start, on_tool_start_common.
What calls on_tool_start()?
on_tool_start() is called by 1 function(s): on_tool_start.

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