langchain Architecture Docs
Home / Function/ on_tool_start() — langchain Function Reference

on_tool_start() — langchain Function Reference

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

Function python LangChainCore MessageInterface calls 1

Entity Profile

Dependency Diagram

graph TD
  1b507a14_7b38_f68a_8e39_cfa0c83faac3["on_tool_start()"]
  4b8e5bd6_69e8_42aa_044f_63f638ae480d["FakeCallbackHandler"]
  1b507a14_7b38_f68a_8e39_cfa0c83faac3 -->|defined in| 4b8e5bd6_69e8_42aa_044f_63f638ae480d
  d31bbbf5_30ae_061b_7e24_194b0183d11c["on_tool_start_common()"]
  1b507a14_7b38_f68a_8e39_cfa0c83faac3 -->|calls| d31bbbf5_30ae_061b_7e24_194b0183d11c
  style 1b507a14_7b38_f68a_8e39_cfa0c83faac3 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/partners/anthropic/tests/unit_tests/_utils.py lines 193–198

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

Domain

Subdomains

Defined In

Calls

Source

Frequently Asked Questions

What does on_tool_start() do?
on_tool_start() is a function in the langchain codebase, defined in libs/partners/anthropic/tests/unit_tests/_utils.py.
Where is on_tool_start() defined?
on_tool_start() is defined in libs/partners/anthropic/tests/unit_tests/_utils.py at line 193.
What does on_tool_start() call?
on_tool_start() calls 1 function(s): on_tool_start_common.

Analyze Your Own Codebase

Get architecture documentation, dependency graphs, and domain analysis for your codebase in minutes.

Try Supermodel Free