langchain Architecture Docs
Home / Class/ ToolCallLimitState Class — langchain Architecture

ToolCallLimitState Class — langchain Architecture

Architecture documentation for the ToolCallLimitState class in tool_call_limit.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  0c03aa0c_b7f2_82d5_07ef_07353ec548f1["ToolCallLimitState"]
  4eaf9f24_fce9_0af1_80e1_f2e4f9935aeb["tool_call_limit.py"]
  0c03aa0c_b7f2_82d5_07ef_07353ec548f1 -->|defined in| 4eaf9f24_fce9_0af1_80e1_f2e4f9935aeb

Relationship Graph

Source Code

libs/langchain_v1/langchain/agents/middleware/tool_call_limit.py lines 35–49

class ToolCallLimitState(AgentState[ResponseT]):
    """State schema for `ToolCallLimitMiddleware`.

    Extends `AgentState` with tool call tracking fields.

    The count fields are dictionaries mapping tool names to execution counts. This
    allows multiple middleware instances to track different tools independently. The
    special key `'__all__'` is used for tracking all tool calls globally.

    Type Parameters:
        ResponseT: The type of the structured response. Defaults to `Any`.
    """

    thread_tool_call_count: NotRequired[Annotated[dict[str, int], PrivateStateAttr]]
    run_tool_call_count: NotRequired[Annotated[dict[str, int], UntrackedValue, PrivateStateAttr]]

Defined In

Source

Frequently Asked Questions

What is the ToolCallLimitState class?
ToolCallLimitState is a class in the langchain codebase, defined in libs/langchain_v1/langchain/agents/middleware/tool_call_limit.py.
Where is ToolCallLimitState defined?
ToolCallLimitState is defined in libs/langchain_v1/langchain/agents/middleware/tool_call_limit.py at line 35.

Analyze Your Own Codebase

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

Try Supermodel Free