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PlanningState Class — langchain Architecture

Architecture documentation for the PlanningState class in todo.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  009b2b36_100b_8fd2_96c8_a7fd83917eba["PlanningState"]
  446b9f1c_796b_e509_22cc_36bc6d734792["todo.py"]
  009b2b36_100b_8fd2_96c8_a7fd83917eba -->|defined in| 446b9f1c_796b_e509_22cc_36bc6d734792

Relationship Graph

Source Code

libs/langchain_v1/langchain/agents/middleware/todo.py lines 39–47

class PlanningState(AgentState[ResponseT]):
    """State schema for the todo middleware.

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

    todos: Annotated[NotRequired[list[Todo]], OmitFromInput]
    """List of todo items for tracking task progress."""

Defined In

Source

Frequently Asked Questions

What is the PlanningState class?
PlanningState is a class in the langchain codebase, defined in libs/langchain_v1/langchain/agents/middleware/todo.py.
Where is PlanningState defined?
PlanningState is defined in libs/langchain_v1/langchain/agents/middleware/todo.py at line 39.

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