StateClaudeTextEditorMiddleware Class — langchain Architecture

Source Code

libs/partners/anthropic/langchain_anthropic/middleware/anthropic_tools.py lines 572–608

class StateClaudeTextEditorMiddleware(_StateClaudeFileToolMiddleware):
    """State-based text editor tool middleware.

    Provides Anthropic's `text_editor` tool using LangGraph state for storage.
    Files persist for the conversation thread.

    Example:
        ```python
        from langchain.agents import create_agent
        from langchain.agents.middleware import StateTextEditorToolMiddleware

        agent = create_agent(
            model=model,
            tools=[],
            middleware=[StateTextEditorToolMiddleware()],
        )
        ```
    """

    def __init__(
        self,
        *,
        allowed_path_prefixes: Sequence[str] | None = None,
    ) -> None:
        """Initialize the text editor middleware.

        Args:
            allowed_path_prefixes: Optional list of allowed path prefixes.

                If specified, only paths starting with these prefixes are allowed.
        """
        super().__init__(
            tool_type=TEXT_EDITOR_TOOL_TYPE,
            tool_name=TEXT_EDITOR_TOOL_NAME,
            state_key="text_editor_files",
            allowed_path_prefixes=allowed_path_prefixes,
        )