langflow-ai/langflow · error · HTTPException

This endpoint is not available

Error message

This endpoint is not available

What it means

Error "This endpoint is not available" thrown in langflow-ai/langflow.

Source

Thrown at src/backend/base/langflow/api/v1/endpoints.py:903

        APIException: For internal execution errors (500)

    Notes:
        - Supports both streaming and non-streaming execution modes
        - Tracks execution time and success/failure via telemetry
        - Handles graceful client disconnection in streaming mode
        - Provides detailed error handling with appropriate HTTP status codes
        - Extracts global variables from HTTP headers with prefix X-LANGFLOW-GLOBAL-VAR-*
        - Merges extracted variables with the context parameter as "request_variables"
        - In streaming mode, uses EventManager to handle events:
            - "add_message": New messages during execution
            - "token": Individual tokens during streaming
            - "end": Final execution result
        - Authentication: Requires active session (cookies)
        - Feature Flag: Only available when agentic_experience is enabled
    """
    # Feature flag: Only allow access if agentic_experience is enabled
    if not get_settings_service().settings.agentic_experience:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="This endpoint is not available",
        )

    await ensure_flow_permission(
        api_key_user,
        FlowAction.EXECUTE,
        flow_id=flow.id,
        flow_user_id=flow.user_id,
        workspace_id=flow.workspace_id,
        folder_id=flow.folder_id,
    )
    return await _run_flow_internal(
        background_tasks=background_tasks,
        flow=flow,
        input_request=input_request,
        stream=stream,
        api_key_user=api_key_user,

View on GitHub (pinned to 976ec789d2)

Solutions

1. This endpoint is disabled in the current configuration; use the supported replacement endpoint documented in the API reference.

When it happens

Trigger: Occurs when a client calls an endpoint that has been disabled or is not available in the current server configuration or feature-flag state.

Common situations: See trigger scenarios.

AI-assisted analysis of langflow-ai/langflow@976ec789d2 (2026-08-14). Data as JSON: /api/errors/052906fbd0eaf0e1. Report an issue: GitHub.