pause_dag
Pause an Apache Airflow DAG by its ID to temporarily halt scheduled executions and task processing for maintenance or troubleshooting.
Instructions
Pause a DAG by ID
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| dag_id | Yes |
Implementation Reference
- src/airflow/dag.py:108-111 (handler)The pause_dag tool handler function that pauses the specified DAG by setting is_paused=True via the Airflow DAG API and returns the response.async def pause_dag(dag_id: str) -> List[Union[types.TextContent, types.ImageContent, types.EmbeddedResource]]: dag = DAG(is_paused=True) response = dag_api.patch_dag(dag_id=dag_id, dag=dag, update_mask=["is_paused"]) return [types.TextContent(type="text", text=str(response.to_dict()))]
- src/airflow/dag.py:15-33 (registration)The get_all_functions in dag.py includes the registration tuple for pause_dag, which is imported and used in main.py to register the tool.def get_all_functions() -> list[tuple[Callable, str, str, bool]]: """Return list of (function, name, description, is_read_only) tuples for registration.""" return [ (get_dags, "fetch_dags", "Fetch all DAGs", True), (get_dag, "get_dag", "Get a DAG by ID", True), (get_dag_details, "get_dag_details", "Get a simplified representation of DAG", True), (get_dag_source, "get_dag_source", "Get a source code", True), (pause_dag, "pause_dag", "Pause a DAG by ID", False), (unpause_dag, "unpause_dag", "Unpause a DAG by ID", False), (get_dag_tasks, "get_dag_tasks", "Get tasks for DAG", True), (get_task, "get_task", "Get a task by ID", True), (get_tasks, "get_tasks", "Get tasks for DAG", True), (patch_dag, "patch_dag", "Update a DAG", False), (patch_dags, "patch_dags", "Update multiple DAGs", False), (delete_dag, "delete_dag", "Delete a DAG", False), (clear_task_instances, "clear_task_instances", "Clear a set of task instances", False), (set_task_instances_state, "set_task_instances_state", "Set a state of task instances", False), (reparse_dag_file, "reparse_dag_file", "Request re-parsing of a DAG file", False), ]
- src/main.py:95-97 (registration)The main registration loop in src/main.py that adds all tools from dag module's get_all_functions, including pause_dag, to the MCP app.for func, name, description, *_ in functions: app.add_tool(Tool.from_function(func, name=name, description=description))