# Moose / Workflows / Cancel Workflow Documentation – TypeScript

## Included Files
1. moose/workflows/cancel-workflow/cancel-workflow.mdx

## cancel-workflow

Source: moose/workflows/cancel-workflow/cancel-workflow.mdx

# Cancel a Running Workflow

To stop a workflow before it has finished running, use the `workflow cancel` command.

```bash filename="Terminal" copy
moose workflow cancel <workflow-name>
```

### Implementing Cancelation Callbacks

For workflows that are running and have clean up operations to perform, you can implement a termination callback.

This is especially useful for any long running tasks that have open connections or subscriptions to other services that need to be closed. 
You may also use the `state` within the run/cancel context to supplement your business logic.

```typescript filename="workflows/workflows.ts" copy

const task1 = new Task<Foo, void>({
  name: "task1",
  run: async (ctx) => {
    connection.open();
  },
  onCancel: async (ctx) => {
    // Clean up any resources
    connection.close();
  },
});

const myworkflow = new Workflow({
  name: "myworkflow",
  startingTask: task1,
  retries: 3,
});
```