> ## Documentation Index
> Fetch the complete documentation index at: https://developers.telnyx.com/llms.txt
> Use this file to discover all available pages before exploring further.

# cancel()

> **cancel**(`runId`): `Promise`\<[`HarnessRun`](/docs/agent-sdk/harness-sdk/harness/get#harnessrun) | `undefined`>

**Parameters**

| Parameter | Type |
| - | - |
| `runId` | `string` |

**Returns**
`Promise`\<[`HarnessRun`](/docs/agent-sdk/harness-sdk/harness/get#harnessrun) | `undefined`>