> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes.

# webhookExpressions

> Add post-processing expressions for a webhook response.

[ref-datamap]: /docs/server-sdks/reference/typescript/agents/data-map

Add expressions that run after the most recently added webhook completes.
Allows conditional output based on the API response.

## **Parameters**

**`expressions`** `Record<string, unknown>[]` — required

List of expression definitions to evaluate against the webhook response.

---

## **Returns**

[`DataMap`][ref-datamap] -- Self for method chaining. Throws an `Error` if no webhook has been
added yet.

## **Example**

```typescript {5}
import { DataMap, FunctionResult } from '@signalwire/sdk';

const dm = new DataMap('check_status');
dm.webhook('GET', 'https://api.example.com/status');
dm.webhookExpressions([
  {
    string: '${response.status}',
    pattern: 'active',
    output: new FunctionResult('The account is active.').toDict(),
  },
]);
```

> Add post-processing expressions for a webhook response.