# POST /phone/numbers/:phone_number_id/release

**Resource:** [Phone](./phone.md)  
**MCP tool:** `release_phone_number`  
**Scopes:** `phone:write`  
**Write operation:** yes

Release a phone number (stops billing).

## Parameters

| Name | In | Type | Required | Description |
|------|----|------|----------|-------------|
| `phone_number_id` | path | string | yes |  |

## Request example

```bash
curl -X POST   "https://api.trustpager.com/functions/v1/api/v1/phone/numbers/:phone_number_id/release"   -H "Authorization: Bearer YOUR_API_KEY"
```

---
Base URL: `https://api.trustpager.com/functions/v1/api/v1` — Auth: `Authorization: Bearer YOUR_API_KEY`