# POST /voice-agents/blocklist

**Resource:** [Agents](./voice-agents.md)  
**MCP tool:** `add_to_voice_call_blocklist`  
**Scopes:** `voice-agents:write`  
**Write operation:** yes

Stop placing AI voice calls to a number. Takes effect on the next call attempt, across every dispatch path. Idempotent: re-adding an existing number updates its reason.

## Parameters

| Name | In | Type | Required | Description |
|------|----|------|----------|-------------|
| `phone` | body | string | yes | The number to stop calling, ideally E.164 (e.g. "+61431377068"). AU local form ("0431377068") also matches at dial time. Adding a number already on the list updates its reason instead of creating a duplicate. |
| `reason` | body | string | no | Why this number is on the list, shown in the workspace. In-call opt-outs record "Caller asked to be removed during a call". |
| `require_approval` | body | boolean | no | Optional. Set true to route this write into the approval queue for human review instead of executing it immediately (returns 202 + an approval_id). Works even when your key/token has permission to execute directly. |

## Request example

```bash
curl -X POST   "https://api.trustpager.com/functions/v1/api/v1/voice-agents/blocklist"   -H "Authorization: Bearer YOUR_API_KEY"   -H "Content-Type: application/json"   -d '{"phone":"...","reason":"...","require_approval":"..."}'
```

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