# POST /voice-agents/:agent_id/call

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

Initiate an outbound voice call via this agent.

## Parameters

| Name | In | Type | Required | Description |
|------|----|------|----------|-------------|
| `agent_id` | path | string | yes |  |
| `to_number` | body | string | yes |  |

## Request example

```bash
curl -X POST   "https://api.trustpager.com/functions/v1/api/v1/voice-agents/:agent_id/call"   -H "Authorization: Bearer YOUR_API_KEY"   -H "Content-Type: application/json"   -d '{"to_number":"..."}'
```

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