# POST /voice-agents/:agent_id/outbound-config

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

Enable OUTBOUND dialling for a voice agent. Set default_phone_number_id to an imported number: that number becomes the caller ID and is all outbound needs (each call passes the agent itself, so no number-level binding is required and ONE number can be the default for many agents). Do NOT use update_phone_number to bind the number to the agent for outbound; that binding is inbound-only. Per-agent, no website required.

## Parameters

| Name | In | Type | Required | Description |
|------|----|------|----------|-------------|
| `agent_id` | path | string | yes |  |
| `default_phone_number_id` | body | string | no |  |

## Request example

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

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