# Quickstart

Four steps from zero to your first German phone number for your AI agent.

> Early access: these interfaces are documented as drafts. Confirm commands, packages and endpoints with us before use.

Source: https://trunkbeam.com/en/docs

TrunkBeam gives you German phone numbers for voice agents. You order and manage them from the terminal, through an MCP server or over a REST API. This page walks through the whole flow once.

## Requirements

- A company or registered business with an address in Germany. Local numbers need an address inside that area code, so a Berlin (030) number needs a Berlin address.
- Node.js 20 or newer for the CLI and MCP server.
- A voice stack that speaks SIP, for example Vapi, Retell AI, ElevenLabs, LiveKit, Pipecat or Asterisk.

## 1. Install the CLI

```bash
npm install -g @trunkbeam/cli
trunkbeam --version
```

## 2. Create an account

```bash
trunkbeam signup
```

The CLI asks for company name, legal form, address and contact person, then emails you a confirmation link. If you prefer clicking, sign up at `app.trunkbeam.com`. Details in [Account and verification](/en/docs/account).

## 3. Submit documents

```bash
trunkbeam verify --docs ./company-register.pdf
trunkbeam status
```

We confirm the review timeline during onboarding. The status then reads `approved`, or `rejected` with the reason and what is missing. You also get an email.

## 4. Buy a number and connect it

```bash
trunkbeam numbers search --area 030
trunkbeam numbers buy +493023125417 --sip sip:agent@voice.example
```

The CLI shows the price and asks before buying. From then on, calls to the number go to your agent.

## Next steps

- [Connect numbers to your voice stack](/en/docs/sip), including outbound calls
- [Call transfer via SIP REFER](/en/docs/transfer) when a person should take over
- [Set up the MCP server](/en/docs/mcp) for Claude Code, Codex and Cursor