> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vobiz.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Quick Start – Make Your First Vobiz Call
> Set up Vobiz and make your first call in under 5 minutes - connect an AI voice agent via Vapi or Retell, configure a SIP trunk, or build a programmable XML IVR across 130+ countries.
## What are you building?
Vapi · Retell · LiveKit · ElevenLabs - \~5 min
Asterisk · FreeSWITCH · Cisco - \~10 min
Custom call flows + webhooks - \~5 min
Templates · campaigns · webhooks - \~15 min
**Using an AI platform?** Skip ahead to the dedicated guides for [Vapi](/integrations/vapi-dashboard), [Retell AI](/integrations/retellai-dashboard), [ElevenLabs](/integrations/elevenlabs-dashboard), or [LiveKit](/integrations/livekit).
## Core setup - 4 steps
Create your Vobiz account at the [registration page](https://console.vobiz.ai/app/register). You'll get ₹25 in free credit to explore the platform.
After signing in, you land on the main dashboard. Your API credentials - **Auth ID** and **Auth Token** - are displayed here. You'll need these in every API request.
Go to the **DID** section and purchase a number. Filter by region to find numbers in the country you need. The number is assigned to an inbound trunk in the next step. For a full walkthrough (console **and** API, fees, and India number series), see [Buy a phone number](/buy-a-phone-number).
### Outbound trunk (for placing calls)
In the **Trunks** sidebar section, click **Create** under Outbound Trunks. Give it a name, set the domain, then create a credential (username + password) for your platform to authenticate with.
### Inbound trunk (for receiving calls)
Under Inbound Trunks, link the phone number you purchased to a destination URI. This is the SIP address where Vobiz sends incoming calls - usually your AI platform's SIP URI.
In the **Voice** section, create an XML Application and set a webhook URL. Vobiz calls this URL when a call arrives, and your server responds with XML instructions. Then assign your phone number to the application.
Use the interactive [XML Builder](/xml-builder) to generate the XML your webhook should return without writing it by hand.
## After your first call
These sections help you monitor and debug - they're not part of the initial setup.
Records for XML app & API calls
Listen to and download call audio
Low-level SIP signaling details
Charges and credits on your account
## What developers usually do next
Route SIP directly into a Vapi AI agent - 3 min
Manage trunks programmatically via REST
Build custom IVR flows with XML verbs
How INVITE, RTP, and signaling actually work - 10 min read
## Build it with an AI agent
If you have Cursor, Claude Code, or another MCP-aware AI tool connected to `https://docs.vobiz.ai/mcp`, click below and the agent will scaffold your first outbound call.
Using the Vobiz MCP server at `https://docs.vobiz.ai/mcp`:
1. Use `search_vobiz` to find docs for "make a call".
2. Read the `vobiz-voice-calls` skill from `mintlify://skills/voice-calls`.
3. Generate a runnable curl command that places one outbound call:
* Ask me for `from` (a Vobiz number I own), `to` (E.164), and `answer_url` (HTTPS).
* Use POST `https://api.vobiz.ai/api/v1/Account/{auth_id}/Call/` with `X-Auth-ID` and `X-Auth-Token` placeholders for me to fill in.
4. Also generate the minimum valid VobizXML my `answer_url` should return - `Hello from Vobiz`.
5. Save the curl as `place-call.sh` and the XML as `answer.xml`.
6. Explain the path-casing rule: `/api/v1/Account/{auth_id}/Call/` (capital A, capital C, trailing slash). Lowercase `account` or no trailing slash returns 401.