Before you make your first API call, you need an API key.
- Create a free account →
- Go to API Keys and click Create API key
- Copy the key — it starts with
oi_sk_ - Use it as
Authorization: Bearer <api_key>on every request
What is OneInbox?
OneInbox is a voice orchestration platform for building AI agents that handle live voice conversations — over the phone and in the browser. You configure agents, voices, and call behavior through the REST API. OneInbox handles real-time audio, speech recognition, telephony routing, and scaling.What you can build
| Use case | How |
|---|---|
| Outbound calling bot | Agent dials leads, qualifies them, books demos |
| Inbound support line | Assign a phone number — callers reach your agent 24/7 |
How a call works
Caller speaks → transcribed to text → LLM decides reply → spoken back to caller. OneInbox runs this loop in real time. → How it worksGet started
Quickstart
Agent + web call in two API calls (~5 min)
End-to-end walkthrough
Full outbound calling bot — agent, tools, phone number, call, results
API reference
Every endpoint with interactive Try It examples
Authentication
Get your API key and start making requests