> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ondial.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Numbers

> Phone inventory stays in the dashboard.

Buy and assign numbers in the Ondial dashboard. Public API references them when:

* An outbound **campaign** (UI) binds a number for dials
* `POST /inbound-agents` uses `phoneNumber` / `phoneNumberId` you own