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

# API Keys

> Use an API key to access Aion from external clients.

API keys let you connect to Aion from tools outside the web app, such as API
clients, scripts, or local development environments.

<img src="https://mintcdn.com/terminalresearch/1cMeneG4lNwBEj10/assets/other/apikeys.png?fit=max&auto=format&n=1cMeneG4lNwBEj10&q=85&s=9e927ec5ece1d56d3a74ed362cfc38be" alt="Aion API Keys page" width="1115" height="706" data-path="assets/other/apikeys.png" />

## Creating an API key

In the Aion app, open your user menu and choose **API Keys**. Create a new key
from that page, then copy it when it is shown. For your security, you may not
be able to view the full key again later.

## What an API key can access

An API key acts as you. It inherits your user permissions, so it can access the
same Aion resources that your account can access.

However, only certain Aion services allow bearer-token authentication:

* Call model endpoints from external clients
* Invoke Aion-hosted or proxied MCP servers
* Send authenticated A2A requests to agents

Keep API keys private. If a key is exposed or no longer needed, revoke it from
the API Keys page.