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

# App Integrations with API Router

> Connect third-party apps to Alter API Router

Use these guides when integrating external apps with Alter API Router.

## Integration guides

<CardGroup cols={2}>
  <Card title="TypingMind" icon="plug" href="/api-router/typingmind">
    Configure a custom OpenAI Chat Completions model in TypingMind using Alter endpoint and headers.
  </Card>

  <Card title="Msty.ai" icon="plug" href="/api-router/msty">
    Set Alter endpoint, API key, and model ID format in Msty.ai.
  </Card>

  <Card title="General Setup Pattern" icon="book-open" href="/api-router/api-gateway">
    Base URL, API key handling, and model ID format used by most OpenAI-compatible apps.
  </Card>
</CardGroup>

## Integration checklist

1. Set base URL to `https://alterhq.com/api` (or `/v1` if required)
2. Set auth header to `Authorization: Bearer YOUR_API_KEY`
3. Use model IDs in `Provider#Model-name` format
4. Run a model list call before first request

## Related

* [API Router Overview](/references/api-router-overview)
* [API Model Reference](/references/api-model-names)