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

# MCP

> Connect ChatGPT, Claude, and Gemini to Notifique — automatic OAuth on the Model Context Protocol.

<Tip>
  MCP is the **universal plug** for AI to call external tools. On Notifique, the assistant discovers OAuth on its own — you only provide the server URL.
</Tip>

## What is MCP on Notifique?

The **Model Context Protocol** lets ChatGPT, Claude Desktop, Gemini, and other assistants **send messages, list contacts**, and more — with explicit user permission.

MCP server:

```
https://mcp.notifique.dev/mcp
```

## How authentication works

1. Host calls MCP → gets `401` + `WWW-Authenticate`
2. Reads `/.well-known/oauth-protected-resource`
3. Registers client (DCR), opens **Notifique login** in the browser
4. Uses the access token on later calls

Feels like **Connect with Google** — the host runs the OAuth flow.

## OAuth or API key?

| Mode        | When                      |
| ----------- | ------------------------- |
| **OAuth**   | End user in the assistant |
| **API key** | Cursor, CI, scripts       |

## Next steps

* [OAuth Quick Start](/en/oauth-api/como-funciona/quick-start)
* [MCP integrations](/en/automations-api/como-funciona/integracoes-mcp)
* [Build with AI — MCP](/en/build-with-ai/mcp-notifique)