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

# Slack (MCP)

> Connect AI tools to Slack via the Model Context Protocol (MCP)

## 🚀 Quickstart

Connect to the Slack MCP server with Nango and call MCP tools in minutes. Slack MCP uses OAuth 2.0 with **static client registration**.

**1. Create the integration**

In Nango ([free signup](https://app.nango.dev)), go to [Integrations](https://app.nango.dev/dev/integrations) -> *Configure New Integration* -> *Slack (MCP)*.

**2. Authorize Slack**

Go to [Connections](https://app.nango.dev/dev/connections) -> *Add Test Connection* -> *Authorize*, then log in to Slack and approve the requested scopes. Later, you'll let your users do the same directly from your app.

**3. Call a Slack MCP tool**

Make your first MCP request (initialize handshake). Replace the placeholders below with your [Environment API key](https://nango.dev/docs/reference/backend/http-api/api-keys.md), [integration ID](https://app.nango.dev/dev/integrations), and [connection ID](https://app.nango.dev/dev/connections):

> [tab] cURL
>
> ```bash theme={null}
> curl "https://api.nango.dev/proxy/mcp" \
>   -X POST \
>   -H "Authorization: Bearer <NANGO-API-KEY>" \
>   -H "Provider-Config-Key: <INTEGRATION-ID>" \
>   -H "Connection-Id: <CONNECTION-ID>" \
>   -H "Content-Type: application/json" \
>   -d '{
>     "jsonrpc": "2.0",
>     "id": 1,
>     "method": "initialize",
>     "params": {
>         "protocolVersion": "2025-06-18",
>         "capabilities": {},
>         "clientInfo": {
>             "name": "nango-client",
>             "version": "1.0.0"
>         }
>     }
> }'
> ```

> [tab] Node
>
> Install Nango's backend SDK with `npm i @nangohq/node`. Then run:
>
> ```typescript theme={null}
> import { Nango } from '@nangohq/node';
>
> const nango = new Nango({ apiKey: '<NANGO-API-KEY>' });
>
> const res = await nango.post({
>     endpoint: '/mcp',
>     providerConfigKey: '<INTEGRATION-ID>',
>     connectionId: '<CONNECTION-ID>',
>     body: {
>         jsonrpc: '2.0',
>         id: 1,
>         method: 'initialize',
>         params: {
>             protocolVersion: '2025-06-18',
>             capabilities: {},
>             clientInfo: {
>                 name: 'nango-client',
>                 version: '1.0.0'
>             }
>         }
>     }
> });
>
> console.log(res.data);
> ```

✅ You're connected! Check the [Logs](https://app.nango.dev/dev/logs) tab in Nango to inspect requests.

**4. Implement Nango in your app**

Follow our [Auth implementation guide](https://nango.dev/docs/guides/primitives/auth.md) to integrate Nango in your app.

To obtain your own credentials, follow the setup guide linked below.

## 📚 Slack (MCP) Integration Guides

* [How to register your own Slack MCP OAuth app](https://nango.dev/docs/api-integrations/slack-mcp/how-to-register-your-own-slack-mcp-oauth-app)\
  Create or reuse a Slack app and configure it for MCP (user tokens, redirect URL, scopes).

Official docs: [Slack MCP server](https://slack.com/help/articles/17388188499099-Use-the-Slack-MCP-server) · [Slack API OAuth](https://api.slack.com/authentication/oauth-v2)

***


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