mixcloud-mcp 0.3.1

FastMCP server bridging the Mixcloud API

mixcloud-mcp

A FastMCP server that bridges the Mixcloud API to AI assistants via the Model Context Protocol (MCP).

Ask Claude to search for mixes, look up artists, browse uploads, and upload recordings directly to Mixcloud — all from the conversation.

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Tools

Tool	Description
search_cloudcasts	Search Mixcloud for mixes by keyword
get_cloudcast	Get details of a specific mix by its key
get_user	Get a user's profile
get_user_cloudcasts	List a user's uploaded mixes
get_user_followers	List a user's followers
get_user_following	List who a user follows
upload_cloudcast	Upload a recording to Mixcloud (opens a file picker UI)

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Quickstart — stdio (Claude Desktop, local)

No install needed. Add to your claude_desktop_config.json and restart:

Mac: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "mixcloud": {
      "command": "/path/to/uvx",
      "args": ["mixcloud-mcp"]
    }
  }
}

Tip: Claude Desktop doesn't inherit your shell PATH, so uvx must be a full path. Run which uvx in your terminal to find it — typically /Users/yourname/.local/bin/uvx.

Public read-only tools (search, get user, etc.) work immediately without any credentials.

To enable uploads and authenticated API calls, add your Mixcloud OAuth app credentials. The server will print an authorize URL to stderr on first start — visit it in your browser once and your token is saved automatically.

{
  "mcpServers": {
    "mixcloud": {
      "command": "/path/to/uvx",
      "args": ["mixcloud-mcp"],
      "env": {
        "MIXCLOUD_CLIENT_ID": "<your client id>",
        "MIXCLOUD_CLIENT_SECRET": "<your client secret>"
      }
    }
  }
}

Get your credentials at mixcloud.com/developers. Register http://localhost:4000/oauth/callback as the redirect URI in your Mixcloud app.

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Quickstart — HTTP (hosted server, remote MCP clients)

The HTTP transport exposes the server over the network so remote MCP clients (Claude.ai, Claude Desktop configured with a URL) can connect to it.

1. Register a Mixcloud OAuth app

Go to mixcloud.com/developers and create an app. You will get a Client ID and Client Secret.

Set the redirect URI to your server's public URL plus /oauth/callback:

https://your-server.example.com/oauth/callback

If you are running locally with ngrok, use your ngrok URL instead (see step 3).

2. Configure your environment

Create a .env file (or set these as environment variables):

MIXCLOUD_CLIENT_ID=your_client_id
MIXCLOUD_CLIENT_SECRET=your_client_secret
MCP_PUBLIC_URL=https://your-server.example.com   # public HTTPS URL — no port, no trailing slash
MCP_API_KEY=your_secret_key                       # protects the MCP endpoint; generate with mixcloud-mcp-keygen

MCP_PUBLIC_URL is required. It must be HTTPS and match the domain you registered as the redirect URI in your Mixcloud app. If you are running locally via ngrok, this is your ngrok URL (e.g. https://xxxx.ngrok-free.app). Do not include a port number — ngrok handles port mapping for you.

Optional: if you already have a Mixcloud access token, set MIXCLOUD_ACCESS_TOKEN and skip step 4.

3. Start the server

uvx mixcloud-mcp-http

On startup you will see a line like:

[http] No Mixcloud token — visit https://your-server.example.com/oauth/authorize to enable uploads.

If you are running locally, expose the server first with ngrok:

ngrok http 8000

Use the ngrok HTTPS URL as MCP_PUBLIC_URL and make sure the same URL is registered as the redirect URI in your Mixcloud app.

4. Authenticate with Mixcloud

Open https://your-server.example.com/oauth/authorize in your browser and approve access. The server logs:

[http] Mixcloud token stored — upload tool is now authenticated.

The token is held in memory for the lifetime of the process. To persist it across restarts, copy the token into MIXCLOUD_ACCESS_TOKEN in your .env.

5. Add the connector in Claude

In Claude, go to Settings → Connectors → Add custom connector and enter:

https://your-server.example.com/mcp

The URL must end in /mcp. The base URL alone will not work.

Read-only tools (search, browse, get user) are available immediately. The upload tool becomes available once you have authenticated with Mixcloud in step 4.

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Environment variables

Both transports

Variable	Default	Description
MIXCLOUD_CLIENT_ID	—	Mixcloud OAuth app client ID. Required for OAuth auth and uploads.
MIXCLOUD_CLIENT_SECRET	—	Mixcloud OAuth app client secret. Required for OAuth auth and uploads.
MIXCLOUD_ACCESS_TOKEN	—	Direct Mixcloud token. Alternative to OAuth — set manually or via mixcloud-mcp-oauth.

stdio only

Variable	Default	Description
UPLOAD_PORT	4000	Port for the sidecar HTTP server (handles uploads and the OAuth callback).

HTTP only

Variable	Default	Description
MCP_API_KEY	—	Bearer token protecting the MCP endpoint. Generate with mixcloud-mcp-keygen.
MCP_PORT	8000	HTTP server port.
MCP_PUBLIC_URL	http://localhost:<MCP_PORT>	Public base URL of the server. Required for browser OAuth — Mixcloud redirects back to <MCP_PUBLIC_URL>/oauth/callback.
CORS_ORIGIN	*	Allowed CORS origin for the upload endpoint. Lock this down in production.
DISABLE_AUTH	—	Set to true to skip auth — local dev only, never in production.

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How authentication works

stdio — sidecar OAuth

When MIXCLOUD_CLIENT_ID and MIXCLOUD_CLIENT_SECRET are set, the server starts a lightweight sidecar HTTP server (on UPLOAD_PORT, default 4000) before the MCP process starts. On first run, if no token is present, it prints:

[mixcloud-mcp] No Mixcloud token — visit http://localhost:4000/oauth/authorize to connect your account.

Visit that URL once in your browser, approve access on Mixcloud, and your token is written to .env and picked up immediately. You do not need to restart the server.

The sidecar also handles file uploads — the upload UI posts directly to http://localhost:4000/upload.

HTTP — server-level authentication

The HTTP server authenticates to Mixcloud once and shares that token across all connected MCP clients. There is no per-user token — whoever authenticates first sets the token for the lifetime of the process.

You can provide the token two ways (see the Quickstart above): pre-set MIXCLOUD_ACCESS_TOKEN in your environment, or visit /oauth/authorize in a browser after starting the server. In both cases the read-only tools are always available to any client that has the MCP_API_KEY; uploads become available once a Mixcloud token is present.

The redirect URI registered in your Mixcloud app must be <MCP_PUBLIC_URL>/oauth/callback.

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Future ideas

• Per-user sessions in HTTP mode — currently all MCP clients share a single Mixcloud token. A session layer would let each user authenticate independently and upload to their own Mixcloud account.

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Contributing

See CONTRIBUTING.md.

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License

GNU General Public License v3.0