Remote

You can run a remote MCP server on Cloudflare Workers that serves tools to MCP clients without requiring authentication. This setup lets you deploy a server quickly, connect from the Cloudflare AI Playground or your own MCP clients, and customize the available tools from your code.

How to use

You will interact with the remote MCP server from an MCP client or a local proxy. Deploy the server, then connect your client to the provided URL or to a local proxy that forwards requests to the remote endpoint.

How to install

Prerequisites you need before starting:
- Node.js and npm installed on your machine
- Access to a terminal or command prompt
- Optional: Cloudflare account if you choose to deploy directly to Cloudflare Workers

Step 1: Deploy the MCP server to Cloudflare Workers using the provided deployment URL or CLI command.
- Deployment URL (interactive): open a browser and follow the deployment flow to host the MCP server at a URL like remote-mcp-server-authless.<your-account>.workers.dev/sse
- Deployment CLI: you can create the server with the following command from your terminal:

npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless

This command sets up the remote MCP server project configured for Cloudflare.

Additional sections

Customize the MCP server by adding your own tools inside your server’s initialization. In your source code, use the initialization method to register tools with the server, for example by calling this.server.tool(...) within the init() function.

Connect to the Cloudflare AI Playground to use your MCP server from a remote client. Steps:

1. Open the Cloudflare AI Playground at the designated URL
2. Enter your deployed MCP server URL, for example remote-mcp-server-authless.<your-account>.workers.dev/sse
3. Use your MCP tools directly from the playground interface

Connect Claude Desktop to your MCP server via the mcp-remote proxy. Update Claude Desktop configuration to include your MCP server as follows (example uses a placeholder for the local proxy or the remote endpoint):

{ "mcpServers": { "calculator": { "command": "npx", "args": [ "mcp-remote", "http://localhost:8787/sse" // or remote-mcp-server-authless.your-account.workers.dev/sse ] } } }

Restart Claude Desktop to reveal the tools.