Remote MCP Server Authless

You can run a remote MCP (Multi-Client Protocol) server on Cloudflare Workers that serves tools to clients without requiring authentication. This makes it easy to expose your custom MCP tools for exploration, testing, or lightweight automation from anywhere, while keeping the server logic centralized and accessible through a simple HTTP(S) endpoint.

How to use

Connect to your remote MCP server from any compatible MCP client to start using your tools. You can access and run tools that you defined in your server, query responses, and orchestrate tool workflows across sessions. Two practical ways to connect are via a hosted playground client and a local desktop client.

How to install

Prerequisites you need before installing: Node.js (with npm) installed on your machine.

Install and scaffold your remote MCP server using the following command. It creates a Cloudflare-based MCP server template ready for deployment.

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

Additional setup and deployment options

Alternatively, you can deploy your remote MCP server directly to Cloudflare Workers from a web-based setup flow. This provides a public URL for your MCP server, following the same MCP interface and tooling.

Additional sections

Connect to the Cloudflare AI Playground to exercise your MCP server using a remote MCP client. Follow these steps:

1. Open the Playground at the AI Playground URL.

2. Enter your deployed MCP server URL: https://remote-mcp-server-authless.<your-account>.workers.dev/sse

3. Use your MCP tools directly from the playground to test tool execution and responses.

Connect Claude Desktop to your MCP server

You can also connect to your remote MCP server from Claude Desktop by using the mcp-remote proxy. Update Claude Desktop configuration to point to your MCP server.

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