Test Remote MCP Server Authless

You can run a remote MCP server on Cloudflare Workers that exposes tools over an HTTP SSE endpoint. You connect clients to this endpoint to perform actions with your tools, enabling lightweight, server-hosted capabilities for your workflows without managing authentication in the public surface. This guide walks you through using and setting up that remote MCP server and connecting common MCP clients to it.

How to use

Connect to your remote MCP server via an MCP client to access and run the available tools. Use the HTTP SSE endpoint to browse, invoke, and combine tools into workflows. You can use the Cloudflare Playground to experiment with your deployed server without installing anything locally, or configure a local MCP client to forward requests to the remote endpoint.

How to install

Prerequisites: ensure you have Node.js and npm installed on your machine.

1. Create your remote MCP server project using the Cloudflare starter template.

2. Deploy your MCP server to Cloudflare Workers as instructed by the starter tool.

3. Note the remote URL your server is deployed to; you will use this to connect clients.

Additional notes and examples

Customize your remote MCP server by adding tools in the init() method of the server code. You define each tool with your server’s tooling API, enabling your own domain-specific capabilities.

Connect from the Cloudflare AI Playground by supplying your deployed MCP server URL to the playground client. This allows you to exercise your tools directly in the browser without local setup.

If you want to use Claude Desktop or other MCP clients locally, you can configure the client to forward requests to your remote server. For Claude Desktop, add a configuration that points to the remote SSE endpoint provided by your deployment.

{
  "mcpServers": {
    "remote_authless": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://remote-mcp-server-authless.your-account.workers.dev/sse"
      ]
    }
  }
}