mcpField
B
Building a Remote MCP Server on Cloudflare (Without Auth)

Building a Remote MCP Server on Cloudflare (Without Auth)

Local
github.com/irvinebroqueDeveloper Tools0Updated 78w ago
Repository

About Building a Remote MCP Server on Cloudflare (Without Auth)

This Cloudflare example provides a starting point for deploying an unauthenticated remote MCP server on Cloudflare Workers. It is for developers who want to add their own tools and connect to the server from MCP clients.

Key features

  1. 01Deploy a remote MCP server on Cloudflare Workers
  2. 02Create a local project from the provided template
  3. 03Define tools in the server initialization method
  4. 04Connect through Cloudflare AI Playground

Use cases

  1. 01Prototype a remote MCP server without authentication
  2. 02Start a Workers project from the template
  3. 03Add custom tools to an MCP server
  4. 04Test tools from Cloudflare AI Playground

MCP support

The example deploys an unauthenticated MCP server with an SSE endpoint. MCP clients can connect directly or use the documented mcp-remote proxy for Claude Desktop.

#remote-mcp#cloudflare#server

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

No install method listed yet

We haven’t collected a package or remote endpoint for this server. Follow the instructions in the project README.

Repository

Tools

No tool list yet

Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.

Details

From the project README

Building a Remote MCP Server on Cloudflare (Without Auth)

This example allows you to deploy a remote MCP server that doesn't require authentication on Cloudflare Workers.

Get started:

Deploy to Workers

This will deploy your MCP server to a URL like: remote-mcp-server-authless.<your-account>.workers.dev/sse

Alternatively, you can use the command line below to get the remote MCP Server created on your local machine:

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

Customizing your MCP Server

To add your own tools to the MCP server, define each tool inside the init() method of src/index.ts using this.server.tool(...).

Connect to Cloudflare AI Playground

You can connect to your MCP server from the Cloudflare AI Playground, which is a remote MCP client:

  1. Go to https://playground.ai.cloudflare.com/
  2. Enter your deployed MCP server URL (remote-mcp-server-authless.<your-account>.workers.dev/sse)
  3. You can now use your MCP tools directly from the playground!

Connect Claude Desktop to your MCP server

You can also connect to your remote MCP server from local MCP clients, by using the mcp-remote proxy.

To connect to your MCP server from Claude Desktop, follow Anthropic's Quickstart and within Claude Desktop go to Settings > Developer > Edit Config.

Update with this configuration:

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

Restart Claude and you should see the tools become available.

Comments

Markdown supported

New to MCP?

From what the protocol is to installing your first server, these answers cover most first questions.

An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.