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Building a Remote MCP Server on Cloudflare (Without Auth)

@elizabethsiegle

Repository

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

No overview available yet

#mcp-server#cloudflare#remote-server

Basic information

Category

Developer Tools

Transports

stdio

Publisher

elizabethsiegle

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "calculator": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "http://localhost:8787/sse"
      ]
    }
  }
}

Tools

No tools detected

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is Building a Remote MCP Server on Cloudflare (Without Auth)?

This server allows you to deploy a remote MCP server that does not require authentication on Cloudflare Workers. It is intended for developers who want to expose MCP tools over SSE without adding authentication.

How to use Building a Remote MCP Server on Cloudflare (Without Auth)?

Deploy using the Cloudflare Deploy to Workers button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless from the command line. After deployment, the server is available at a URL like remote-mcp-server-authless.<your-account>.workers.dev/sse. Customize tools by editing src/index.ts inside the init() method using this.server.tool(...).

Key features of Building a Remote MCP Server on Cloudflare (Without Auth)

  • Deploys a remote MCP server with no authentication required.
  • Hosted on Cloudflare Workers for global edge performance.
  • Supports SSE (Server-Sent Events) transport.
  • Easily customizable by adding your own tools in src/index.ts.
  • Connects to Cloudflare AI Playground as a remote MCP client.
  • Works with Claude Desktop via the mcp-remote proxy.

Use cases of Building a Remote MCP Server on Cloudflare (Without Auth)

  • Exposing MCP tools to Cloudflare AI Playground for testing and demos.
  • Connecting MCP tools to local desktop clients like Claude Desktop without local server setup.
  • Rapid prototyping of MCP toolchains without managing authentication infrastructure.

FAQ from Building a Remote MCP Server on Cloudflare (Without Auth)

Does this server require any authentication?

No, the server is specifically designed to not require authentication. It is “authless.”

How do I deploy this MCP server?

You can deploy it instantly using the “Deploy to Workers” button in the README, or by running npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless locally.

How can I add custom tools to the server?

Define each tool inside the init() method of src/index.ts using this.server.tool(...). Use the Cloudflare Tools documentation for guidance.

How do I connect the server to a remote MCP client like Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your deployed MCP server URL (e.g., remote-mcp-server-authless.<your-account>.workers.dev/sse), and the tools become available.

Can I use this server with Claude Desktop?

Yes, by using the mcp-remote proxy (package mcp-remote). Configure Claude Desktop’s MCP settings to run npx mcp-remote <your-server-url>/sse.

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