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Building a Remote MCP Server on Cloudflare (Without Auth)

@zdburrage

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

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#mcp-server#cloudflare#remote-server

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Overview

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

This example deploys a remote MCP (Model Context Protocol) server on Cloudflare Workers without authentication. It is intended for developers who want a quick, no-frills remote MCP server to serve tools via Server-Sent Events (SSE).

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

Deploy by clicking the "Deploy to Workers" button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless in your terminal. Customize tools inside the init() method of src/index.ts using this.server.tool(...). Connect to Cloudflare AI Playground by entering your deployed URL (e.g., remote-mcp-server-authless.<account>.workers.dev/sse). Connect Claude Desktop by installing the mcp-remote proxy and adding the server configuration to Claude Desktop’s settings.

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

  • Deployed as a Cloudflare Worker (no authentication required)
  • Uses SSE (Server-Sent Events) transport
  • Easily customizable via this.server.tool() in src/index.ts
  • One-click deploy from the Cloudflare Workers dashboard
  • Compatible with remote MCP clients via mcp-remote proxy

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

  • Expose custom MCP tools to the Cloudflare AI Playground
  • Quickly test MCP tools without setting up local infrastructure
  • Connect to Claude Desktop or other local MCP clients through a remote proxy
  • Experiment with the Model Context Protocol on Cloudflare’s edge network

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

Does this MCP server require authentication?

No. This server is intentionally built without authentication for simplicity.

How do I deploy it?

Use the "Deploy to Workers" button or run the npm create cloudflare command shown in the README. Both methods create a new Cloudflare Worker with the MCP server template.

How do I connect to Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your deployed MCP server URL (ending in /sse), and the tools will be available in the playground.

How do I connect Claude Desktop?

Install the mcp-remote npm package. Then add a calculator (or custom name) entry to your Claude Desktop configuration with the command npx mcp-remote <your-server-url>/sse. Restart Claude.

What transport does the server use?

The server uses SSE (Server-Sent Events). The endpoint is <your-worker-url>/sse.

Frequently asked questions

Does this MCP server require authentication?

No. This server is intentionally built without authentication for simplicity.

How do I deploy it?

Use the "Deploy to Workers" button or run the `npm create cloudflare` command shown in the README. Both methods create a new Cloudflare Worker with the MCP server template.

How do I connect to Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your deployed MCP server URL (ending in `/sse`), and the tools will be available in the playground.

How do I connect Claude Desktop?

Install the `mcp-remote` npm package. Then add a `calculator` (or custom name) entry to your Claude Desktop configuration with the command `npx mcp-remote <your-server-url>/sse`. Restart Claude.

What transport does the server use?

The server uses SSE (Server-Sent Events). The endpoint is `<your-worker-url>/sse`.

Comments

Basic information

Category

Developer Tools

Transports

stdio

Author

zdburrage

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