Building a Remote MCP Server on Cloudflare (Without Auth)

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

This is a reference implementation that shows how to deploy an MCP (Model Context Protocol) server on Cloudflare Workers without requiring authentication. It is intended for developers who want to quickly set up a remote MCP server accessible via SSE (Server-Sent Events).

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

Clone the repository, install dependencies with pnpm install, then deploy using pnpm run deploy. The server becomes available at a URL like remote-mcp-server-authless.your-account.workers.dev/sse. For local testing, run npm run dev to access it at http://localhost:8787/sse. Connect to it from Cloudflare AI Playground or Claude Desktop using the provided configuration.

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

• Deploy a remote MCP server on Cloudflare Workers
• No authentication required for access
• Uses SSE (Server-Sent Events) transport
• Easy connection to Cloudflare AI Playground
• Works with Claude Desktop via mcp-remote tool
• Simple one-command deployment

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

• Quickly prototyping MCP tools without setting up authentication
• Integrating with Cloudflare AI Playground as a remote MCP client
• Testing MCP server interactions from Claude Desktop
• Demonstrating MCP server concepts in development environments

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

What does this server do?

It provides a remote MCP server deployed on Cloudflare Workers that exposes tools via SSE, with no authentication requirement. It is a starter example for building remote MCP servers.

What dependencies or runtime are required?

You need Node.js, pnpm, and a Cloudflare account. The server runs on Cloudflare Workers and uses the mcp-remote tool for connecting Claude Desktop.

Where does data live?

The server runs on Cloudflare’s global network. No persistent storage is mentioned; data flows through the SSE connection during tool calls.

What are the known limits?

The README does not specify limits, but the server is intended for development/demo use. No authentication means it should not be used in production.

What transport and authentication does it use?

Transport is SSE (Server-Sent Events) via a Cloudflare Worker. No authentication is configured.