Building a Remote MCP Server on Cloudflare (Without Auth)

@StevenConnors

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

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#remote-mcp #cloudflare #server

Config

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Overview

What is 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. It is intended for developers who want to host MCP tools on a remote server accessible via SSE, without a full authentication system.

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

Deploy via the “Deploy to Workers” button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. Add custom tools in src/index.ts using this.server.tool(...). Connect clients such as Cloudflare AI Playground or Claude Desktop (via the mcp-remote proxy) to the deployed SSE URL.

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

No authentication required for the MCP server
Deploy quickly on Cloudflare Workers
Uses SSE (Server‑Sent Events) transport
Easily add custom tools in src/index.ts
Integrates with Cloudflare AI Playground and Claude Desktop

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

Host a remote MCP server for the Cloudflare AI Playground
Connect Claude Desktop to a remote MCP server via the mcp-remote proxy
Create a public MCP server without building a full authentication system

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

How do I deploy the MCP server?

Use the “Deploy to Workers” button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless.

How do I add custom tools?

Define each tool inside the init() method of src/index.ts using this.server.tool(...).

How do I connect from 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).

How do I connect from Claude Desktop?

Use the mcp-remote proxy and configure Claude Desktop’s mcpServers setting with the command npx mcp-remote <server-url>.

What transport does the server use?

The server exposes an SSE endpoint at /sse.

Frequently asked questions

How do I deploy the MCP server?

Use the “Deploy to Workers” button or run `npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless`.

How do I add custom tools?

Define each tool inside the `init()` method of `src/index.ts` using `this.server.tool(...)`.

How do I connect from 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`).

How do I connect from Claude Desktop?

Use the mcp-remote proxy and configure Claude Desktop’s `mcpServers` setting with the command `npx mcp-remote <server-url>`.

What transport does the server use?

The server exposes an SSE endpoint at `/sse`.

Comments

Basic information

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