Building a Remote MCP Server on Cloudflare (Without Auth)

@bsmarch

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

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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 does not require authentication on Cloudflare Workers. It is intended for developers who want a quick, no‑auth MCP server integrated with Cloudflare’s infrastructure.

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

Deploy by clicking the “Deploy to Workers” button or by running npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. Customize tools inside the init() method of src/index.ts using this.server.tool(...). Connect to the server from Cloudflare AI Playground or from Claude Desktop via the mcp-remote proxy.

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

Deploy a remote MCP server without authentication
Runs on Cloudflare Workers
Add custom tools using this.server.tool(...)
Connect to Cloudflare AI Playground
Connect to Claude Desktop via mcp-remote proxy

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

Prototyping an MCP server without setting up authentication
Providing remote MCP tools to the Cloudflare AI Playground
Connecting a remote MCP server to local clients like Claude Desktop
Quickly sharing tools with a team using a public URL

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

How do I deploy the server?

Click the “Deploy to Workers” button in the README, or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless on the command line.

How do I add custom tools?

Inside src/index.ts, define each tool inside the init() method using this.server.tool(...).

How do I connect to 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 use the tools directly.

How do I connect to Claude Desktop?

Install the mcp-remote npm package, then add a configuration entry in Claude Desktop’s settings pointing to your server’s SSE endpoint (e.g., http://localhost:8787/sse or the remote URL).

Does the server require authentication?

No, this server is explicitly designed to be deployed without authentication.

Frequently asked questions

How do I deploy the server?

Click the “Deploy to Workers” button in the README, or run `npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless` on the command line.

How do I add custom tools?

Inside `src/index.ts`, define each tool inside the `init()` method using `this.server.tool(...)`.

How do I connect to 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 use the tools directly.

How do I connect to Claude Desktop?

Install the `mcp-remote` npm package, then add a configuration entry in Claude Desktop’s settings pointing to your server’s SSE endpoint (e.g., `http://localhost:8787/sse` or the remote URL).

Does the server require authentication?

No, this server is explicitly designed to be deployed without authentication.

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