Building a Remote MCP Server on Cloudflare (Without Auth)

@shlomobamberger

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

No overview available yet

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

Fetch the live tool list by running this server in a temporary sandbox using the button above.

Overview

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

This template lets you deploy a remote MCP (Model Context Protocol) server on Cloudflare Workers that does not require authentication. It is aimed at developers who want to quickly set up a server with custom tools accessible from remote MCP clients like the Cloudflare AI Playground or local applications via a proxy.

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 in your terminal. Customize tools inside the init() method of src/index.ts using this.server.tool(...). Connect to the Cloudflare AI Playground by entering the deployed SSE URL, or connect Claude Desktop by configuring a mcp-remote proxy in claude_desktop_config.json.

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

Deployable with one click or a CLI command.
No authentication required for remote access.
Custom tools defined via the this.server.tool() method.
Uses SSE transport on Cloudflare Workers.
Works with Cloudflare AI Playground as a remote client.
Local clients can connect using the mcp-remote proxy.

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

Deploy a remote MCP server for AI assistants without setting up auth.
Build and test custom tools accessible from the Cloudflare AI Playground.
Connect Claude Desktop to a remote MCP server through a local proxy.
Rapid prototyping of MCP‑based tools in a serverless environment.

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

How do I deploy the 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 by calling this.server.tool(...).

How do I connect to Cloudflare AI Playground?

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

How do I connect Claude Desktop?

Install the mcp-remote npm package and configure Claude Desktop’s claude_desktop_config.json to use npx mcp-remote <your-sse-url>.

Does the server require authentication?

No, this example is explicitly designed without authentication to simplify deployment and testing.

Frequently asked questions

How do I deploy the 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` by calling `this.server.tool(...)`.

How do I connect to Cloudflare AI Playground?

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

How do I connect Claude Desktop?

Install the `mcp-remote` npm package and configure Claude Desktop’s `claude_desktop_config.json` to use `npx mcp-remote <your-sse-url>`.

Does the server require authentication?

No, this example is explicitly designed without authentication to simplify deployment and testing.

Comments

Basic information

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