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Building a Remote MCP Server on Cloudflare (Without Auth)

@elizabethsiegle

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Developer Tools

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elizabethsiegle

About Building a Remote MCP Server on Cloudflare

No overview available yet

#mcp-server#cloudflare#remote-server

Building a Remote MCP Server on Cloudflare config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "calculator": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "http://localhost:8787/sse"
      ]
    }
  }
}

Building a Remote MCP Server on Cloudflare tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

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 server allows you to deploy a remote MCP server that does not require authentication on Cloudflare Workers. It is intended for developers who want to expose MCP tools over SSE without adding authentication.

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

Deploy using the Cloudflare Deploy to Workers button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless from the command line. After deployment, the server is available at a URL like remote-mcp-server-authless.<your-account>.workers.dev/sse. Customize tools by editing src/index.ts inside the init() method using this.server.tool(...).

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

  • Deploys a remote MCP server with no authentication required.
  • Hosted on Cloudflare Workers for global edge performance.
  • Supports SSE (Server-Sent Events) transport.
  • Easily customizable by adding your own tools in src/index.ts.
  • Connects to Cloudflare AI Playground as a remote MCP client.
  • Works with Claude Desktop via the mcp-remote proxy.

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

  • Exposing MCP tools to Cloudflare AI Playground for testing and demos.
  • Connecting MCP tools to local desktop clients like Claude Desktop without local server setup.
  • Rapid prototyping of MCP toolchains without managing authentication infrastructure.

Frequently asked questions

1

Does this server require any authentication?

No, the server is specifically designed to not require authentication. It is “authless.”

2

How do I deploy this MCP server?

You can deploy it instantly using the “Deploy to Workers” button in the README, or by running `npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless` locally.

3

How can I add custom tools to the server?

Define each tool inside the `init()` method of `src/index.ts` using `this.server.tool(...)`. Use the Cloudflare Tools documentation for guidance.

4

How do I connect the server to a remote MCP client like 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 the tools become available.

5

Can I use this server with Claude Desktop?

Yes, by using the `mcp-remote` proxy (package `mcp-remote`). Configure Claude Desktop’s MCP settings to run `npx mcp-remote <your-server-url>/sse`.

Comments

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