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Building a Remote MCP Server on Cloudflare (Without Auth)

@John-Selvinraj

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

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#remote-mcp#cloudflare#server

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Overview

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

This example lets you deploy a remote MCP server that does not require authentication on Cloudflare Workers. It is intended for developers who want a quick way to host an MCP server accessible over SSE.

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

Deploy by clicking the "Deploy to Workers" button or running npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. 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 using this.server.tool(...) in the init() method.

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

  • Deploy a remote MCP server without authentication.
  • Uses Cloudflare Workers for serverless hosting.
  • Exposes an SSE endpoint at /sse.
  • Supports custom tool definitions via code.
  • Compatible with Cloudflare AI Playground and Claude Desktop.

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

  • Quickly stand up a remote MCP server for testing or prototyping.
  • Integrate MCP tools with Cloudflare AI Playground.
  • Connect Claude Desktop to a remote MCP server using the mcp-remote proxy.

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

How do I deploy the server?

Use the "Deploy to Workers" button on GitHub or run the npm create cloudflare@latest command with the provided template.

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 to Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your server URL (ending in /sse), and use your MCP tools directly.

How do I connect Claude Desktop to the server?

Install the mcp-remote proxy, then add a configuration entry in Claude Desktop pointing to your server’s SSE URL.

What is the deployed server URL format?

It follows the pattern remote-mcp-server-authless.<your-account>.workers.dev/sse.

Frequently asked questions

How do I deploy the server?

Use the "Deploy to Workers" button on GitHub or run the `npm create cloudflare@latest` command with the provided template.

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 to Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your server URL (ending in `/sse`), and use your MCP tools directly.

How do I connect Claude Desktop to the server?

Install the `mcp-remote` proxy, then add a configuration entry in Claude Desktop pointing to your server’s SSE URL.

What is the deployed server URL format?

It follows the pattern `remote-mcp-server-authless.<your-account>.workers.dev/sse`.

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Basic information

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Developer Tools

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Author

John-Selvinraj

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