Building a Remote MCP Server on Cloudflare (Without Auth)

@awpthorp

Repository

Basic information

About Building a Remote MCP Server on Cloudflare

No overview available yet

#remote-mcp-server #cloudflare #mcp-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 example allows you to deploy a remote MCP server that doesn’t require authentication on Cloudflare Workers. It is for developers who want a quick, serverless MCP endpoint with no auth overhead.

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

Deploy by clicking the “Deploy to Workers” button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. Customize tools by editing src/index.ts. Connect from Cloudflare AI Playground (enter your deployed URL) or from Claude Desktop using the mcp-remote proxy.

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

Deploys directly to Cloudflare Workers with no authentication.
Includes a one-click deploy button for fast setup.
Provides a template for custom MCP tools via this.server.tool(...).
Connects to Cloudflare AI Playground as a remote client.
Works with local MCP clients using the mcp-remote proxy.

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

Hosting a public MCP tool server for demos or internal use without auth complexity.
Integrating custom MCP tools with Cloudflare AI Playground.
Connecting remote MCP tools to Claude Desktop via a proxy.

Frequently asked questions

What prerequisites are needed?

You need a Cloudflare account and npm to run the `npm create cloudflare` command. No authentication is required for the MCP server itself.

How do I add my own tools?

Define each tool inside the `init()` method of `src/index.ts` using `this.server.tool(...)`. See Cloudflare’s tools documentation for details.

What is the deployed URL format?

The URL will be like `remote-mcp-server-authless.<your-account>.workers.dev/sse`.

How do I connect from Claude Desktop?

Use the `mcp-remote` npm package as a proxy. In Claude Desktop’s MCP configuration, set the command to `npx mcp-remote` with the server’s SSE URL as an argument.

Does this server support authentication?

No, this example explicitly deploys a remote MCP server without authentication.

Comments

More Developer Tools MCP servers

paprika3d

Three.js MCP server and Claude Code plugin: screenshot, play, test and profile the three.js, React Three Fiber and WebGL pages your coding agent builds. paprika3d runs them in headless Chrome on a paused, seeded clock.

LocalCan

Gives AI agents public URLs (tunnels) for localhost, live HTTP traffic inspection, snapshot publishing, and access control. Part of LocalCan, the ngrok alternative for Mac, Windows and Linux. Free plan.

Cronwatch

cronwatchdev

CronWatch records every run of your scheduled jobs in your own database, and speaks up when one is missed, fails, gets stuck, runs slow or costs too much. CronWatch is free and open-source.

Mcp-Warden

ermoluk

Local-first credential broker for MCP. AI coding agents (Claude Code, Cursor, Codex…) call APIs, SSH and databases through scoped presets; secrets stay in your OS keychain and never enter the agent's context.

Skycloak

Manage your Skycloak-hosted Keycloak: clusters, realms, apps, SSO and users, from any MCP client.