Remote MCP Server On Cloudflare Gka

🚀 Setting up a Remote MCP Server on Cloudflare

Let's get a remote MCP server up and running on Cloudflare Workers and integrate OAuth login!

🚀 Quick Start

💻 Local Development

# Clone the repository
git clone git@github.com:cloudflare/ai.git

# Install dependencies
cd ai
npm install

# Run locally
npx nx dev remote-mcp-server

You should be able to open a browser window at http://localhost:8787/.

📦 Connecting MCP Inspector to Your Server

To explore the new MCP API, you can use the MCP Inspector.

• Start it using npx @modelcontextprotocol/inspector.
• Switch the transport type to SSE in the inspector, enter http://localhost:8787/sse as the MCP server address in the URL field, and click "Connect".
• You'll be redirected to a (simulated) user/password login page. Enter any email and password to log in.
• After successful login, you should be redirected back to the MCP inspector, and you can list and call any defined tools!

💻 Connecting Claude Desktop to Your Local MCP Server

Although the MCP inspector is powerful, what we really want to do is connect it to Claude! Follow Anthropic's Quick Start Guide, go to Settings > Developers > Edit Configuration in Claude Desktop to find your configuration file. Open the file in a text editor and replace it with the following configuration:

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

This will run a local proxy that allows Claude to communicate with your MCP server over HTTP. When you open Claude, a browser window should open and allow you to log in. You should see a list of available tools in the bottom right corner. As prompted, Claude should be able to call tools to answer questions.

🚀 Deployment to Cloudflare

1. npx wrangler kv namespace create OAUTH_KV
2. Follow the guide to add the KV namespace ID to wrangler.jsonc
3. npm run deploy

💻 Calling Your Newly Deployed Remote MCP Server from a Remote MCP Client

Just as you did in "Local Development" above, run the MCP inspector: npx @modelcontextprotocol/inspector@latest Then enter your Worker's workers.dev URL (e.g., worker-name.account-name.workers.dev/sse) as the MCP server address in the inspector and click "Connect". You have successfully connected the MCP server to the remote MCP client.

💻 Connecting Claude Desktop to Your Remote MCP Server

Update the Claude configuration file to point to your workers.dev URL (e.g., worker-name.account-name.workers.dev/sse), and then restart Claude.

{
  "mcpServers": {
    "math": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "worker-name.account-name.workers.dev/sse"
      ]
    }
  }
}