geomelon-mcp

MCP server for the Geomelon geographic API. Exposes cities, countries, regions, and languages as tools any MCP-compatible AI client can call.

Looking for other ways to integrate? See all official libraries at geomelon.dev/libraries.

Two transports are included:

Requirements

• Node.js 18+
• A RapidAPI key with the Geomelon API subscribed — optional, see keyless demo mode below

Keyless demo mode

No `GEOMELON_API_KEY`? Run the server anyway — it starts up with just the `search_cities_autocomplete` tool, backed by the free oneshot host, no signup required. Every other tool needs a key. This is the fastest way to try the server before subscribing on RapidAPI.

Try it with zero setup

Geomelon also runs a public hosted instance of this same keyless demo — no `npx`, no local process. Point any remote-MCP-capable client (Claude web/desktop connectors, ChatGPT connectors, MCP Inspector, etc.) at:

https://mcp.geomelon.dev/mcp

It exposes only `search_cities_autocomplete`, same as running the server yourself with no API key. For the full 22-tool set, run your own instance (below) with your RapidAPI key.

Claude Code (HTTP)

Create a `.env` file in the directory you'll run the server from:

cp .env.example .env
# then edit .env and set GEOMELON_API_KEY

Start the server (dotenv loads `.env` automatically):

npx geomelon-mcp-http

Register it with Claude Code:

claude mcp add --transport http geomelon http://localhost:3000/mcp

Verify it's connected:

claude mcp list

The server must be running whenever you use Claude Code. To use a different port set `PORT=your_port` and update the URL in the `claude mcp add` command accordingly.

Claude Desktop (stdio)

Add to `~/Library/Application Support/Claude/claude_desktop_config.json`:

{
  "mcpServers": {
    "geomelon": {
      "command": "npx",
      "args": ["-y", "geomelon-mcp"],
      "env": {
        "GEOMELON_API_KEY": "your_rapidapi_key_here"
      }
    }
  }
}

Restart Claude Desktop after saving.

Cursor / Windsurf / Cline (stdio)

Add to your editor's MCP config:

{
  "geomelon": {
    "command": "npx",
    "args": ["-y", "geomelon-mcp"],
    "env": {
      "GEOMELON_API_KEY": "your_rapidapi_key_here"
    }
  }
}

Remote / hosted HTTP server

Create a `.env` file on your server:

cp .env.example .env
# set GEOMELON_API_KEY and PORT in .env

Start the server:

npx geomelon-mcp-http

Then register with any MCP client using `http://your-host:3000/mcp` as the URL.

The HTTP transport is stateless — each request is independent, no session management needed. CORS is wide open (`Access-Control-Allow-Origin: *`) since this transport is meant to be reachable by browser-based remote-MCP clients too. `GET /` (or `/health`) returns a small JSON status object — useful for uptime checks — reporting whether the instance has a key configured (`"mode": "full"` or `"mode": "keyless-demo"`).

Available tools

Cities

Countries

Regions

Languages

Oneshot prefix search (free, no API key)

See geomelon.dev/free-city-autocomplete-api for supported country/language pairs and the underlying HTTP endpoint.

Compound tools

These tools chain multiple API calls internally to save round-trips.