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:
| Binary | Transport | Use case |
|---|
geomelon-mcp | stdio | Claude Desktop, Cursor, Cline, Continue |
geomelon-mcp-http | HTTP (Streamable) | Claude Code, remote / hosted server |
Requirements
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:
Start the server (dotenv loads .env automatically):
Register it with Claude Code:
claude mcp add --transport http geomelon http://localhost:3000/mcp
Verify it's connected:
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:
Start the server:
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").
Cities
| Tool | Description |
|---|
search_cities | Search by name, country code, region, population range, sort order |
get_city | Full details for a city by UUID |
get_city_translations | All name translations for a city by UUID |
get_city_settlement_types | Settlement-type classifications for a city by UUID |
cities_by_coordinates_closest | Cities nearest to a lat/lon, ordered by distance |
cities_by_coordinates_largest | Largest cities near a lat/lon, ordered by population |
cities_distance | Distance in km between two cities |
Countries
| Tool | Description |
|---|
list_countries | List countries, filter by name prefix or telephone dialing code |
get_country | Full details for a country by UUID (includes translations and regions) |
get_country_translations | Name translations for a country by UUID |
get_country_regions | All administrative regions for a country by UUID |
Regions
| Tool | Description |
|---|
list_regions | List regions, filter by country UUID |
get_region | Full details for a region by UUID |
get_region_translations | Name translations for a region by UUID |
Languages
| Tool | Description |
|---|
list_languages | List all languages in the database |
get_language | Details for a language by UUID |
Oneshot prefix search (free, no API key)
| Tool | Description |
|---|
search_cities_autocomplete | Country-scoped, language-specific city name prefix search backed by pre-built static files. The only tool available in keyless demo mode. Works in keyed mode too — it's the fastest search path. |
See geomelon.dev/free-city-autocomplete-api for supported country/language pairs and the underlying HTTP endpoint.
These tools chain multiple API calls internally to save round-trips.
| Tool | Description |
|---|
find_cities_near_city | Given a city UUID, find nearby cities ordered by distance or population |
city_context | Fetch a city together with its full country and region details in one call |
country_overview | Fetch a country (by UUID or name), its regions, and top cities by population |
compare_cities | Fetch two cities and the distance between them in one call |
search_cities_in_country | Search cities using a country name instead of an ISO code |