@olano/mcp-rail-sg

Read-only MCP tools for Singapore MRT and LRT stations, station exits, line codes, interchanges, nearest-location lookup, and historical network counts.

Fourteen tools are offline-first and require no API key. The optional rail_nearest_stations_to_address tool uses live OneMap geocoding and requires ONEMAP_TOKEN. The package bundles normalized snapshots from official LTA and data.gov.sg sources so its core station queries are fast and deterministic.

Run

npx @olano/mcp-rail-sg

Streamable HTTP is also supported:

npx @olano/mcp-rail-sg --transport http --port 3000

Tools

• rail_source_metadata
• rail_network_summary
• rail_list_stations
• rail_search_stations
• rail_get_station
• rail_get_station_connections
• rail_list_exits
• rail_get_station_exits
• rail_nearest_stations
• rail_nearest_exits
• rail_nearest_stations_to_address (requires ONEMAP_TOKEN)
• rail_list_lines
• rail_list_stations_by_line
• rail_list_interchanges
• rail_historical_station_counts

Example questions

• “What are the MRT and LRT codes for Choa Chu Kang?”
• “Find the five nearest rail stations to latitude 1.29027, longitude 103.851959.”
• “Find the nearest MRT stations to 1 Fullerton Road.”
• “Which City Hall exit is nearest to these coordinates?”
• “List every station on the Thomson-East Coast Line.”
• “Show all MRT/LRT interchange complexes.”
• “How did Singapore’s published MRT and LRT station counts change from 2004 to 2017?”

Source coverage and limitations

| Source | Coverage used | What it provides | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------- | -------------------------------------------- | | LTA Train Station Codes and Chinese Names | Jan 2025 | Codes, names, Chinese names, line membership | | LTA Train Station Exit Point | Aug 2025 | 613 official exit coordinates | | LTA Train Lines Codes | Feb 2024 | Official line-code and direction records | | data.gov.sg Number of MRT and LRT Stations | 2004–2017 | Historical station counts |

Use rail_source_metadata for official URLs and complete caveats. In particular:

• these are dated snapshots, not live service status;
• the exit mirror describes data from August 2025; July 2026 is its publisher-page update, not data coverage;
• station coordinates are averages of official exit positions, not platform centroids;
• nearest-distance tools calculate straight-line distance, not walking routes;
• the line-direction file predates later extensions;
• the historical series ends in 2017 and omits 2015 and 2016.