MCP GeoData Placefinder: search places, reverse geocode, and find nearby locations.
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An open-source geocoding API and demo site that converts addresses into geographic coordinates (and vice versa) using Overture Maps data queried through DuckDB.
Features
Full API reference is available on the live demo site at /docs, or read the source in lib/api-spec/openapi.yaml.
| Method | Path | Description |
|---|---|---|
GET | /api/health | Server status and cache info |
GET | /api/search | Geocode by name, address, city, postcode, or category |
GET | /api/reverse | Reverse geocode β places near a coordinate |
GET | /api/places/nearest | Single closest place within a radius |
GET | /api/places/:id | Full place detail by Overture place ID |
The API server is available at http://localhost:8080 and the demo site at http://localhost:3000. The production deployment is at https://geodataplacefinder.org.
Note: On first start DuckDB fetches ~50 000 place records from Overture Maps S3 (~15 s). Subsequent restarts load the local cache instantly from
data/places.duckdb.
Dockerfile (API server)docker-compose.yml| Variable | Default | Description |
|---|---|---|
PORT | 8080 | API server port |
SESSION_SECRET | β | Secret used for session signing (set for production) |
Contributions are welcome. Please read CONTRIBUTING.md before opening a pull request.
GeoDataPlacefinder is released under the GNU General Public License v3.0. See LICENSE for the full text.
Data sourced from Overture Maps Foundation, released under CDLA Permissive 2.0.
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