io.github.cyanheads/openstreetmap-mcp-server

Fetch the Nominatim address record for known OSM objects by ID, 50 per call with any more returned under deferred_ids, each prefixed N (node), W (way), or R (relation), e.g. "N240109189". Use it for IDs already in hand from openstreetmap_query_nearby or openstreetmap_query_bbox; it returns only objects named in osm_ids and lists those with no Nominatim record under not_found (Nominatim skips unnamed and non-place objects, so such an ID may still exist). It cannot select by tag, so discover objects with those tools or openstreetmap_query_raw first.

Find OSM features inside an area via the Overpass API, for surveys of everything in a region (openstreetmap_query_nearby covers proximity to a point). Scope with the four corner fields south, west, north, east, or with within and a single OSM boundary ref such as a city relation or a park way, which searches the boundary polygon itself instead of an overcovering box; never both. Filter with amenity, or with tag_key plus an optional tag_value, ANDing up to five more filters; every feature returns with its full OSM tag set (no extratags flag here).

Find OSM features within a radius of a point via the Overpass API, the tool for "what is near X?" questions. Filter with amenity, or with tag_key plus an optional tag_value, ANDing up to five more filters; every feature returns with its full OSM tag set (no extratags flag here), sorted nearest-first by distance_meters. An area containing the point, such as the park or city it lies in, matches at 0 m whatever the radius.

Run an arbitrary Overpass QL query for anything the convenience tools cannot express: multi-type or union queries, relation membership, historical queries, regex tag matching. The query must include [out:json], e.g. "[out:json][timeout:15];node[\"natural\"=\"peak\"](47.5,-122.5,47.7,-122.2);out body;"; scope to an OSM boundary with rel(<id>);map_to_area->.a; or way(<id>);map_to_area->.a; then (area.a) on each statement (the 2400000000 way-area offset is gone since Overpass 0.7.57; openstreetmap_query_bbox takes the same scope as within, without QL). The response is one page: page with limit and offset, read totalFound and truncated for the whole match, and an element over max_element_bytes arrives with its members, nodes or geometry array withheld whole and withheldNotice saying how to fetch it back. For plain "near X" or "in this area" questions use openstreetmap_query_nearby or openstreetmap_query_bbox.

Convert a latitude/longitude pair to the nearest address or named place via Nominatim. The result is the closest indexed OSM object at the requested zoom (18 building, 10 city), which in dense areas can be a neighbouring feature rather than the one containing the coordinate; proximity and layer pick it, never an OSM attribute tag, so find features by tag with openstreetmap_query_nearby, openstreetmap_query_bbox, or openstreetmap_query_raw.

Geocode a place name or address to coordinates and structured place data via Nominatim. Send either a free-form query or the structured address fields (street, city, county, state, country, postalcode), never both; results are the best-ranked matches, not every matching object, and matching never uses an OSM attribute tag, so filter or enumerate by tag with openstreetmap_query_nearby, openstreetmap_query_bbox, or openstreetmap_query_raw.