API Reference

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class Error:

Standard API error envelope. Every error response wraps a single error object with a machine-readable code, a human-readable message, and optional structured details.

InnerError error

Error payload

String code

Machine-readable error code (e.g. invalid_request, not_found, rate_limited, query_error, daily_limit_exceeded)

String message

Human-readable explanation of what went wrong

Optional<Details> details

Structured details when available (e.g. field-level validation errors, rate limit metadata, billing info)

class FeatureCollection:

GeoJSON FeatureCollection (RFC 7946). For paginated endpoints, metadata is returned in HTTP response headers rather than the body:

Header	Description
X-Limit	Requested result limit
X-Has-More	true if more results exist
X-Next-Cursor	Opaque cursor for next page (cursor pagination)
X-Next-Offset	Numeric offset for next page (offset pagination)
Link	RFC 8288 rel="next" link to the next page

Content-Type is application/geo+json.

List<GeoJsonFeature> features

Array of GeoJSON Feature objects

GeoJsonGeometry geometry

GeoJSON Geometry object per RFC 7946. Coordinates use [longitude, latitude] order. 3D coordinates [lng, lat, elevation] are used for elevation endpoints.

Coordinates coordinates

Coordinates array. Nesting depth varies by geometry type: Point = [lng, lat], LineString = [[lng, lat], ...], Polygon = [[[lng, lat], ...], ...], etc.

One of the following:

List<double>

List<List<double>>

List<List<List<double>>>

List<List<List<List<double>>>>

Type type

Geometry type

One of the following:

POINT("Point")

LINE_STRING("LineString")

POLYGON("Polygon")

MULTI_POINT("MultiPoint")

MULTI_LINE_STRING("MultiLineString")

MULTI_POLYGON("MultiPolygon")

Properties properties

OSM tags flattened as key-value pairs, plus @type (node/way/relation) and @id (OSM ID) metadata fields. May include distance_m for proximity queries.

Type type

Always Feature

Optional<String> id

Compound identifier in type/osm_id format

Type type

Always FeatureCollection

class GeoJsonFeature:

GeoJSON Feature representing an OSM element. Tags from the original OSM element are flattened directly into properties (not nested under a tags key). Metadata fields @type and @id identify the OSM element type and ID within properties.

GeoJsonGeometry geometry

GeoJSON Geometry object per RFC 7946. Coordinates use [longitude, latitude] order. 3D coordinates [lng, lat, elevation] are used for elevation endpoints.

Coordinates coordinates

Coordinates array. Nesting depth varies by geometry type: Point = [lng, lat], LineString = [[lng, lat], ...], Polygon = [[[lng, lat], ...], ...], etc.

One of the following:

List<double>

List<List<double>>

List<List<List<double>>>

List<List<List<List<double>>>>

Type type

Geometry type

One of the following:

POINT("Point")

LINE_STRING("LineString")

POLYGON("Polygon")

MULTI_POINT("MultiPoint")

MULTI_LINE_STRING("MultiLineString")

MULTI_POLYGON("MultiPolygon")

Properties properties

OSM tags flattened as key-value pairs, plus @type (node/way/relation) and @id (OSM ID) metadata fields. May include distance_m for proximity queries.

Type type

Always Feature

Optional<String> id

Compound identifier in type/osm_id format

class GeoJsonGeometry:

GeoJSON Geometry object per RFC 7946. Coordinates use [longitude, latitude] order. 3D coordinates [lng, lat, elevation] are used for elevation endpoints.

Coordinates coordinates

Coordinates array. Nesting depth varies by geometry type: Point = [lng, lat], LineString = [[lng, lat], ...], Polygon = [[[lng, lat], ...], ...], etc.

One of the following:

List<double>

List<List<double>>

List<List<List<double>>>

List<List<List<List<double>>>>

Type type

Geometry type

One of the following:

POINT("Point")

LINE_STRING("LineString")

POLYGON("Polygon")

MULTI_POINT("MultiPoint")

MULTI_LINE_STRING("MultiLineString")

MULTI_POLYGON("MultiPolygon")