GET/v1/boundaries/{id}

API key required, sent as Authorization: Bearer snk_… or ?api_key=snk_….

Call it

bash

curl -fsS -X GET "https://api.mapmap.ai/v1/boundaries/{id}" \
  -H "Authorization: Bearer $MAPMAP_KEY"

Parameters

Name	In	Required	Description
id	path	yes	A `boundary_id` from `GET /v1/boundaries`, e.g. `osm-r51827`

Responses

200A GeoJSON Feature: the stored MultiPolygon (Douglas-Peucker simplified, coordinates to 1e-6°) with the search fields plus simplification: {method, tolerance_deg, tolerance_m, vertices, source_vertices}, data_updated, licence and attribution in properties. The Feature is accepted as is as a custom region's polygon, and a cut by it equals a cut by the boundary_id

400Not a boundary id

401Missing or invalid API key

404No such boundary in this deployment's data

501Boundaries by name not enabled (SN_BOUNDARIES_DIR unset)

Error bodies follow the shared problem model documented on API conventions.

Also under boundaries

GET /boundary GET /v1/boundaries

Generated from https://api.mapmap.ai/openapi.json on 2026-10-31 · operationId get_boundary_by_id