POST /datasets/radon

Returns every radon dataset row that intersects a given geometry, or an empty array when nothing intersects.

Base URL: https://api.geocerta.io

Sandbox URL: https://api-staging.geocerta.io

Authentication required. Include your API key in the api-key header. See Authentication.

Endpoint

POST /datasets/radon

Content-Type: application/json

Request Body

Field	Type	Required	Description
`wkt`	string	Yes	The query geometry as a WKT string in British National Grid (EPSG:27700), with coordinates as `easting northing`. `POINT` and `POLYGON` are both accepted; every row whose geometry intersects the input is returned.

Response

200 OK — returns an array of intersecting radon rows, or [] when nothing intersects.

Response Fields

Field	Type	Description
`class`	number	Radon classification band for the area.
`nominal_pct_band`	string \| null	Nominal percentage band of homes estimated above the action level.
`actual_pct_band`	string \| null	Actual percentage band of homes estimated above the action level.
`id`	string \| null	Stable identifier for the row.
`geometry`	GeoJSON `Polygon \| MultiPolygon`	Area geometry as GeoJSON in WGS84 (EPSG:4326), `[longitude, latitude]`.

Errors

Status	Message	Cause
`400`	Bad Request	Body is missing or has an empty `wkt`.
`401`	Unauthorized	Missing or invalid API key.

Example

curl -X POST https://api.geocerta.io/datasets/radon \
  -H "Content-Type: application/json" \
  -H "api-key: YOUR_API_KEY" \
  -d '{
    "wkt": "POLYGON((529968 179968, 530033 179968, 530033 180033, 529968 180033, 529968 179968))"
  }'