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Factline Netherlands Reverse Geocoding
x402
Factline Netherlands Reverse Geocoding is a paid API for AI agents from factline.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).
Converts WGS84 latitude/longitude coordinates into the nearest official Dutch address from the BAG register, with postcode, city, municipality, province, BAG IDs, and CBS neighbourhood codes.
Price / call$0.002
Success—
StatusUnknown
How this service works
API and MCP servers that let AI agents and apps check people, companies, Dutch addresses and cars against official records: sanctions and PEP lists, 10 company registers, Dutch property, rent and RDW vehicle data. From $0.001 per call.
Output
A JSON object containing the nearest official BAG address (street, house number, letter, postcode, city, municipality, province, municipality code), distance in metres to the matched address, BAG address and addressable object IDs, CBS neighbourhood (buurt) and district (wijk) name and code, the matched coordinate in WGS84, and a list of other nearby addresses with their distances.
Example use cases
Field technician location check
“Our engineer just logged GPS coordinates 52.3702, 4.8952 — what is the official BAG address at that spot, and which neighbourhood is it in?”
Delivery address verification from GPS
“A parcel driver's device recorded lat 51.9225, lon 4.4792 as the drop-off point — what is the nearest registered Dutch address and postcode according to the BAG?”
Real estate location enrichment
“I have a property coordinate of 52.3676° N, 4.9041° E — can you give me the full official address, municipality, province, and CBS wijk code for that location?”
Technical details
Endpoint
GEThttps://factline.dev/v1/address/reverse?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to resolve a GPS coordinate to an official Dutch registered address from the authoritative national BAG register, especially when you also need CBS neighbourhood/district codes, BAG object IDs, or municipality codes in a single call. Prefer it over generic geocoding APIs for Netherlands-specific administrative data and official address identifiers.
Side effects
- Coordinates outside the Netherlands return no result or an error
- Missing lat or lon query parameters return a 400-level validation error
- Coordinates in uninhabited areas may return a distant nearest address with a large distance_m value
- Malformed decimal values for lat/lon (e.g. using comma instead of period) may cause parsing errors
- PDOK Locatieserver upstream unavailability may result in 502/503 responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"bag": {
"address_id": "0518200000432204",
"addressable_object_id": "0518010000432205"
},
"query": {
"lat": 52.0836,
"lon": 4.2919
},
"source": "Kadaster BAG via PDOK Locatieserver",
"address": {
"city": "'s-Gravenhage",
"label": "Laan van Meerdervoort 100A, 2517AS 's-Gravenhage",
"street": "Laan van Meerdervoort",
"postcode": "2517AS",
"province": "Zuid-Holland",
"house_letter": "A",
"house_number": 100,
"municipality": "'s-Gravenhage",
"municipality_code": "GM0518",
"house_number_addition": null
},
"district": {
"code": "WK051822",
"name": "Wijk 22 Zeeheldenkwartier"
},
"location": {
"crs": "WGS84",
"lat": 52.08358839,
"lon": 4.29191123
},
"distance_m": 1.5,
"other_nearby": [
{
"label": "Laan van Meerdervoort 100, 2517AS 's-Gravenhage",
"distance_m": 2.2
},
{
"label": "Laan van Meerdervoort 100B, 2517AS 's-Gravenhage",
"distance_m": 2.8
}
],
"neighbourhood": {
"code": "BU05182245",
"name": "Zeeheldenkwartier"
}
}
}Tags
x402
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