Build with the API
Get a key, make a lookup, and read the status, source and limitations in the response. The reference gives endpoints and examples for each API.
API documentationDATA · MODELS · API
Data and models for property, companies and places.
Connect registry data with calculations and model estimates. Explore sources, contracts and limitations, and use them in your own services through an API or MCP.
100 counted lookups over 14 days · no payment card to start
FROM SOURCE TO SERVICE
- The source
Records from registries and data providers.
- The evidence
Source, status and limitations accompany the data section.
- Your service
Use the API or MCP with your key’s grants.
SOURCESTATUSACCESS
What can an address tell you?
01 / READING THE DATA
See each answer’s source and status.
Each data section shows its source and status, plus an update time where available. You can distinguish an empty result from an unavailable source or a field that needs an agreement. Registry data describes what is recorded, not a building’s condition.
How to read a responseReading active model releases …
Find data and models for what you are building.
Search across data and models. Descriptions and sources, without making a data lookup.
325 of 325 entries · The first six are shown here.
- Official address and cadastral identifiers
addresses:address_detailsSource: Kartverket address register
- Registered address units
addresses:address_unitsSource: Kartverket address register
- Cached building facts
addresses:buildingsSource: Matrikkel
- Cached dwelling facts
addresses:dwelling_unitsSource: Matrikkel
- Building cache coverage and source reconciliation
addresses:building_source_statusSource: Matrikkel ingestion
- Live Matrikkel lookup requested for this address
addresses:source_lookupSource: Matrikkel read-through
02 / CONNECT
Explore workflows for insurance, alarms, contractors and homeowners
From the demo to your workflow.
Use with an AI assistant
The MCP adapter provides address search, lookups, the catalogue and series as tools in compatible clients. It uses the same key and grants as the API; agreement-gated fields still need separate approval.
View MCP setup03 / GET STARTED
Start using Datakilde.
Create an account and get a trial key with 100 counted lookups over 14 days. See usage and try calls from your account. Contact us about agreement-gated data or higher volumes.