Link Lookup Resource

_{Published: 06 July 2025}

Known Uses

The Link Lookup Resource pattern is a specialized API endpoint, sometimes known as an API Directory, Endpoint Repository, or Service Registry, that lets clients retrieve the current URIs of all available API endpoints. At present, government and energy-sector APIs do not use this pattern. Instead, most APIs provide resource collections (such as /zaken, /adressen, or /subsidieregelingen) and include links to related resources directly within each response. This means clients are expected to follow these embedded hyperlinks, rather than querying a separate link lookup endpoint. As a result, there are no dedicated link lookup resources in individual APIs for dynamically discovering up-to-date endpoint addresses. The only exception is the API gateway portal, which acts as a central registry of available APIs – but it does not offer per-service lookup endpoints.