Catalogue Service for the Web (CSW) API

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CSW is an Open Geospatial Consortium (OGC) specification that defines common interfaces to discover, browse, and query metadata about data, services, and other potential resources. provides access to its catalog via the CSW standard for both first-order and all metadata for harvested data, services and applications. The first-order CSW endpoint provides collection-level filtering of all metadata records. The all metadata CSW endpoint provides all levels of metadata at varying levels of granularity.

Any client supporting CSW (desktop, GIS, web application, client library, etc.) can integrate the CSW endpoints.

For the latest information on CSW, see also