Crossplane packages offer API types in a cluster by installing CRDs or XRDs. Packages that are pushed to xpkg.upbound.io have auto-generated documentation for their API types on the Upbound Marketplace. You can access documentation for the most recent release of any package by navigating to https://marketplace.upbound.io/{provider|configuration}/<org>/<repo>.

Crossplane repositories that do not contain providers or configurations, but do publish CRDs, are served on doc.crds.dev. For instance, the crossplane/crossplane repository.