-h3. Authentication
-
-These Arvados resources govern authorization and "authentication":authentication.html:
-
-* "ApiClient":schema/ApiClient.html
-* "ApiClientAuthorization":schema/ApiClientAuthorization.html
-* "AuthorizedKey":schema/AuthorizedKey.html
-
-h3. Arvados Infrastructure
-
-These resources govern the Arvados infrastructure itself: Git repositories, Keep disks, active nodes, etc.
-
-* "KeepDisk":schema/KeepDisk.html
-* "Node":schema/Node.html
-* "Repository":schema/Repository.html
-* "VirtualMachine":schema/VirtualMachine.html
+When configured, the Controller also exports the "metadata vocabulary definition":{{site.baseurl}}/admin/metadata-vocabulary.html in JSON format. This functionality is useful for clients like Workbench and the Python SDK to translate between identifiers and human-readable labels when reading and writing objects on the system. This is available at @/arvados/v1/vocabulary@, for example @https://{{ site.arvados_api_host }}/arvados/v1/vocabulary@.