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Registry catalog

A registry may contain several repositories which hold collections of multiple images. Each repository is identified by its unique name. The list of names of all distributed repositories is made available through the _catalog endpoint.

For instance, let's assume that a new distribution of a repository with the name library/zoo was recently created. Its name is now possible to fetch from the list of names of distributed repositories.

$ http
HTTP/1.1 200 OK
Access-Control-Expose-Headers: Correlation-ID
Connection: keep-alive
Content-Length: 63
Content-Type: application/json
Correlation-ID: 1de33d4807a244f1b00c10df3fdc7a1b
Cross-Origin-Opener-Policy: same-origin
Date: Fri, 17 May 2024 10:20:25 GMT
Docker-Distribution-Api-Version: registry/2.0
Referrer-Policy: same-origin
Server: nginx
Strict-Transport-Security: max-age=15768000
Vary: Accept
X-Content-Type-Options: nosniff
X-Frame-Options: DENY
X-Registry-Supports-Signatures: 1

    "repositories": [


For the sake of simplicity of this example, there is missing required user token authentication to this endpoint. Users will see only those repositories in the registry catalog that they have access to. Visit Token authentication section to learn more.