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Artifact Registry implements a Docker protocol so that you can push and pull
images directly with Docker clients, including the
Docker command-line tool.
Google Cloud services that typically integrate with
Artifact Registry, such as Cloud Build and Google Kubernetes Engine, are
configured by with default permissions to access
repositories in the same project and do not require a separate client.
If you want to interact with Artifact Registry without the Docker client,
we recommend using the gcrane tool. The tool provides:
Simple commands that work with Artifact Registry, Container Registry, and
other registries.
Useful commands for Artifact Registry and Container Registry tasks that do
not have an equivalent command in the Google Cloud CLI or the Docker
command-line tool, such as listing untagged images or copying images across
registry hosts.
If gcrane isn't an appropriate option, you can use the Docker Registry HTTP API.
If using Docker or the gcrane tool is not an option, you can use the Docker
Registry HTTP API.
First, grant the required permissions to your user account. You can then use
the Google Cloud CLI to create an access token for requests.
The following example shows the command for listing tags, using
my-image as the image and my-project as the Google Cloud project. This
example also uses the jq command to filter and format the output returned by
requests, but it's optional. The jq tool is included in Cloud Shell.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-29 UTC."],[[["\u003cp\u003eArtifact Registry utilizes a Docker protocol, enabling direct image pushing and pulling with Docker clients, like the Docker command-line tool.\u003c/p\u003e\n"],["\u003cp\u003eGoogle Cloud services like Cloud Build and Google Kubernetes Engine have default permissions to access repositories within the same project without requiring a separate client.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003egcrane\u003c/code\u003e tool is recommended for interacting with Artifact Registry without the Docker client, and it provides useful features not found in the Google Cloud CLI or the Docker command-line tool.\u003c/p\u003e\n"],["\u003cp\u003eThe Docker Registry HTTP API can be used as an alternative to Docker or \u003ccode\u003egcrane\u003c/code\u003e, and it requires proper authentication which can be done using a Google cloud CLI access token.\u003c/p\u003e\n"],["\u003cp\u003eArtifact Registry does not support chunked uploads, meaning that when pushing images they must be done in a monolithic upload.\u003c/p\u003e\n"]]],[],null,["# Support for the Docker Registry API\n\nArtifact Registry implements a Docker protocol so that you can push and pull\nimages directly with Docker clients, including the\n[Docker command-line tool](https://docs.docker.com/engine/reference/commandline/cli/).\n\nGoogle Cloud services that typically integrate with\nArtifact Registry, such as Cloud Build and Google Kubernetes Engine, are\nconfigured by with [default permissions](/artifact-registry/docs/access-control#integration) to access\nrepositories in the same project and do not require a separate client.\n\nIf you want to interact with Artifact Registry without the Docker client,\nwe recommend using the [gcrane](https://github.com/google/go-containerregistry/blob/main/cmd/gcrane/README.md) tool. The tool provides:\n\n- Simple commands that work with Artifact Registry, Container Registry, and other registries.\n- Useful commands for Artifact Registry and Container Registry tasks that do not have an equivalent command in the Google Cloud CLI or the Docker command-line tool, such as listing untagged images or copying images across registry hosts.\n\nIf gcrane isn't an appropriate option, you can use the Docker Registry HTTP API.\n\n- See [Authenticating using the Docker Registry API](#auth) for information about authentication using the API.\n- Refer to [Docker Registry HTTP API V2](https://docs.docker.com/registry/spec/api/) documentation for details about the APi request format.\n\n| **Note:** Artifact Registry does not support Docker [chunked uploads](https://docs.docker.com/registry/spec/api/#chunked-upload). Some container image tools support uploading large container images with either chunked uploads or a single [monolithic upload](https://docs.docker.com/registry/spec/api/#monolithic-upload). You must use monolithic uploads when you push container images to Artifact Registry.\n\nAuthenticating using the Docker Registry HTTP API\n-------------------------------------------------\n\nIf using Docker or the `gcrane` tool is not an option, you can use the Docker\nRegistry HTTP API.\n\nFirst, grant the required [permissions](/artifact-registry/docs/access-control) to your user account. You can then use\nthe Google Cloud CLI to create an access token for requests.\n\nThe following example shows the command for [listing tags](https://docs.docker.com/registry/spec/api/#listing-image-tags), using\n`my-image` as the image and `my-project` as the Google Cloud project. This\nexample also uses the [jq](https://stedolan.github.io/jq/) command to filter and format the output returned by\nrequests, but it's optional. The `jq` tool is included in Cloud Shell. \n\n curl -H \"Authorization: Bearer $(gcloud auth print-access-token)\" \\\n \"https://us-docker.pkg.dev/v2/my-project/my-repo/my-image/tags/list\" | jq \".tags\""]]
