An extension adds/modifies/removes commands that are part of az and can be optionally installed by the user.

• Extensions are supported through all installation methods.
• Extensions are the way to go to release private/public previews of your Azure CLI commands.
• Currently, we support one extension type, a Python Wheel.
• All extension documentation here refers to this type of extension.

• An extension is not an external executable or product outside of az.

• If you're looking to create a command module which is installed by default for az, see authoring command modules.

• If you're looking to build your own CLI using az patterns, see knack.

• List all available extensions: az extension list-available

• Install an extension: az extension install --name <extension-name>

More details on usage in Extensions for Azure CLI 2.0

• Authoring - How to author, develop and publish an extension

• Command Guidelines - Command Guidelines

• Summary Guidelines - Summary guidelines for extensions to be published

• Extension Metadata - How to add additional extension metadata

• FAQ - Commonly asked questions