CardDAV is an open standard that Google developed for accessing contact information all across the internet. The Google CardDAV API uses the CardDAV protocol to let users view and manage the contacts stored in their Google accounts programmatically. The API allows client applications to create, edit, delete, and search the user's contacts using REST calls. The Google CardDAV API has been integrated with the Google APIs Console so that developers can add it to their projects simply by enabling it on the Console.
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