For more details about the following attributes, see Retrieving the User's Information from Apple ID Servers in the Apple Developer documentation.

For the email, first_name, and lastname attributes, see the note about scopes in Known issues and limitations.

Attribute Description
iss The issuer-registered claim key, which has the value https://appleid.apple.com.
user_id The unique identifier for the user. This is Apple's primary identifier for the user.
aud The client_id for your Apple Developer account.
email The user's email address. The user may choose to share their real email address or an anonymous one that uses the private email relay service.

Available with the email scope.

email_verified A Boolean value that indicates whether the service has verified the email. The value of this claim is always true because the servers only return verified email addresses.
access_token The access token provided by Apple.
first_name The user's first name.

Available with the name scope.

last_name The user's last name.

Available with the name scope.