user-access-token-response-parameters.md

Response parameter	Type	Description
access_token	string	The user access token. The token starts with ghu_.
expires_in	integer	The number of seconds until access_token expires. If you disabled expiration of user access tokens, this parameter will be omitted. The value will always be 28800 (8 hours).
refresh_token	string	The refresh token. If you disabled expiration of user access tokens, this parameter will be omitted. The token starts with ghr_.
refresh_token_expires_in	integer	The number of seconds until refresh_token expires. If you disabled expiration of user access tokens, this parameter will be omitted. The value will always be 15897600 (6 months).
scope	string	The scopes that the token has. This value will always be an empty string. Unlike a traditional OAuth token, the user access token is limited to the permissions that both your app and the user have.
token_type	string	The type of token. The value will always be bearer.