Use gcloud auth application-default login to generate credentials.
Alternatively, you can use the -creds flag that points to the path of a Google service account JSON key file.
Usage
Usage of cli:
-creds string
the path of the service account credentials file. if empty, uses Google Application Default Credentials.
-delete
delete this URL from the list (requires -mode update)
-host string
the host of the reading list server (default "http://localhost:8080")
-limit int
limit for the number of links to return when listing links (default 20)
-mode string
(list|update) (default "list")
-url string
the URL to add or delete