Hi, I have finally been able to authenticate with the Google Contacts API.
When I send
response <- httr::GET('https://www.google.com/m8/feeds/contacts/{email}/full', list(access_token = mytoken))
I get a status 200 reponse but the repsonse$contents say it is 'raw' and I can't read it.
.....
[561] 67 6c .... 6e 6b 20 68 72 65 66 3d...
[641] 38 2f 6...... 74 6f
...