iOS & node.js: how to verify passed access token?

Question

I have an iOS which uses OAuth and OAuth2 providers (Facebook, google, twitter, etc) to validate a user and provide access tokens. Apart from minimal data such as name and email

Answer 1

To get info about token from Google use, be careful vith version api https://www.googleapis.com/oauth2/v3/tokeninfo?access_token={accessToken}