How can I verify a Google authentication API access token?

Question

How can I verify a Google authentication access token?

I need to somehow query Google and ask: Is [given access token] valid for the [exampl

Answer 1

you can verify a Google authentication access token by using this endpoint:

https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=

This is Google V3 OAuth AccessToken validating endpoint, you can refer from google document below: (In OAUTH 2.0 ENDPOINTS Tab)

https://developers.google.com/identity/protocols/OAuth2UserAgent#validate-access-token