The Google One-Tap Sign-Up documentation web page displays the following message:
This API is currently in closed beta. We are improving the API's cross-browser functionality and will provide updates here in the coming months.
https://developers.google.com/identity/one-tap/web/
Is One-Tap Sign-Up safe for production use currently?
Also while testing the functionality I was not able to test this on non-Chrome browsers successfully. Is this available for browsers other than Chrome?
was also looking for a clear answer to this
from troubleshooting page:
...If you see the warning The client origin is not permitted to use this API, your service has not yet been accepted to the beta. New sign-ups to this beta are currently closed.
They also have a supported browser \ os table on there