Hi Ichigo
No, the OpenAPI Specification (OAS) itself doesn't directly support integrating a Google Sign-in button or any specific social login provider.
OAS focuses on describing your API's functionality and how to interact with it.
However, you can try other possibilities with Google Sign-in functionality alongside your OAS implementation
Frontend Implementation:
Use libraries like Google Sign-In JavaScript Library (https://developers.google.com/) to render a Google Sign-in button on your frontend.
Upon successful sign-in, your frontend code retrieves the user's Google ID Token.
Hope this helps - Happy to help further!!
Thank you very much and have a great one!
Warm regards