Can anyone help share the code/logic to request/read token from Peoplesoft Login URL.

We are trying to integrate ENTRA MFA with Peoplesoft. We have developed a code to decode the sample token, parse it and perform the Authentication. We are searching for logic to capture the token dynamically which is being sent as part of Peoplesoft login page URL. Can we use %request.GetHEader(Token_Name) to capture the token form URL or if anyone knows/developed similar scenario before can you please help share the logic.