Hi @apaul
Thanks for reaching out to the Zoom Developer Forum, I am happy to help here!
It looks like you will benefit from using our Server to Server Oauth app, with this app type you will be able to request an access token to our Zoom Oauth endpoint and with that token, you will be able to access our APIs.
https://developers.zoom.us/docs/internal-apps/
https://devforum.zoom.us/t/how-to-user-server-to-sever-oauth-app-with-postman/70848/3