Thank you for posting in the Developer Forum-- happy to help. Yes, it is possible to fetch meeting instances from Zoom with our List meeting API. In order to access users meeting information, you will have to create OAuth app in Zoom Marketplace. When a user “installs” your app, they are actually just giving your app permission to make requests on their behalf. Here’s our help documentation on that subject:
To track meeting instance creations, you can leverage our Meeting Created Webhook. The Meeting Created event is triggered every time a meeting is created by one of your app users or account users. For your reference, I’ve linked our help documentation below:
Please let me know if this answers your questions.