OAuth parameters

Description
Where to I get the OAuth Redirect Url?

Error
Invalid redirect: https://zoom.us/oauth/authorize (4,700)

The OAuth Redirect URL is something you would provide from your web application. It is the URL that Zoom redirects you to, after authenticating.

Thanks @samly@rotabigue, this link would be a destination in your application which would handle a user who has just authorized Zoom. It could be an internal dashboard, or a user settings page. It is highly dependent on what is best for your user authorization flow.