The Metered Teams API for accessing online meeting transcripts does fall under the category of onlineMeeting
as listed in the Microsoft Graph throttling limits.
Ref: https://learn.microsoft.com/en-us/graph/throttling-limits
Regarding the implementation of a custom throttling policy on Graph APIs accessed using your application's generated access token, it is not possible to implement custom throttling policies on a per-user basis. Microsoft Graph has built-in features that handle throttling automatically.
To achieve your requirements, we recommend you give your feedback in Teams Feedback Portal.
Thanks,
Prasad Das
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