Yes. CORE APIs impose a limit on the number of API requests your applications can make in a given amount of time. Here are the current rate limits applicable for CORE APIs:
New applications added in the developer portal after February 21, 2024 have a limit of 100 requests/minute. The limit is imposed on a per-app-per-user basis.
For applications added prior to this date, please refer to the X-Rate-Limit headers sent in the responses to the API requests to know the rate limit in place. Here, the limit is imposed on a per-app basis.