Is there API limitation on parallel API calls for adding models to favorites

Summary:

The user uses a Salesforce Commerce to do model configurations.

The model configurations need to be saved by user. Planning to use the Favorites API to add the models to favorites.

Content (please ensure you mask any confidential information):

API that is planned to be used. Is there any limitation for parallel calls as there can be multiple users trying to use this via Commerce portal.

Also, is there an hourly limit of consecutive API calls. Could not find anything in documentation.

Version (include the version you are using, if applicable):

26A

Code Snippet (add any code snippets that support your topic, if applicable):