Thanks for checking it out :) And I agree with you - it's definitely a small use case. I think it would be most helpful for companies with a small dev team who want to implement a favorites list, but may have other, more pressing things on their backlog.
It's an idea that has been in my head for a while. I like the idea of small feature-based APIs that can be used without requiring much dev time.
A bit pricy for my taste since what you are saying is "You'll need to hire a developer", although a developer will integrate your API. :thinking: