Limit Geographic Location for Client Scheduling - API?

Curious if you guys might be aware of an existing API (or ideas to create) a code that limits client-scheduling (acuity scheduling) based on geographic location (mile radius from the appointment site). I offer a 'pickup' option for clients, however, I am stuck in automating an 'error' message that indicates "(i.e.,: your location is outside the [service area])".

I’m wondering the same thing, did you find a solution?