Meraki API for revoking client access

We are working on a Meraki-project where we provide a Custom-Hosted Splash Page for our customer. Once the Guest fills in a form he/she will be granted access for 24H.

However, one of our use-case is that our customer wants to revoke the client access from within our application before the 24H ends (not from Meraki GUI).

So my question is this. Is there a API  to revoke access for a client (by MAC)?

What you want to do is possible with the RADIUS change of authorization (COA) feature we released last year. Your radius server must send a disconnect packet to trigger the revoke of access.

Start with the KB article here:

https://documentation.meraki.com/MR/Splash_Page/CoA_Disconnect_for_Splash_Sign-on