I found this article here, which is for Hudu. But there is apparently an API for Aruba Instant On. Although it’s not directly supported or acknoweldge by HPE
https://mspp.io/documenting-aruba-instant-on-sites-aruba-instant-on-api/
don’t know exactly how it would integrate as such, maybe a hotlink from the client page to the relevant Aruba site, and a way to identify each asset accordingly