ACI have a JSON list of APIC FQDNs: [ "apic1.fabric1.test.net", "apic2.fabric1.test.net", "apic3.fabric1.test.net", "apic1.fabric2.test.net", ... ] I can step through that list and login to each APIC and get the list of APICs in that fabric's controller cluster. By comparing cluster members, I can then figure out which APICs belong to which fabric. What I can't seem to find is an API call to tell me what the serial number is of the APIC I am currently connected to. Anyone got any ideas?