I think we can pull this directly from the client by parsing the RelayChain text files. I have several potential property examples at Has anyone tried using an F5 VIP to act as a proxy to multiple BigFix Relays? including
// Direct Parent Relay
Q: tuple string items (number of tuple string items of it - 1) of tuple string of tuple string items whose (it starts with "r:" or it starts with "s:") of tuple string of substrings separated by " - " of lines (maximum of line numbers of lines of it) of files ((unique value of maxima of (((substrings before ".txt" of Names of it) as Integer) of Files of it)) as string & ".txt") of Folders "__Global/RelayChain" of data folder of client