ServiceCount
ServiceCount returns how many services are registered and the global cap, so a caller can check headroom without pulling the whole list.
Command
gnokey query vm/qeval -remote "https://rpc.pearl.testnets.gno.land" -data "gno.land/r/g1ut6uspuh73e02yauxpmyt8g3wwddaq8utagvm3/service_registry.ServiceCount()"
Result