It seems that you must include "service" which you want to be asked So curl -X POST -H "Content-Type: application/json" -d '{ "command": "lease4-get-all", "service": [ "dhcp4" ] }' http://127.0.0.1:8080 | jq should work -- Sent from: http://kea-users.7364.n8.nabble.com/