I want to know the api-site document policy for request body. for POST operation This question relates to following issue. https://review.openstack.org/#/c/203987/ which option is correct 1) or 2) for request body description? 1)one description(i.e. volume) for Request body(JSON parameter) http://developer.openstack.org/api-ref-compute-v2-ext.html#createVolume Same pattern http://developer.openstack.org/api-ref-compute-v2-ext.html#createSnapshot 2)each value is described for Request body (JSON parameter) Like this (Create default security group rule) http://developer.openstack.org/api-ref-compute-v2-ext.html#createSecGroupRule Thanks Atsushi SAKAI