When calling host.delete only true is returned, and not the values expected as per documentation
http://www.zabbix.com/documentation/1.8/api/host/delete

Sending:

{"auth":"db2b07bbeb0e07ce339290919a0adaa6","id":2,"method":"host.delete","params":[10052],"jsonrpc":"2.0"}

Response Code: 200
Response Body:

{"jsonrpc":"2.0","result":true,"id":2}