When i trying to delete host through API, i recieved error: "You do not have permission to perform this operation".
But user which i use have API access and write access to host. And i geting request describe on http://www.zabbix.com/documentation/1.8/api/host/delete

Example:
>>> zapi = zabbix_api.ZabbixAPI()
>>> zapi.login('Admin', 'zabbix')
>>> zapi.host.get(

{ 'count' : True }

)
[

{u'hostid': u'10017'}

,

{u'hostid': u'10047'}

,

{u'hostid': u'10051'}

]

!!! >>> zapi.host.delete(

{'hostid': '10047'}

)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "zabbix_api.py", line 293, in wrapper
return self.do_request(self.json_obj(name,opts))['result']
File "zabbix_api.py", line 275, in do_request
return self.parent.do_request(req)
File "zabbix_api.py", line 240, in do_request
raise ZabbixAPIException(msg)
zabbix_api.ZabbixAPIException: Error -32500: Application error., [ CHost::delete ] You do not have permission to perform this operation

I think the problem not seems to me in permission, it in worng parameters or it API bug