diff --git a/tempest/services/compute/json/agents_client.py b/tempest/services/compute/json/agents_client.py
index 1269991..1a1d832 100644
--- a/tempest/services/compute/json/agents_client.py
+++ b/tempest/services/compute/json/agents_client.py
@@ -52,4 +52,5 @@
         """Update an agent build."""
         put_body = json.dumps({'para': kwargs})
         resp, body = self.put('os-agents/%s' % agent_id, put_body)
-        return service_client.ResponseBody(resp, self._parse_resp(body))
+        body = json.loads(body)
+        return service_client.ResponseBody(resp, body['agent'])
diff --git a/tempest/tests/services/compute/test_agents_client.py b/tempest/tests/services/compute/test_agents_client.py
index d268a18..8316c90 100644
--- a/tempest/tests/services/compute/test_agents_client.py
+++ b/tempest/tests/services/compute/test_agents_client.py
@@ -14,19 +14,18 @@
 
 import httplib2
 
+from oslo_serialization import jsonutils as json
 from oslotest import mockpatch
 
 from tempest.services.compute.json import agents_client
 from tempest.tests import base
 from tempest.tests import fake_auth_provider
-from tempest.tests import fake_config
 
 
 class TestAgentsClient(base.TestCase):
 
     def setUp(self):
         super(TestAgentsClient, self).setUp()
-        self.useFixture(fake_config.ConfigFixture())
         fake_auth = fake_auth_provider.FakeAuthProvider()
         self.client = agents_client.AgentsClient(fake_auth,
                                                  'compute', 'regionOne')
@@ -34,7 +33,7 @@
     def _test_list_agents(self, bytes_body=False):
         body = '{"agents": []}'
         if bytes_body:
-            body = bytes(body.encode('utf-8'))
+            body = body.encode('utf-8')
         expected = []
         response = (httplib2.Response({'status': 200}), body)
         self.useFixture(mockpatch.Patch(
@@ -42,8 +41,64 @@
             return_value=response))
         self.assertEqual(expected, self.client.list_agents())
 
+    def _test_create_agent(self, bytes_body=False):
+        expected = {"url": "http://foo.com", "hypervisor": "kvm",
+                    "md5hash": "md5", "version": "2", "architecture": "x86_64",
+                    "os": "linux", "agent_id": 1}
+        serialized_body = json.dumps({"agent": expected})
+        if bytes_body:
+            serialized_body = serialized_body.encode('utf-8')
+
+        mocked_resp = (httplib2.Response({'status': 200}), serialized_body)
+        self.useFixture(mockpatch.Patch(
+            'tempest.common.service_client.ServiceClient.post',
+            return_value=mocked_resp))
+        resp = self.client.create_agent(
+            url="http://foo.com", hypervisor="kvm", md5hash="md5",
+            version="2", architecture="x86_64", os="linux"
+        )
+        self.assertEqual(expected, resp)
+
+    def _test_delete_agent(self):
+        mocked_resp = (httplib2.Response({'status': 200}), None)
+        self.useFixture(mockpatch.Patch(
+            'tempest.common.service_client.ServiceClient.delete',
+            return_value=mocked_resp))
+        self.client.delete_agent("1")
+
+    def _test_update_agent(self, bytes_body=False):
+        expected = {"url": "http://foo.com", "md5hash": "md5", "version": "2",
+                    "agent_id": 1}
+        serialized_body = json.dumps({"agent": expected})
+        if bytes_body:
+            serialized_body = serialized_body.encode('utf-8')
+
+        mocked_resp = (httplib2.Response({'status': 200}), serialized_body)
+        self.useFixture(mockpatch.Patch(
+            'tempest.common.service_client.ServiceClient.put',
+            return_value=mocked_resp))
+        resp = self.client.update_agent(
+            "1", url="http://foo.com", md5hash="md5", version="2"
+        )
+        self.assertEqual(expected, resp)
+
     def test_list_agents_with_str_body(self):
         self._test_list_agents()
 
     def test_list_agents_with_bytes_body(self):
         self._test_list_agents(bytes_body=True)
+
+    def test_create_agent_with_str_body(self):
+        self._test_create_agent()
+
+    def test_create_agent_with_bytes_body(self):
+        self._test_create_agent(bytes_body=True)
+
+    def test_delete_agent(self):
+        self._test_delete_agent()
+
+    def test_update_agent_with_str_body(self):
+        self._test_update_agent()
+
+    def test_update_agent_with_bytes_body(self):
+        self._test_update_agent(bytes_body=True)