diff --git a/contrib/buildbot/phabricator_wrapper.py b/contrib/buildbot/phabricator_wrapper.py
--- a/contrib/buildbot/phabricator_wrapper.py
+++ b/contrib/buildbot/phabricator_wrapper.py
@@ -484,3 +484,39 @@
             buildTargetPHID=build_target.phid,
             type=harbormaster_build_status_mapping[build_target.status()]
         )
+
+    def get_object_token(self, object_PHID):
+        """ Return the current token set by the current user on target object """
+        tokens = self.token.given(
+            authorPHIDs=[self.get_current_user_phid()],
+            objectPHIDs=[object_PHID],
+            tokenPHIDs=[],
+        )
+
+        if not tokens:
+            return ""
+
+        # There should be no more than a single token from the same user for the
+        # same object.
+        if len(tokens) > 1:
+            self.logger.info(
+                "Found {} tokens for user {} on object {}: {}".format(
+                    len(tokens),
+                    self.get_current_user_phid(),
+                    object_PHID,
+                    tokens,
+                )
+            )
+
+        return tokens[0]["tokenPHID"]
+
+    def set_object_token(self, object_PHID, token_PHID=None):
+        """ Award or rescind a token for the target object """
+        # If no token is given, rescind any previously awarded token
+        if token_PHID is None:
+            token_PHID = ""
+
+        self.token.give(
+            objectPHID=object_PHID,
+            tokenPHID=token_PHID,
+        )
diff --git a/contrib/buildbot/test/mocks/phabricator.py b/contrib/buildbot/test/mocks/phabricator.py
--- a/contrib/buildbot/test/mocks/phabricator.py
+++ b/contrib/buildbot/test/mocks/phabricator.py
@@ -54,6 +54,8 @@
     phab.project = mock.Mock()
     phab.project.search.return_value = Result([])
 
+    phab.token = mock.Mock()
+
     phab.transaction = mock.Mock()
     phab.transaction.search.return_value = Result([])
 
diff --git a/contrib/buildbot/test/test_phabricator.py b/contrib/buildbot/test/test_phabricator.py
--- a/contrib/buildbot/test/test_phabricator.py
+++ b/contrib/buildbot/test/test_phabricator.py
@@ -429,6 +429,76 @@
         with self.assertRaisesRegex(AssertionError, "Failed to edit panel"):
             call_set_text_panel_content()
 
+    def test_get_object_token(self):
+        user_PHID = "PHID-USER-foobarbaz"
+        self.phab.user.whoami.return_value = {
+            "phid": user_PHID,
+        }
+
+        object_PHID = "PHID-DREV-abcdef"
+
+        def assert_token_given_called():
+            self.phab.token.given.assert_called_with(
+                authorPHIDs=[user_PHID],
+                objectPHIDs=[object_PHID],
+                tokenPHIDs=[],
+            )
+
+        # There is no token for this object
+        self.phab.token.given.return_value = []
+        token = self.phab.get_object_token(object_PHID)
+        assert_token_given_called()
+        self.assertEqual(token, "")
+
+        # There is exactly 1 token for this object
+        self.phab.token.given.return_value = [
+            {
+                "authorPHID": user_PHID,
+                "objectPHID": object_PHID,
+                "tokenPHID": "PHID-TOKN-like-1",
+                "dateCreated": 0,
+            },
+        ]
+        token = self.phab.get_object_token(object_PHID)
+        assert_token_given_called()
+        self.assertEqual(token, "PHID-TOKN-like-1")
+
+        # If there is more than a single token only the first one is returned
+        self.phab.token.given.return_value = [
+            {
+                "authorPHID": user_PHID,
+                "objectPHID": object_PHID,
+                "tokenPHID": "PHID-TOKN-like-1",
+                "dateCreated": 0,
+            },
+            {
+                "authorPHID": user_PHID,
+                "objectPHID": object_PHID,
+                "tokenPHID": "PHID-TOKN-like-2",
+                "dateCreated": 1,
+            },
+        ]
+        token = self.phab.get_object_token(object_PHID)
+        assert_token_given_called()
+        self.assertEqual(token, "PHID-TOKN-like-1")
+
+    def test_set_object_token(self):
+        object_PHID = "PHID-DREV-abcdef"
+
+        def assert_token_give_called(token_PHID):
+            self.phab.token.give.assert_called_with(
+                objectPHID=object_PHID,
+                tokenPHID=token_PHID,
+            )
+
+        # Rescind any previoulsy awarded token
+        self.phab.set_object_token(object_PHID)
+        assert_token_give_called("")
+
+        token_PHID = "PHID-TOKN-like-1"
+        self.phab.set_object_token(object_PHID, token_PHID)
+        assert_token_give_called(token_PHID)
+
 
 if __name__ == '__main__':
     unittest.main()