diff --git a/zulip_bots/zulip_bots/bots/front/fixtures/archive_error.json b/zulip_bots/zulip_bots/bots/front/fixtures/archive_error.json
new file mode 100644
index 0000000..7833a20
--- /dev/null
+++ b/zulip_bots/zulip_bots/bots/front/fixtures/archive_error.json
@@ -0,0 +1,21 @@
+{
+  "request": {
+    "method": "PATCH",
+    "api_url": "https://api2.frontapp.com/conversations/cnv_kqatm2",
+    "headers": {
+      "Authorization": "Bearer TEST"
+    },
+    "json": {
+      "status": "archived"
+    }
+  },
+  "response": {
+      "error": {
+        "title": "Unauthenticated",
+        "message": "Provided token is not a JSON Web Token"
+      }
+  },
+  "response-headers": {
+      "status": 401
+  }
+}
diff --git a/zulip_bots/zulip_bots/bots/front/fixtures/comment_error.json b/zulip_bots/zulip_bots/bots/front/fixtures/comment_error.json
new file mode 100644
index 0000000..23ffa03
--- /dev/null
+++ b/zulip_bots/zulip_bots/bots/front/fixtures/comment_error.json
@@ -0,0 +1,22 @@
+{
+  "request": {
+    "method": "POST",
+    "api_url": "https://api2.frontapp.com/conversations/cnv_kqatm2/comments",
+    "headers": {
+      "Authorization": "Bearer TEST"
+    },
+    "json": {
+      "author_id": "alt:email:leela@planet-express.com",
+      "body": "@bender, I thought you were supposed to be cooking for this party."
+    }
+  },
+  "response": {
+      "error": {
+        "title": "Unauthenticated",
+        "message": "Provided token is not a JSON Web Token"
+      }
+  },
+  "response-headers": {
+      "status": 401
+  }
+}
diff --git a/zulip_bots/zulip_bots/bots/front/fixtures/delete_error.json b/zulip_bots/zulip_bots/bots/front/fixtures/delete_error.json
new file mode 100644
index 0000000..e726777
--- /dev/null
+++ b/zulip_bots/zulip_bots/bots/front/fixtures/delete_error.json
@@ -0,0 +1,21 @@
+{
+  "request": {
+    "method": "PATCH",
+    "api_url": "https://api2.frontapp.com/conversations/cnv_kqatm2",
+    "headers": {
+      "Authorization": "Bearer TEST"
+    },
+    "json": {
+      "status": "deleted"
+    }
+  },
+  "response": {
+      "error": {
+        "title": "Unauthenticated",
+        "message": "Provided token is not a JSON Web Token"
+      }
+  },
+  "response-headers": {
+      "status": 401
+  }
+}
diff --git a/zulip_bots/zulip_bots/bots/front/fixtures/open_error.json b/zulip_bots/zulip_bots/bots/front/fixtures/open_error.json
new file mode 100644
index 0000000..0bfcc2c
--- /dev/null
+++ b/zulip_bots/zulip_bots/bots/front/fixtures/open_error.json
@@ -0,0 +1,21 @@
+{
+  "request": {
+    "method": "PATCH",
+    "api_url": "https://api2.frontapp.com/conversations/cnv_kqatm2",
+    "headers": {
+      "Authorization": "Bearer TEST"
+    },
+    "json": {
+      "status": "open"
+    }
+  },
+  "response": {
+      "error": {
+        "title": "Unauthenticated",
+        "message": "Provided token is not a JSON Web Token"
+      }
+  },
+  "response-headers": {
+      "status": 401
+  }
+}
diff --git a/zulip_bots/zulip_bots/bots/front/fixtures/spam_error.json b/zulip_bots/zulip_bots/bots/front/fixtures/spam_error.json
new file mode 100644
index 0000000..6b578d6
--- /dev/null
+++ b/zulip_bots/zulip_bots/bots/front/fixtures/spam_error.json
@@ -0,0 +1,21 @@
+{
+  "request": {
+    "method": "PATCH",
+    "api_url": "https://api2.frontapp.com/conversations/cnv_kqatm2",
+    "headers": {
+      "Authorization": "Bearer TEST"
+    },
+    "json": {
+      "status": "spam"
+    }
+  },
+  "response": {
+      "error": {
+        "title": "Unauthenticated",
+        "message": "Provided token is not a JSON Web Token"
+      }
+  },
+  "response-headers": {
+      "status": 401
+  }
+}
diff --git a/zulip_bots/zulip_bots/bots/front/test_front.py b/zulip_bots/zulip_bots/bots/front/test_front.py
index 4f8efa1..97c9c65 100644
--- a/zulip_bots/zulip_bots/bots/front/test_front.py
+++ b/zulip_bots/zulip_bots/bots/front/test_front.py
@@ -11,6 +11,12 @@ class TestFrontBot(BotTestCase, DefaultTests):
         message['sender_email'] = "leela@planet-express.com"
         return message
 
+    def test_bot_invalid_api_key(self) -> None:
+        invalid_api_key = ''
+        with self.mock_config_info({'api_key': invalid_api_key}):
+            with self.assertRaises(KeyError):
+                bot, bot_handler = self._get_handlers()
+
     def test_bot_responds_to_empty_message(self) -> None:
         with self.mock_config_info({'api_key': "TEST"}):
             self.verify_reply("", "Unknown command. Use `help` for instructions.")
@@ -28,27 +34,53 @@ class TestFrontBot(BotTestCase, DefaultTests):
             with self.mock_http_conversation('archive'):
                 self.verify_reply('archive', "Conversation was archived.")
 
+    def test_archive_error(self) -> None:
+        with self.mock_config_info({'api_key': "TEST"}):
+            with self.mock_http_conversation('archive_error'):
+                self.verify_reply('archive', 'Something went wrong.')
+
     def test_delete(self) -> None:
         with self.mock_config_info({'api_key': "TEST"}):
             with self.mock_http_conversation('delete'):
                 self.verify_reply('delete', "Conversation was deleted.")
 
+    def test_delete_error(self) -> None:
+        with self.mock_config_info({'api_key': "TEST"}):
+            with self.mock_http_conversation('delete_error'):
+                self.verify_reply('delete', 'Something went wrong.')
+
     def test_spam(self) -> None:
         with self.mock_config_info({'api_key': "TEST"}):
             with self.mock_http_conversation('spam'):
                 self.verify_reply('spam', "Conversation was marked as spam.")
 
+    def test_spam_error(self) -> None:
+        with self.mock_config_info({'api_key': "TEST"}):
+            with self.mock_http_conversation('spam_error'):
+                self.verify_reply('spam', 'Something went wrong.')
+
     def test_restore(self) -> None:
         with self.mock_config_info({'api_key': "TEST"}):
             with self.mock_http_conversation('open'):
                 self.verify_reply('open', "Conversation was restored.")
 
+    def test_restore_error(self) -> None:
+        with self.mock_config_info({'api_key': "TEST"}):
+            with self.mock_http_conversation('open_error'):
+                self.verify_reply('open', 'Something went wrong.')
+
     def test_comment(self) -> None:
         body = "@bender, I thought you were supposed to be cooking for this party."
         with self.mock_config_info({'api_key': "TEST"}):
             with self.mock_http_conversation('comment'):
                 self.verify_reply("comment " + body, "Comment was sent.")
 
+    def test_comment_error(self) -> None:
+        body = "@bender, I thought you were supposed to be cooking for this party."
+        with self.mock_config_info({'api_key': "TEST"}):
+            with self.mock_http_conversation('comment_error'):
+                self.verify_reply('comment ' + body, 'Something went wrong.')
+
 class TestFrontBotWrongTopic(BotTestCase, DefaultTests):
     bot_name = 'front'