diff --git a/.circleci/config.yml b/.circleci/config.yml
index 53c5a8c658..8b7d0ae1fd 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -122,6 +122,8 @@ jobs:
             VITE_ENV='test' \
             REACT_APP_BACKEND_BASE_URL=$BACKEND_BASE_URL_TEST \
             REACT_APP_SLACK_CLIENT_ID=$SLACK_CLIENT_ID_TEST \
+            VITE_GOOGLE_PICKER_API_KEY=$VITE_GOOGLE_PICKER_API_KEY \
+            VITE_GOOGLE_APP_ID=$VITE_GOOGLE_APP_ID \
             NODE_ENV='staging' \
             npm run build
       - run:
@@ -165,6 +167,8 @@ jobs:
           command: |
             REACT_APP_BACKEND_BASE_URL=$APP_SLACK_BACKEND_BASE_URL_PROD \
             REACT_APP_SLACK_CLIENT_ID=$SLACK_CLIENT_ID_PROD \
+            VITE_GOOGLE_PICKER_API_KEY=$VITE_GOOGLE_PICKER_API_KEY \
+            VITE_GOOGLE_APP_ID=$VITE_GOOGLE_APP_ID \
             NODE_ENV='production' \
             npm run build
       - publish
diff --git a/apps/drive-integration/.env.example b/apps/drive-integration/.env.example
index 4908c1ded4..4d709d9b5c 100644
--- a/apps/drive-integration/.env.example
+++ b/apps/drive-integration/.env.example
@@ -12,3 +12,9 @@ VITE_ENABLE_MOCK_EDIT_MODAL=
 
 # Frontend (Vite): opt in to a local Agents API during development.
 VITE_LOCAL_AGENTS_API_BASE_URL=
+
+# Frontend (Vite): Google Picker API key (from GCP > APIs & Services > Credentials > Drive Integration API key).
+VITE_GOOGLE_PICKER_API_KEY=
+
+# Frontend (Vite): Google Cloud project number (991777691184 for the Contentful Google Docs App project).
+VITE_GOOGLE_APP_ID=
diff --git a/apps/drive-integration/src/hooks/useGoogleDocPicker.tsx b/apps/drive-integration/src/hooks/useGoogleDocPicker.tsx
index 3a37b8a197..ff4faca206 100644
--- a/apps/drive-integration/src/hooks/useGoogleDocPicker.tsx
+++ b/apps/drive-integration/src/hooks/useGoogleDocPicker.tsx
@@ -15,9 +15,9 @@ type UseGoogleDocsPickerOptions = {
   onCancel?: () => void;
 };
 
-const GOOGLE_PICKER_API_KEY = '';
+const GOOGLE_PICKER_API_KEY = import.meta.env.VITE_GOOGLE_PICKER_API_KEY ?? '';
 
-const GOOGLE_APP_ID = 1;
+const GOOGLE_APP_ID = import.meta.env.VITE_GOOGLE_APP_ID ?? '';
 
 // These are already exposed by google in the network even if they were hidden as environment variables
 // and google acknowledges that these are okay to be public and that restrictions come from defining the
diff --git a/apps/drive-integration/src/hooks/useWorkflowAgent.ts b/apps/drive-integration/src/hooks/useWorkflowAgent.ts
index 8d35961c28..662f85235b 100644
--- a/apps/drive-integration/src/hooks/useWorkflowAgent.ts
+++ b/apps/drive-integration/src/hooks/useWorkflowAgent.ts
@@ -123,6 +123,14 @@ const getBackendWorkflowFailureReason = (runData: AgentRunData): WorkflowFailure
     return WorkflowFailureReason.GOOGLE_DRIVE_AUTH_EXPIRED;
   }
 
+  if (workflowFailure.code === WorkflowFailureReason.GOOGLE_DOCS_NOT_FOUND) {
+    return WorkflowFailureReason.GOOGLE_DOCS_NOT_FOUND;
+  }
+
+  if (workflowFailure.code === WorkflowFailureReason.AI_SERVICE_UNAVAILABLE) {
+    return WorkflowFailureReason.AI_SERVICE_UNAVAILABLE;
+  }
+
   if (workflowFailure.code === WorkflowFailureReason.GENERIC) {
     return WorkflowFailureReason.GENERIC;
   }
@@ -138,6 +146,14 @@ const getWorkflowFailureMessage = (
     return ERROR_MESSAGES.GOOGLE_DRIVE_AUTH_ERROR;
   }
 
+  if (failureReason === WorkflowFailureReason.GOOGLE_DOCS_NOT_FOUND) {
+    return ERROR_MESSAGES.GOOGLE_DOCS_NOT_FOUND;
+  }
+
+  if (failureReason === WorkflowFailureReason.AI_SERVICE_UNAVAILABLE) {
+    return ERROR_MESSAGES.AI_SERVICE_UNAVAILABLE;
+  }
+
   return getRunErrorMessage(runData);
 };
 
diff --git a/apps/drive-integration/src/locations/Page/components/mainpage/ModalOrchestrator.tsx b/apps/drive-integration/src/locations/Page/components/mainpage/ModalOrchestrator.tsx
index 1311789f2e..b343e441c0 100644
--- a/apps/drive-integration/src/locations/Page/components/mainpage/ModalOrchestrator.tsx
+++ b/apps/drive-integration/src/locations/Page/components/mainpage/ModalOrchestrator.tsx
@@ -163,6 +163,30 @@ export const ModalOrchestrator = forwardRef<ModalOrchestratorHandle, ModalOrches
         return;
       }
 
+      if (
+        error instanceof WorkflowRunError &&
+        error.reason === WorkflowFailureReason.GOOGLE_DOCS_NOT_FOUND
+      ) {
+        setPreviewErrorState({
+          reason: WorkflowFailureReason.GOOGLE_DOCS_NOT_FOUND,
+          title: 'Document not found',
+          message: ERROR_MESSAGES.GOOGLE_DOCS_NOT_FOUND,
+        });
+        return;
+      }
+
+      if (
+        error instanceof WorkflowRunError &&
+        error.reason === WorkflowFailureReason.AI_SERVICE_UNAVAILABLE
+      ) {
+        setPreviewErrorState({
+          reason: WorkflowFailureReason.AI_SERVICE_UNAVAILABLE,
+          title: 'AI service temporarily unavailable',
+          message: ERROR_MESSAGES.AI_SERVICE_UNAVAILABLE,
+        });
+        return;
+      }
+
       setPreviewErrorState({
         reason: WorkflowFailureReason.GENERIC,
         title: 'Unable to generate preview',
diff --git a/apps/drive-integration/src/types/workflow.ts b/apps/drive-integration/src/types/workflow.ts
index ea1ff0b7e1..892b391913 100644
--- a/apps/drive-integration/src/types/workflow.ts
+++ b/apps/drive-integration/src/types/workflow.ts
@@ -13,6 +13,8 @@ export enum RunStatus {
 export enum WorkflowFailureReason {
   GENERIC = 'generic',
   GOOGLE_DRIVE_AUTH_EXPIRED = 'google-drive-auth-expired',
+  GOOGLE_DOCS_NOT_FOUND = 'google-docs-not-found',
+  AI_SERVICE_UNAVAILABLE = 'ai-service-unavailable',
 }
 
 export interface WorkflowFailure {
diff --git a/apps/drive-integration/src/utils/constants/messages.ts b/apps/drive-integration/src/utils/constants/messages.ts
index c598a66bb6..62d615584f 100644
--- a/apps/drive-integration/src/utils/constants/messages.ts
+++ b/apps/drive-integration/src/utils/constants/messages.ts
@@ -8,6 +8,10 @@ export const ERROR_MESSAGES = {
   GENERIC_ERROR: 'This preview could not be completed. Please start again.',
   GOOGLE_DRIVE_AUTH_ERROR:
     'Your Drive connection has expired or is no longer valid. Reconnect your account to continue generating a preview.',
+  GOOGLE_DOCS_NOT_FOUND:
+    'Google Doc not found. Make sure the document exists and your Google account has access to it.',
+  AI_SERVICE_UNAVAILABLE:
+    'The AI service is temporarily unavailable. Please try again in a few minutes.',
 } as const;
 
 export const SUCCESS_MESSAGES = {