diff --git a/apps/rowboat/app/projects/[projectId]/copilot/components/messages.tsx b/apps/rowboat/app/projects/[projectId]/copilot/components/messages.tsx
index 928380d2..6a699f37 100644
--- a/apps/rowboat/app/projects/[projectId]/copilot/components/messages.tsx
+++ b/apps/rowboat/app/projects/[projectId]/copilot/components/messages.tsx
@@ -112,15 +112,27 @@ function enrich(response: string): z.infer<typeof CopilotResponsePart> {
                 };
             }
 
+            const actionPayload = {
+                action: metadata.action as 'create_new' | 'edit' | 'delete',
+                config_type: metadata.config_type as 'tool' | 'agent' | 'prompt' | 'pipeline' | 'start_agent' | 'one_time_trigger' | 'recurring_trigger' | 'external_trigger',
+                name: metadata.name,
+                change_description: jsonData.change_description || '',
+                config_changes: result.changes
+            };
+
+            if (actionPayload.config_type === 'external_trigger' && actionPayload.action === 'edit') {
+                return {
+                    type: 'action',
+                    action: {
+                        ...actionPayload,
+                        error: "Editing external triggers isn't supported. Delete the trigger and create a new one with the updated settings—I can take care of that for you if you'd like."
+                    }
+                };
+            }
+
             return {
                 type: 'action',
-                action: {
-                    action: metadata.action as 'create_new' | 'edit' | 'delete',
-                    config_type: metadata.config_type as 'tool' | 'agent' | 'prompt' | 'pipeline' | 'start_agent' | 'one_time_trigger' | 'recurring_trigger' | 'external_trigger',
-                    name: metadata.name,
-                    change_description: jsonData.change_description || '',
-                    config_changes: result.changes
-                }
+                action: actionPayload
             };
         }
     } catch (e) {
diff --git a/apps/rowboat/src/application/lib/copilot/copilot_multi_agent_build.ts b/apps/rowboat/src/application/lib/copilot/copilot_multi_agent_build.ts
index d873e7fc..c9d2d19b 100644
--- a/apps/rowboat/src/application/lib/copilot/copilot_multi_agent_build.ts
+++ b/apps/rowboat/src/application/lib/copilot/copilot_multi_agent_build.ts
@@ -201,6 +201,8 @@ Note: The agents have access to a tool called 'Generate Image'. This won't show
 
 Triggers are automated mechanisms that activate your agents at specific times or intervals. Evaluate every user request for automation or event driven tasks. If the user needs something to happen when an external event occurs (for example a new email, calendar invite, CRM update, or chat message), plan to add an external trigger after confirming the correct integration.
 
+IMPORTANT: External triggers cannot be edited once created. If the user wants to change an external trigger, you must explain that the only option is to delete the existing trigger and create a new one with the updated configuration. Always offer to perform the delete-and-recreate workflow for them.
+
 ### Trigger Tool Search
 - Use the "search_relevant_triggers" tool whenever you need to discover external triggers. Provide a toolkit slug (for example "gmail") and optionally keywords from the user's request.
 - Do not invent trigger names. Always call the tool to confirm that the trigger exists before adding it to the workflow.