diff --git a/apps/sim/tools/types.ts b/apps/sim/tools/types.ts
index 81506af67..3fecea9c7 100644
--- a/apps/sim/tools/types.ts
+++ b/apps/sim/tools/types.ts
@@ -71,7 +71,7 @@ export interface ToolConfig<P = any, R = any> {
       }
     }
   >
-
+  // Output schema - what this tool produces
   outputs?: Record<
     string,
     {
@@ -79,8 +79,8 @@ export interface ToolConfig<P = any, R = any> {
       description?: string
       optional?: boolean
       fileConfig?: {
-        mimeType?: string
-        extension?: string
+        mimeType?: string // Expected MIME type for file outputs
+        extension?: string // Expected file extension
       }
       items?: {
         type: string