diff --git a/docs/tool-reference.md b/docs/tool-reference.md
index 1836c924..0a6b08b6 100644
--- a/docs/tool-reference.md
+++ b/docs/tool-reference.md
@@ -284,7 +284,7 @@ so returned values have to JSON-serializable.
 **Parameters:**
 
 - **args** (array) _(optional)_: An optional list of arguments to pass to the function.
-- **function** (string) **(required)**: A JavaScript function to run in the currently selected page.
+- **function** (string) **(required)**: A JavaScript function to run in the currently selected page. Just define the function and let the tool do the execution.
   Example without arguments: `() => {
   return document.title
 }` or `async () => {
diff --git a/src/tools/script.ts b/src/tools/script.ts
index be46de55..0e70526b 100644
--- a/src/tools/script.ts
+++ b/src/tools/script.ts
@@ -19,7 +19,7 @@ so returned values have to JSON-serializable.`,
   },
   schema: {
     function: z.string().describe(
-      `A JavaScript function to run in the currently selected page.
+      `A JavaScript function to run in the currently selected page. Just define the function and let the tool do the execution.
 Example without arguments: \`() => {
   return document.title
 }\` or \`async () => {