update scroll tool + system prompt

Author: tkattkat

evals/tasks/agent/steam_games.ts

@@ -12,7 +12,7 @@ export const steam_games: EvalFunction = async ({
 
     const agentResult = await agent.execute({
       instruction:
-        "Show most played games in Steam. And tell me the number of players in In game at this time",
+        "Show most played games in Steam. And tell me the number of players in game at this time",
       maxSteps: 30,
     });
 

lib/agent/tools/scroll.ts

@@ -6,10 +6,11 @@ export const createScrollTool = (page: Page) =>
   tool({
     description: "Scroll the page",
     parameters: z.object({
-      pixels: z.number().describe("Number of pixels to scroll"),
+      pixels: z.number().describe("Number of pixels to scroll up or down"),
+      direction: z.enum(["up", "down"]).describe("Direction to scroll"),
     }),
-    execute: async ({ pixels }) => {
-      await page.mouse.wheel(0, pixels);
+    execute: async ({ pixels, direction }) => {
+      await page.mouse.wheel(0, direction === "up" ? -pixels : pixels);
       return { success: true, pixels };
     },
   });

lib/handlers/stagehandAgentHandler.ts

@@ -172,7 +172,7 @@ IMPORTANT GUIDELINES:
 2. Use the screenshot tool to verify page state when needed
 3. Use appropriate tools for each action
 4. When the task is complete, use the "close" tool with taskComplete: true
-5. If the task cannot be completed, use "close" with taskComplete: fals
+5. If the task cannot be completed, use "close" with taskComplete: false
 
 TOOLS OVERVIEW:
 - screenshot: Take a compressed JPEG screenshot for quick visual context (use sparingly)
@@ -181,6 +181,7 @@ TOOLS OVERVIEW:
 - extract: Extract structured data
 - goto: Navigate to a URL
 - wait/navback/refresh: Control timing and navigation
+- scroll: Scroll the page x pixels up or down
 
 STRATEGY:
 - Prefer ariaTree to understand the page before acting; use screenshot for quick confirmation.