From 16468a855d833ea5b22fa872cffa528cfdfa685e Mon Sep 17 00:00:00 2001
From: cynthialong0-0 <82900738+cynthialong0-0@users.noreply.github.com>
Date: Wed, 1 Apr 2026 10:52:18 -0700
Subject: [PATCH] feat(core): update browser agent prompt to check open pages
 first when bringing up (#24431)

---
 packages/core/src/agents/browser/browserAgentDefinition.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/core/src/agents/browser/browserAgentDefinition.ts b/packages/core/src/agents/browser/browserAgentDefinition.ts
index 47077d825e..d0afa2c4b3 100644
--- a/packages/core/src/agents/browser/browserAgentDefinition.ts
+++ b/packages/core/src/agents/browser/browserAgentDefinition.ts
@@ -190,7 +190,7 @@ export const BrowserAgentDefinition = (
 \${task}
 </task>
 
-First, use new_page to open the relevant URL. Then call take_snapshot to see the page and proceed with your task.`,
+First, use <list_pages/> to check if there are any existing pages that can fulfill the user's request. If not, you MUST use <new_page/> to open the relevant URL unless the user explicitly provides different instructions.`,
       systemPrompt: buildBrowserSystemPrompt(
         visionEnabled,
         config.getBrowserAgentConfig().customConfig.allowedDomains,