From df4e2f9f151803decbb1555b5278e31a558814b0 Mon Sep 17 00:00:00 2001
From: Laith Weinberger <70768382+laithrw@users.noreply.github.com>
Date: Sun, 12 Apr 2026 11:34:39 -0400
Subject: [PATCH] fix: handle BrokenPipeError gracefully when MCP client
 disconnects

---
 browser_use/mcp/server.py | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/browser_use/mcp/server.py b/browser_use/mcp/server.py
index bb4e9be7b..d27d1f40c 100644
--- a/browser_use/mcp/server.py
+++ b/browser_use/mcp/server.py
@@ -1227,18 +1227,21 @@ class BrowserUseServer:
 			raise RuntimeError('MCP stdio transport requires stdin, but this process was launched without one.')
 
 		async with mcp.server.stdio.stdio_server() as (read_stream, write_stream):
-			await self.server.run(
-				read_stream,
-				write_stream,
-				InitializationOptions(
-					server_name='browser-use',
-					server_version='0.1.0',
-					capabilities=self.server.get_capabilities(
-						notification_options=NotificationOptions(),
-						experimental_capabilities={},
+			try:
+				await self.server.run(
+					read_stream,
+					write_stream,
+					InitializationOptions(
+						server_name='browser-use',
+						server_version='0.1.0',
+						capabilities=self.server.get_capabilities(
+							notification_options=NotificationOptions(),
+							experimental_capabilities={},
+						),
 					),
-				),
-			)
+				)
+			except BrokenPipeError:
+				logger.warning('MCP client disconnected while writing to stdio; shutting down server cleanly.')
 
 
 async def main(session_timeout_minutes: int = 10):