Claude-in-Chrome: list_connected_browsers returns 'not connected' despite extension installed and logged in

Description

list_connected_browsers consistently returns \"Browser extension is not connected\" despite completing all setup steps.

Environment

• Claude Code version: 2.1.162
• OS: macOS Darwin 25.5.0
• Launched with: --chrome flag

Steps taken

1. Installed the Claude browser extension from https://claude.ai/chrome
2. Logged into claude.ai with the same account as Claude Code
3. Restarted Chrome
4. Called list_connected_browsers via MCP tool

Expected behavior

Extension appears as a connected browser.

Actual behavior

Browser extension is not connected. Please ensure the Claude browser extension is installed and running (https://claude.ai/chrome), and that you are logged into claude.ai with the same account as Claude Code.

Notes

Issue persists across multiple attempts and sessions.