Fixing Chrome DevTools MCP's 'DevToolsActivePort' error
From the community · not tested by us
Connecting Codex to their signed-in Chrome, Chrome DevTools MCP kept saying it couldn't find DevToolsActivePort; the real cause was a macOS permission that belonged to a different app than expected.
Details
Posted by@darshjoshii
DateOct 18, 2026
Category🧪 Web dev & testing
Found viaX
Summary written by ToolPassed from the public post. Claims are the poster’s; we haven’t reproduced this.