[BUG] macOS 15.7.7 triggered CORS error

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Just released today macOS update causes a "could not load connectors directory". Console log below:

Sonnet 4.6 says it's you:
The macOS 15.7.7 update shipped a newer version of system WebKit (which WKWebView — used by the Claude app — is built on). The newer WebKit is apparently stricter or different in how it handles CORS preflights for this request, and Anthropic's API endpoint isn't configured to handle it correctly under the new behavior.

Hope this helps.

What Should Happen?

Claude should load the connectors

Error Messages/Logs

2026-05-11 17:27:33 [error] Access to fetch at 'https://api.anthropic.com/api/directory/servers?limit=500&visibility=commercial%2Chealth%2Cgsuite-google' from origin 'https://claude.ai/' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Steps to Reproduce

Just open the macOS application (running on an iMac Pro Intel if that matters)

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude 1.6608.2 (ebf1a1) 2026-05-08T23:17:27.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_