[BUG] Unable to authenticate my monday.com account with claude.ai using their Oauth flow

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?

I tried it from both Claude code CLI and Claude Desktop app but I am not able to authenticate Claude.ai with Monday.com, when I goto the flow I see the "Authorize" button is disabled in the flow and I can't complete it. Please help.

What Should Happen?

I should be able to authorize claude.ai with my monday.com account.

Error Messages/Logs

Steps to Reproduce

I tried it from both Claude code CLI and Claude Desktop app but I am not able to authenticate Claude.ai with Monday.com, when I goto the flow I see the "Authorize" button is disabled in the flow and I can't complete it. Please help.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Sonnet 4.6 (claude-sonnet-4-6)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_