Supabase MCP Auth does not work with updated Claude Code

[dmsakamoto]

Bug report

• I confirm this is a bug with Supabase, not with my own application.
• I confirm I have searched the Docs, GitHub Discussions, and Discord.

Describe the bug

A clear and concise description of what the bug is.

To Reproduce

Steps to reproduce the behavior, please provide code snippets or a repository:

1. Run '/MCP' in Claude Code. The URL prints '{"message": "Unrecognized client_id"}' and will not let me log in

Expected behavior

Ability to log in

Screenshots

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System information

• OS: macOS

Additional context

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[raghavaro]

I am getting this issue a lot as well.