[BUG] Submission of prompt via URL parameter stopped working

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?

Hey, this doesn't strictly concern claude code, but the calude.ai web UI. Until the last day, you could submit prompts via URL parameter. E.g.

https://claude.ai/new?q=what's%20the%20capital%20of%20france

But it stopped working maybe 12 or so hours ago, which really sucks (I use a program to open my prompts in 5 different LLMs simultaneously, claude is one of them)

Anyone know if the URL parameter has changed from q to something else, or what's going on? (perhaps a bug)

What Should Happen?

Claude.ai should start thinking about its answer to the prompt submitted via the URL, but it doesn't any more :(

Error Messages/Logs

Nothing, it just sits there, waiting for a prompt.

Steps to Reproduce

Try this URL https://claude.ai/new?q=what%27s%20the%20capital%20of%20france

Prior to ~12 hours ago, claude would answer the url encoded question. But this functionality doesn't appear to be working atm.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

NA

Platform

Other

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_