glitch.com shutting down: enumerate and SCN the repos

The glitch.com service is shutting down its web hosting. Sounds like the code may remain up for a while, but the blog post isn't clear about that.

We’ll be ending web hosting for your apps on Glitch on July 8, 2025.

To enumerate all projects, fetch https://api.glitch.com/v1/projects/?limit=1000 and follow the link in the nextPage value, until it is null or an empty string. The default order is by ascending creation date, so just before the deadline, reload the last URL you got, to find out if any new projects were created.

The projects are then in the items array, unfortunately the gitRepoUrl value in each project item is always null. So take the domain value and SCN https://api.glitch.com/git/$domain instead. The plain URLs return HTTP 404 errors, but work in git ls-remote. Some URLs will give HTTP 403 errors and others will work correctly. There is no indication in the data whether or not they will give an error.