You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
jsonschema-utf8 was reported malicious
OSV:MAL-2025-192436 - Malicious code in jsonschema-utf8 (PyPI)

jsonschema-utf8
4.1.2

This version was deleted from PyPI around 2025-12-11. Installing fails with:
$ pip3 install jsonschema-utf8==4.1.2 ERROR: Could not find a version that satisfies the requirement jsonschema-utf8==4.1.2
View other deleted versions of jsonschema-utf8

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-12-10/ \ jsonschema-utf8==4.1.2
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
jsonschema_utf8-4.1.2-py3-none-any.whl (5.4MB)
jsonschema_utf8-4.1.2.tar.gz (5.7MB)