You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

proofkit-cli
0.25.0

This version was deleted from PyPI around 2026-05-09. Installing fails with:
$ pip3 install proofkit-cli==0.25.0 ERROR: Could not find a version that satisfies the requirement proofkit-cli==0.25.0
View other deleted versions of proofkit-cli

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/2026-05-08/ \ proofkit-cli==0.25.0
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Or, download files manually

And install manually via pip:
proofkit_cli-0.25.0-py3-none-any.whl (107.9KB)
proofkit_cli-0.25.0.tar.gz (109.9KB)