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

curd-python
0.7.1b0

This version was deleted from PyPI around 2026-04-17. Installing fails with:
$ pip3 install curd-python==0.7.1b0 ERROR: Could not find a version that satisfies the requirement curd-python==0.7.1b0

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/2026-04-16/ \ curd-python==0.7.1b0
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