You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
mfq-private-encoder was reported malicious
OSV:MAL-2026-10758 - Malicious code in mfq-private-encoder (PyPI)

mfq-private-encoder

This package was deleted from PyPI around 2026-07-21. Installing fails with:
$ pip3 install mfq-private-encoder ERROR: Could not find a version that satisfies the requirement mfq-private-encoder (from versions: none) ERROR: No matching distribution found for mfq-private-encoder

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pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2026-07-20/ \ mfq-private-encoder
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1.0.0