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

arccos-api
0.1.4

This version was deleted from PyPI around 2026-03-21. Installing fails with:
$ pip3 install arccos-api==0.1.4 ERROR: Could not find a version that satisfies the requirement arccos-api==0.1.4
View other deleted versions of arccos-api

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/2026-03-20/ \ arccos-api==0.1.4
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Or, download files manually

And install manually via pip:
arccos_api-0.1.4-py3-none-any.whl (30.5KB)
arccos_api-0.1.4.tar.gz (40.3KB)