You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
neptune-cli was reported malicious
OSV:MAL-2025-6557 - Malicious code in neptune-cli (PyPI)

neptune-cli
0.0.1

This version was deleted from PyPI around 2025-07-09. Installing fails with:
$ pip3 install neptune-cli==0.0.1 ERROR: Could not find a version that satisfies the requirement neptune-cli==0.0.1
View other deleted versions of neptune-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/2025-07-08/ \ neptune-cli==0.0.1
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:
neptune_cli-0.0.1.tar.gz (1.4KB)