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

gatekeeper-mcp-server
3.0.0b6

This version was deleted from PyPI around 2026-06-23. Installing fails with:
$ pip3 install gatekeeper-mcp-server==3.0.0b6 ERROR: Could not find a version that satisfies the requirement gatekeeper-mcp-server==3.0.0b6
View other deleted versions of gatekeeper-mcp-server

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/2026-06-22/ \ gatekeeper-mcp-server==3.0.0b6
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:
gatekeeper_mcp_server-3.0.0b6-py3-none-any.whl (77.0KB)
gatekeeper_mcp_server-3.0.0b6.tar.gz (66.4KB)