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

relace-mcp
0.2.3a1

This version was deleted from PyPI around 2026-01-20. Installing fails with:
$ pip3 install relace-mcp==0.2.3a1 ERROR: Could not find a version that satisfies the requirement relace-mcp==0.2.3a1
View other deleted versions of relace-mcp

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/2026-01-19/ \ relace-mcp==0.2.3a1
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:
relace_mcp-0.2.3a1-py3-none-any.whl (134.0KB)
relace_mcp-0.2.3a1.tar.gz (153.0KB)