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

summary-stack-mcp-core
2026.4.8.1344

This version was deleted from PyPI around 2026-04-13. Installing fails with:
$ pip3 install summary-stack-mcp-core==2026.4.8.1344 ERROR: Could not find a version that satisfies the requirement summary-stack-mcp-core==2026.4.8.1344
View other deleted versions of summary-stack-mcp-core

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/2026-04-12/ \ summary-stack-mcp-core==2026.4.8.1344
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:
summary_stack_mcp_core-2026.4.8.1344-py3-none-any.whl (8.0KB)
summary_stack_mcp_core-2026.4.8.1344.tar.gz (7.4KB)