You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
guardrails-ai was reported malicious
OSV:MAL-2026-3607 - Malicious code in guardrails-ai (PyPI)

guardrails-ai
0.5.0a6

This version was deleted from PyPI around 2026-05-12. Installing fails with:
$ pip3 install guardrails-ai==0.5.0a6 ERROR: Could not find a version that satisfies the requirement guardrails-ai==0.5.0a6
View other deleted versions of guardrails-ai

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/2026-05-11/ \ guardrails-ai==0.5.0a6
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Or, download files manually

And install manually via pip:
guardrails_ai-0.5.0a6-py3-none-any.whl (167.2KB)
guardrails_ai-0.5.0a6.tar.gz (127.3KB)