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

cortex-sdk
2.2.post3

This version was deleted from PyPI around 2023-11-08. Installing fails with:
$ pip3 install cortex-sdk==2.2.post3 ERROR: Could not find a version that satisfies the requirement cortex-sdk==2.2.post3
View other deleted versions of cortex-sdk

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/2023-11-07/ \ cortex-sdk==2.2.post3
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Or, download files manually

And install manually via pip:
cortex_sdk-2.2.post3-py3-none-any.whl (16.9KB)
cortex_sdk-2.2.post3.tar.gz (11.0KB)