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

langchain-adk

This package was deleted from PyPI around 2026-04-14. Installing fails with:
$ pip3 install langchain-adk ERROR: Could not find a version that satisfies the requirement langchain-adk (from versions: none) ERROR: No matching distribution found for langchain-adk

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/2026-04-13/ \ langchain-adk
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Or, download files manually

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0.1.0
0.1.1
0.1.2
0.1.3
0.2.0
0.2.1
0.2.2
0.3.0
0.3.3
0.3.4
0.3.6
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0.3.8
0.3.9
0.3.13
0.3.14