steamcmd

Install command: 
brew install --cask steamcmd

Name: SteamCMD

Command-line client for Steam

https://developer.valvesoftware.com/wiki/SteamCMD

Cask JSON API: /api/cask/steamcmd.json

Cask code: steamcmd.rb on GitHub

Current version: 1759461699

Requirements: macOS >= 10.15

Analytics:

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steamcmd 264
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steamcmd 794
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steamcmd 2,723