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Getting Started

Zwischen installs as a Python package, wires itself into your coding agent as a set of hooks and an MCP server, and runs a local daemon that manages communication with the Zwischen server. Setup takes about two minutes.

Requirements

  • Python 3.10+
  • A supported host: Claude Code or Codex. The installer sets up every host it finds, and both can be installed side by side.
  • A Zwischen API key from zwischen.ai

Steps

  1. Installation – Install the package and run the setup wizard.
  2. First session – Start your agent and verify that the reviewer is attached.
  3. Codex – Extra setup and behavior notes if you use Codex.
  4. Uninstalling – Remove Zwischen if needed.

Already installed?

If Zwischen is already installed and you want to understand how it works, skip to The Mental Model.