Claude Code mod
katzensteg
Game and HTML panels backed by the headless Katzensteg WM. Needs CLAUDE_CODE_ENABLE_FUNCTION_HOOKS=1.
Install
git clone https://github.com/rjwittams/katzensteg.git
claude --plugin-dir ./katzensteg/tools/claude-code-pluginThe repo has no marketplace file, so load the plugin folder directly with --plugin-dir.
What it can access
- Reach
- L3Network: network, runs processes, writes files, sets env vars, drives Claude, reads files, reads env vars, persists state, draws
- Sees
- the system prompt, ? calls
- Draws in
AbovePromptPane- Hooks
session.startcommand.runprompt.sectiontool.callui.closeui.scrollui.messageui.render
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- rjwittams/katzensteg
- Folder
tools/claude-code-plugin- Last updated
- 24 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is katzensteg?
Game and HTML panels backed by the headless Katzensteg WM. Needs CLAUDE_CODE_ENABLE_FUNCTION_HOOKS=1. It is a mod for Claude Code, from rjwittams/katzensteg on GitHub.
What can the katzensteg mod access?
Its widest reach is "network" (network, runs processes, writes files, sets env vars, drives Claude, reads files, reads env vars, persists state, draws). It sees the system prompt, ? calls. It draws in AbovePrompt, Pane. Like any mod, it runs with your permissions.
How do I install katzensteg?
Clone rjwittams/katzensteg and start Claude Code with --plugin-dir pointing at the mod's folder (tools/claude-code-plugin).
Is katzensteg popular?
rjwittams/katzensteg has 3 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 24 October 2026.
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