Claude Code mod
exo
An exoskeleton for Claude Code: guards against costly mistakes, a cockpit while working, a recap at the end and a few extras
Install
/plugin marketplace add pepperonas/exo
/plugin install exo@pepperonas-exoMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: runs processes, writes files, drives Claude, writes the prompt box, writes the clipboard, reads files, reads env vars, reads settings, reads the transcript, reads the prompt box, reads mod state, plays audio, persists state, draws
- Sees
- every tool call, every prompt
- Draws in
PaneSpinnerPromptHintAbovePrompt- Hooks
session.starttool.callprompt.submitprompt.editturn.startturn.completesession.endcommand.runui.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
- pepperonas/exo
- Folder
.- Marketplace
pepperonas-exo- Author
- Martin Pfeffer
- License
- MIT
- Last updated
- 6 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is exo?
An exoskeleton for Claude Code: guards against costly mistakes, a cockpit while working, a recap at the end and a few extras It is a mod for Claude Code, from pepperonas/exo on GitHub.
What can the exo mod access?
Its widest reach is "writes or runs" (runs processes, writes files, drives Claude, writes the prompt box, writes the clipboard, reads files, reads env vars, reads settings, reads the transcript, reads the prompt box, reads mod state, plays audio, persists state, draws). It sees every tool call, every prompt. It draws in Pane, Spinner, PromptHint, AbovePrompt. Like any mod, it runs with your permissions.
How do I install exo?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add pepperonas/exo and then /plugin install exo@pepperonas-exo.
Is exo popular?
pepperonas/exo has 2 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 6 October 2026.
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