What is katharsis?
katharsis is a Claude Code mod by OpenScribbler that an output style that classifies each message by exchange type and shapes the reply to fit it: the answer first, a ceiling per type, reference codes that survive the session, and decisions. It is listed under Interface and has 5 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | OpenScribbler |
| Repository | OpenScribbler/Katharsis |
| Popularity | 5 GitHub stars |
| Category | Interface |
| Security | High risk (48/100) |
| Rank | #712 of 5,272 Claude Code mods; #263 in Interface |
| License | MIT |
| Last commit | 2026-10-18 |
| Stars this week | +1 |
| Hooks | 9 events |
| Sees | classic hooks, every prompt |
| Draws on | AbovePrompt, Pane, AssistantMessage |
Is katharsis safe to install?
katharsis scores 48/100 on the MCPMods security check: High risk. Things to review: starts processes outside the sandbox; writes files or config; reads environment variables; watches every prompt or event. It passed 3 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts processes outside the sandbox | Review |
| Writes files or config | Review |
| Reads environment variables | Review |
| Watches every prompt or event | Review |
| Drives Claude (model calls, prompts) | Note |
| Passes claude plugin validate | Pass |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.clock.after | |
$.command.register | |
$.config.list | |
$.config.set | changes config |
$.env.get | reads env vars |
$.fs.exists | reads files |
$.fs.list | reads files |
$.fs.read | reads files |
$.fs.write | writes files |
$.model.fork | drives Claude |
$.process.run | runs processes |
$.prompt.submit | drives Claude |
$.session.cwd | |
$.session.id | |
$.session.model | |
$.session.turns | |
$.settings.read | reads settings |
$.state.get | |
$.state.set | |
$.ui.invalidate | draws interface |
$.ui.open | draws interface |
$.ui.panes | draws interface |
$.ui.resolve | draws interface |
$.ui.toast | draws interface |
How do I install katharsis?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/OpenScribbler/Katharsis claude plugin validate ./Katharsis/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add OpenScribbler/Katharsis && claude plugin install katharsis@openscribbler
Or ask Claude to set it up
Paste this into Claude Code and it installs katharsis for you:
Install the "katharsis" Claude Code mod from https://github.com/OpenScribbler/Katharsis. Run claude plugin validate on it first and show me what it can access before you enable it.