What is harness-panel?
harness-panel is a Claude Code mod by selvr0 that turn skills, hooks and plugins on or off per directory from a side panel. It is listed under Interface and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | selvr0 |
| Repository | selvr0/harness-panel |
| Popularity | no public popularity data yet |
| Category | Interface |
| Security | Review before installing (64/100) |
| Rank | #4,564 of 5,272 Claude Code mods; #1,870 in Interface |
| License | MIT |
| Last commit | 2026-10-07 |
| Hooks | 9 events |
| Sees | Skill calls, classic hooks, every skill |
| Draws on | Pane |
Is harness-panel safe to install?
harness-panel scores 64/100 on the MCPMods security check: Review before installing. Things to review: starts processes outside the sandbox; writes files or config; reads environment variables. It passed 5 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 |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Passes claude plugin validate | Pass |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.command.register | |
$.env.get | reads env vars |
$.fs.exists | reads files |
$.fs.list | reads files |
$.fs.read | reads files |
$.fs.write | writes files |
$.process.run | runs processes |
$.session.id | |
$.session.root | |
$.session.usage | |
$.state.get | |
$.state.set | |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.ui.close | draws interface |
$.ui.invalidate | draws interface |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
$.ui.scroll | draws interface |
$.ui.toast | draws interface |
How do I install harness-panel?
- 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/selvr0/harness-panel claude plugin validate ./harness-panel/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add selvr0/harness-panel && claude plugin install harness-panel@harness-panel
Or ask Claude to set it up
Paste this into Claude Code and it installs harness-panel for you:
Install the "harness-panel" Claude Code mod from https://github.com/selvr0/harness-panel. Run claude plugin validate on it first and show me what it can access before you enable it.