What is rook?
rook is a Claude Code mod by 4DvAnCeBoY. rook by TestMu AI inside Claude Code: Claude runs rook against the agent it is building and gets failures back grouped into root-cause clusters with rook's remedies, writes scenarios, a. It is listed under Security and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | 4DvAnCeBoY |
| Repository | 4DvAnCeBoY/rook-claude-plugin |
| Popularity | no public popularity data yet |
| Category | Security |
| Security | Review before installing (60/100) |
| Rank | #2,458 of 5,272 Claude Code mods; #289 in Security |
| License | Apache-2.0 |
| Last commit | 2026-10-09 |
| Hooks | 5 events |
| Sees | /"^(Edit|Write|MultiEdit|NotebookEdit)$"/ calls, /"^mcp__rook__agent$"/ calls, /"^mcp__rook__ci$"/ calls, /"^mcp__rook__compare$"/ calls, /"^mcp__rook__curate$"/ calls, /"^mcp__rook__explore$"/ calls, /"^mcp__rook__generate$"/ calls, /"^mcp__rook__profile_test$"/ calls, /"^mcp__rook__project$"/ calls, /"^mcp__rook__report$"/ calls, /"^mcp__rook__run$"/ calls, /"^mcp__rook__runs$"/ calls, /"^mcp__rook__scenarios$"/ calls, /"^mcp__rook__status$"/ calls, /"^mcp__rook__sync$"/ calls, Bash calls |
| Draws on | ToolResult, ToolUse, Spinner, Pane, AbovePrompt |
Is rook safe to install?
rook scores 60/100 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 4 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 |
| 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 | |
$.clock.every | |
$.clock.now | |
$.command.register | |
$.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 |
$.process.run | runs processes |
$.process.spawn | |
$.prompt.fill | writes the prompt box |
$.prompt.submit | drives Claude |
$.session.append | |
$.state.get | |
$.state.set | |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.tool.register | drives Claude |
$.ui.focus | draws interface |
$.ui.invalidate | draws interface |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
$.ui.status | draws interface |
$.ui.toast | draws interface |
How do I install rook?
- 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/4DvAnCeBoY/rook-claude-plugin claude plugin validate ./rook-claude-plugin/plugins/rook
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add 4DvAnCeBoY/rook-claude-plugin && claude plugin install rook@rook-claude-plugin
Or ask Claude to set it up
Paste this into Claude Code and it installs rook for you:
Install the "rook" Claude Code mod from https://github.com/4DvAnCeBoY/rook-claude-plugin/tree/main/plugins/rook. Run claude plugin validate on it first and show me what it can access before you enable it.