Claude Code mod

rook

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 live pane with per-scenario lanes and openable failures, re-test prompts after agent edits, a status line score, /rook commands and a production-target guard.

Pane & dashboard mods Plugin marketplaceValidates on Claude Code 2.1.316 Source

Install

Inside Claude Code
/plugin marketplace add 4DvAnCeBoY/rook-claude-plugin
/plugin install rook@rook-claude-plugin

Mods 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, changes config, drives Claude, writes the prompt box, reads files, reads env vars, reads mod state, persists state, draws
Sees
/"^mcp__rook__run$"/ calls, /"^mcp__rook__report$"/ calls, /"^mcp__rook__status$"/ calls, /"^mcp__rook__scenarios$"/ calls, /"^mcp__rook__runs$"/ calls, /"^mcp__rook__agent$"/ calls, /"^mcp__rook__curate$"/ calls, /"^mcp__rook__generate$"/ calls, /"^mcp__rook__project$"/ calls, /"^mcp__rook__explore$"/ calls, /"^mcp__rook__profile_test$"/ calls, /"^mcp__rook__compare$"/ calls, /"^mcp__rook__sync$"/ calls, /"^mcp__rook__ci$"/ calls, Bash calls, /"^(Edit|Write|MultiEdit|NotebookEdit)$"/ calls
Draws in
ToolResultToolUseSpinnerPaneAbovePrompt
Hooks
session.starttool.callcommand.runui.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.
Claude Code docs

Details

Repository
4DvAnCeBoY/rook-claude-plugin
Folder
plugins/rook
Marketplace
rook-claude-plugin
Author
TestMu AI (formerly LambdaTest)
Type
Pane & dashboard mods
Website
github.com/LambdaTest/rook-claude-plugin
License
Apache-2.0
Last updated
9 October 2026
Listed in
awesome-claude-code-mods

FAQ

What is rook?

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 live pane with per-scenario lanes and openable failures, re-test prompts after agent edits, a status line score, /rook commands and a production-target guard. It is a mod for Claude Code, from 4DvAnCeBoY/rook-claude-plugin on GitHub.

What can the rook mod access?

Its widest reach is "writes or runs" (runs processes, writes files, changes config, drives Claude, writes the prompt box, reads files, reads env vars, reads mod state, persists state, draws). It sees /"^mcp__rook__run$"/ calls, /"^mcp__rook__report$"/ calls, /"^mcp__rook__status$"/ calls, /"^mcp__rook__scenarios$"/ calls, /"^mcp__rook__runs$"/ calls, /"^mcp__rook__agent$"/ calls, /"^mcp__rook__curate$"/ calls, /"^mcp__rook__generate$"/ calls, /"^mcp__rook__project$"/ calls, /"^mcp__rook__explore$"/ calls, /"^mcp__rook__profile_test$"/ calls, /"^mcp__rook__compare$"/ calls, /"^mcp__rook__sync$"/ calls, /"^mcp__rook__ci$"/ calls, Bash calls, /"^(Edit|Write|MultiEdit|NotebookEdit)$"/ calls. It draws in ToolResult, ToolUse, Spinner, Pane, AbovePrompt. Like any mod, it runs with your permissions.

How do I install rook?

Inside Claude Code (v2.1.287 or later), run /plugin marketplace add 4DvAnCeBoY/rook-claude-plugin and then /plugin install rook@rook-claude-plugin.

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