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PreToolUse

PreToolUse is a hook for Claude Code from davejj1530/planflow-greenlight. Its token cost is not measured, scanned A, a copy of Stop, MIT.

A pre-tool hook that runs a Node.js script before the agent exits its planning mode. A hook is an automatic action triggered at a specific point in an agent workflow.

In plain words
What is it for?
Use it when configuring the referenced Planflow Greenlight plugin and you need a command to run before `ExitPlanMode` calls.
Why use it?
It redirects that particular plan-exit action through a custom script, so the workflow can apply its own handling before the tool call completes.

Hook for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: names the ExitPlanMode tool.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the planflow plugin — 1 skill, 1 command, 1 hook shipped together

not rated 1repo 1mo ago A scan tokens not measured copy · 86% MIT

Good fit Use it when configuring the referenced Planflow Greenlight plugin and you need…

Compare 6 hooks from other repositories ↓
View source ↗ davejj1530/planflow-greenlight
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add davejj1530/planflow-greenlight
Claude Code
/plugin install planflow

Made for: Claude Code.

Or install planflow, the plugin that ships this one along with the rest of its 1 skill, 1 command, 1 hook.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for PreToolUse

README.md
[![agentmods](https://agentmods.dev/badge/hooks/davejj1530/planflow-greenlight/pre-tool-use.svg)](https://agentmods.dev/hooks/davejj1530/planflow-greenlight/pre-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/davejj1530/planflow-greenlight/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/davejj1530/planflow-greenlight/pre-tool-use.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 86% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

PreToolUse scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the commands this hook runs, not an audit. A hook is shell that executes on your machine at the event it names, which is why every command in it is printed with what was found.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

86% identical to Stop — 5 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

hooks/hooks.json · 13 lines

What it actually says

{
  "PreToolUse": [
    {
      "matcher": "ExitPlanMode",
      "hooks": [
        {
          "type": "command",
          "command": "node \"${CLAUDE_PLUGIN_ROOT}/hooks/redirect-plan.mjs\""
        }
      ]
    }
  ]
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 13 lines scan A 781fd53e89d8

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository davejj1530/planflow-greenlight (1 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: a hook is shell that never enters the context. A static security scan graded it A with 0 findings. It is 86% identical to Stop, differing in 5 lines, and is treated as a copy.

Claude Codeagenticagentic-aiagentic-workflowclaude-code-pluginclaude-plugin
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