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PreToolUse

PreToolUse is a hook for Claude Code from Utopia5327/claude-plugin-for-revit-bim. Its token cost is not measured, scanned A, original, MIT.

A pre-tool hook that runs a small shell command before the agent uses Bash, the command-line shell. In this case, it prints a message indicating that a command is about to run.

In plain words
What is it for?
Use it in a plugin configuration to add a pre-command message for Bash calls, particularly when working with Revit-related automation.
Why use it?
Agents and users may want visible confirmation that a shell command is being started. The hook provides that notification before each matching tool call.

Hook for Claude Code

Written for Claude Code: PreToolUse hook event.

Part of the revit-bim plugin — 25 skills, 3 agents, 2 hooks shipped together

One of 2 entries in hooks.json upstream. Installing this one merges just its entry into your config; the other 1 are separate, each on its own page.

not rated 6repo 6mo ago A scan tokens not measured original MIT

Good fit Use it in a plugin configuration to add a pre-command message for Bash calls, particularly when working with Revit-related automation.

Compare 6 hooks from other repositories ↓
Install with agentmods
npx agentmods add hooks/utopia5327/claude-plugin-for-revit-bim/pre-tool-use
View source ↗ Utopia5327/claude-plugin-for-revit-bim
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/Utopia5327/claude-plugin-for-revit-bim

Made for: Claude Code.

Or install revit-bim, the plugin that ships this one along with the rest of its 25 skills, 3 agents, 2 hooks.

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/utopia5327/claude-plugin-for-revit-bim/pre-tool-use.svg)](https://agentmods.dev/hooks/utopia5327/claude-plugin-for-revit-bim/pre-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/utopia5327/claude-plugin-for-revit-bim/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/utopia5327/claude-plugin-for-revit-bim/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 original No closer match found 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 8d 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.

hooks/hooks.json · 13 lines

What it actually says

{
  "PreToolUse": [
    {
      "matcher": "Bash",
      "hooks": [
        {
          "type": "command",
          "command": "echo '[revit-bim] Running command...'"
        }
      ]
    }
  ]
}
Same file

What else hooks.json configures

This page is one entry in a file that holds 2. Installing the file brings all of them; each is measured and scanned on its own page.

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. 8d ago First seen · 13 lines scan A 9dd12b4c228c

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository Utopia5327/claude-plugin-for-revit-bim (6 stars, last pushed 6mo 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. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other hooks, from other repositories

PostToolUse

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SessionStart

Runs when a session starts on startup, executing install_pkgs.sh. From supabase/supabase.

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SessionStart

Runs when a session starts, executing on-start.js via node. From google-gemini/gemini-cli.

google-gemini/gemini-cli · not measured

PreToolUse

Runs before the agent uses a tool for Bash tool calls, running an inline shell check. From apache/superset.

apache/superset · not measured

PreToolUse

Runs before the agent uses a tool, executing pre-write.sh and pre-bash.sh (2 commands). From anthropics/claude-cookbooks.

anthropics/claude-cookbooks · not measured

PreCompact

Runs before the context is compacted for manual and auto tool calls, executing hook-handler.cjs via node (4 commands). From ruvnet/RuView.

ruvnet/RuView · not measured