agentmods.dev

PreToolUse

PreToolUse is a hook for Claude Code from shrwnsan/vibekit-claude-plugins. Its token cost is not measured, scanned A, original, no licence file.

A pre-use hook that runs a shell script before the agent makes a Bash tool call. The script is named filter-test-output.sh.

In plain words
What is it for?
Use it to run filter-test-output.sh before Bash calls made by the agent.
Why use it?
It provides a check or transformation point before Bash commands run. The description does not say what rules the script applies or how it changes output.

Hook for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the base plugin — 4 skills, 2 commands, 1 agent, 1 hook shipped together

not rated 7repo 18d ago A scan tokens not measured custom licence

Good fit Use it to run filter-test-output.sh before Bash calls made by the agent.

Compare 6 hooks from other repositories ↓
Install with agentmods
npx agentmods add hooks/shrwnsan/vibekit-claude-plugins/pre-tool-use
View source ↗ shrwnsan/vibekit-claude-plugins
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/shrwnsan/vibekit-claude-plugins

Made for: Claude Code.

Or install base, the plugin that ships this one along with the rest of its 4 skills, 2 commands, 1 agent, 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/shrwnsan/vibekit-claude-plugins/pre-tool-use.svg)](https://agentmods.dev/hooks/shrwnsan/vibekit-claude-plugins/pre-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/shrwnsan/vibekit-claude-plugins/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/shrwnsan/vibekit-claude-plugins/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 unknown 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.

plugins/base/hooks/hooks.json · 14 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 · 14 lines scan A d7a3106c92c1

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository shrwnsan/vibekit-claude-plugins (7 stars, last pushed 18d ago), with no licence file. 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.

Claude CodeProductivityTestingdeveloper-toolsmarketplaceplugins
Related

Other hooks, from other repositories

PostToolUse

Runs after a tool call finishes for Write and Edit tool calls, executing format_and_lint.sh. From supabase/supabase.

supabase/supabase · not measured

SessionStart

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

supabase/supabase · not measured

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