agentmods.dev

PreToolUse

PreToolUse is a hook for coding agents from Flagrare/agent-skills. Its token cost is not measured, scanned A, original, no licence file.

A pre-tool hook that runs a shell script before the agent uses a skill tool.

In plain words
What is it for?
Use it to run pre_atdd_plan_gate.sh before skill-related tool use.
Why use it?
It adds an automatic check before those tool calls, so the check does not depend on remembering to run it manually.

Hook

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 flagrare plugin — 33 skills, 1 hook shipped together

not rated 11 yesterday A scan tokens not measured no licence
View the source file Flagrare/agent-skills
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 Flagrare/agent-skills
Claude Code
/plugin install flagrare

Or install flagrare, the plugin that ships this one along with the rest of its 33 skills, 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/flagrare/agent-skills/pre-tool-use.svg)](https://agentmods.dev/hooks/flagrare/agent-skills/pre-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/flagrare/agent-skills/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/flagrare/agent-skills/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. Scan, not verified.
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 5d 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/flagrare/hooks/hooks.json · 13 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 5d ago First seen · 13 lines scan A b7fb3b21e633

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository Flagrare/agent-skills (11 stars, last pushed yesterday), 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 2026-08-30.

agentic-workflowsai-agentsanthropicatddchangelogclaude-code
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SessionStart

Runs when a session starts, executing hooks.mjs via node. From illodev/workfile.

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UserPromptSubmit

Runs when you submit a prompt, before the agent sees it, executing wp-gate-reminder.sh, close-gate-reminder.sh, inject-role-prefixes.sh, lazy-context-loader.sh, inject-communication-style.sh and inject-fault-profile.sh (6 commands). From TserenTserenov/FMT-exocortex-template.

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Stop

Runs when the agent finishes a response, running an inline shell check. From aigengame/cli-agentic-workflow.

aigengame/cli-agentic-workflow · not measured