agentic-coding-starter-kit: Hook for Claude Code

.claude/settings.json

PreToolUse is a hook for Claude Code from johnlanda/agentic-coding-starter-kit. Its token cost is not measured, scanned C, original, no licence file.

A check that runs before the agent uses Bash, the command-line shell, or another Bash command tool. It runs two inline shell commands.

In plain words
What is it for?
Running pre-command checks for Bash tool calls.
Why use it?
It lets you inspect or validate commands before they are sent to the shell.

Hook for Claude Code

Written for Claude Code: installed under .claude/.

This is johnlanda/agentic-coding-starter-kit's own configuration. It tells Claude Code how to work on agentic-coding-starter-kit itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agentic-coding-starter-kit configures →

One of 3 entries in settings.json upstream. Installing this one merges just its entry into your config; the other 2 are separate, each on its own page.

Reuse

Borrowing it

Nothing to install: this file belongs to johnlanda/agentic-coding-starter-kit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/johnlanda/agentic-coding-starter-kit/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/johnlanda/agentic-coding-starter-kit

Made for: Claude Code.

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/johnlanda/agentic-coding-starter-kit/pre-tool-use/github.svg)](https://agentmods.dev/hooks/johnlanda/agentic-coding-starter-kit/pre-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/johnlanda/agentic-coding-starter-kit/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/johnlanda/agentic-coding-starter-kit/pre-tool-use/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for PreToolUse

Your own site · 80×15
<a href="https://agentmods.dev/hooks/johnlanda/agentic-coding-starter-kit/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/johnlanda/agentic-coding-starter-kit/pre-tool-use.svg" alt="Reviewed on agentmods" width="80" 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 C 1 finding. 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 C, and why

PreToolUse scanned grade C with 1 finding 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 2mo 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

"command": "jq -r '.tool_input.command' | grep -qE '(rm -rf /|git push.*--force.*main|DROP TABLE|DROP DATABASE)' && echo '{\"hookSpecificOutput\":{\"hookEventName\":\"PreToolUse\",\"permissionDecision\":\"deny\",\"permis
.claude/settings.json · 24 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

Same file

What else settings.json configures

This page is one entry in a file that holds 3. 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. 2mo ago First seen · 24 lines scan C 45b2eb039625

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository johnlanda/agentic-coding-starter-kit (3 stars, last pushed 6mo 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 C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.