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Stop Claude Code from deleting your files

Claude Code is Anthropic's AI coding agent that runs commands in your terminal. Without guardrails, it can delete files, leak secrets, or force-push to production.

One command installs safety hooks that block destructive commands before they execute. 727 hooks, 9,200+ tests, 30K+ total installs.

npx cc-safe-setup

8 core safety hooks installed in under 30 seconds. No config needed.

View on GitHub Try Live Demo Opus 4.7 Survival Guide (66 sections)

Real incidents from GitHub Issues: 50GB data loss, $1,446 unauthorized transfer, production server destroyed

🔥 New: Attack Simulator (10 scenarios) · Risk Assessment · Incident Tracker (90 incidents)

Weekly installs

Install

Run npx cc-safe-setup. 8 hooks installed in 30 seconds.

Protect

Hooks intercept rm -rf, force-push, credential leaks before they execute.

Monitor

Track token consumption, detect quota drain, get alerts before it's too late.

⚡ Safety AND Convenience — our most popular hook auto-approves safe git commands, reducing clicks while blocking dangerous ones.

ONE-TIME · CUT YOUR TOKENS IN HALF

Token Book — $17

800+ hours of data. 48 token drain symptoms. Copy-paste templates.

MONTHLY · STAY AHEAD OF INCIDENTS

CC Safety Lab — ¥500/mo

Monthly digest: 4-8 incidents, hooks, token-saving techniques. Founder price locked.

Tokens disappearing? Take the free Token Checkup — 5 questions, 30 seconds. Find out what's draining your quota. | Token Book — $17 800h of data, copy-paste templates | Safety Lab — ¥500/mo monthly incident digest

Safety Audit

Paste your ~/.claude/settings.json. Nothing leaves your browser.

Hook Builder

Build a custom hook without writing code.

Action

Pattern (regex)

Message

Hooks Cookbook

Copy-paste recipes from real GitHub Issues.

Ecosystem Comparison

All major Claude Code hook projects compared.

Project	Lang	Hooks	Install
safety-net	TS	5	npx
cc-safe-setup	Bash	707+	npx
karanb192	JS	5+	copy
mastery	Python	12	copy
lasso	Python	1	install.sh

Feature Matrix

Feature	safety-net	cc-safe-setup	karanb192	mastery
rm -rf blocker	✓	✓	✓	✓
Branch guard	✓	✓	-	-
Secret guard	-	✓	✓	-
Syntax check	-	✓	-	-
Context monitor	-	✓	-	-
Hook generator	-	✓	-	-
Dashboard	-	✓	-	-
GitHub Action	-	✓	-	-

Hooks Cheat Sheet

Print this page (Ctrl+P) for a quick reference.

Lifecycle

Prompt → PreToolUse → Tool → PostToolUse → Stop

Exit Codes

Code	Meaning
`0`	Allow
`2`	Block

Minimal Block Hook

#!/bin/bash
CMD=$(cat | jq -r '.tool_input.command // empty')
[ -z "$CMD" ] && exit 0
echo "$CMD" | grep -qE 'PATTERN' && echo "BLOCKED" >&2 && exit 2
exit 0

Auto-Approve Hook

#!/bin/bash
CMD=$(cat | jq -r '.tool_input.command // empty')
[ -z "$CMD" ] && exit 0
echo "$CMD" | grep -qE '^git\s+(status|log|diff)' && \
  jq -n '{"hookSpecificOutput":{"hookEventName":"PreToolUse","permissionDecision":"allow"}}'
exit 0

Quick Commands

`npx cc-safe-setup`	Install 8 hooks
`--create "desc"`	Generate hook
`--audit`	Score 0-100
`--dashboard`	Live status
`--doctor`	Diagnose
`--benchmark`	Speed test

How healthy is your Claude Code setup?

Run a free 20-check diagnostic. Takes 2 seconds, nothing leaves your machine.

npx cc-health-check

30K+ total installs · 727 example hooks · Production Guide (Zenn Book)

Prevent real incidents:

rm -rf disasters Force-push to main Secret leaks git reset --hard Cascading syntax errors Dependency bloat Temp file buildup Auto Mode safety Hook if field (v2.1.85) Shell variable trap Session drift Token waste Cost explosion bash -x debug leak Post-compact push Hook testing guide Autonomous safety CLAUDE.md best practices Co-Authored-By control Fix git show --no-stat Disable auto-compaction WebFetch domain fix Pipe mode safety Session degradation Denied action retry Background agent writes