Claude Code 자율 운영을
안전하게 만드는 106편의 한국어 가이드.

The most common Claude Code hook mistakes: syntax errors that block all tools, wrong matchers, missing jq, and more. Each with a fix.

Try cc-guard without installing. See how hooks block rm -rf, force-push, and credential leaks in real-time.

772 example hooks, 56 commands, 28 browser tools, 30K+ total installs. Make Claude Code safe for autonomous operation. Prevents rm -rf, database destruction, force-push, secret leaks, and more.

Every hook was born from a real incident. See the before/after for each one.

30+ copy-paste hook patterns for Claude Code. Block dangerous commands, auto-approve safe ones, monitor costs. One page, zero fluff.

Answers to every common question about Claude Code hooks. Why hooks? How do they work? What about performance?

Audit your Claude Code settings and generate safety hooks — 100% in your browser. No npm required.

Install Claude Code safety hooks in 30 seconds. Prevents rm -rf disasters, production database destruction, force-push to main, secret leaks. Step-by-step for beginners. npx @gaebalai/cc-guard.

Opus 4.7 has critical bugs: 4x token consumption, data loss (50GB+), classifier failures. Here are the hooks and fixes that protect your work right now.

Opus 4.6 was removed from the Desktop model picker. Here

Calculate how much extra Opus 4.7 costs compared to 4.6. Input your usage pattern, get estimated monthly cost and savings potential.

Calculate how much extra Opus 4.7 bugs are costing you. Input your plan and usage to see the hidden token inflation, cache bugs, and system overhead — and how much you could save.

Opus 4.7 caused 20+ data loss incidents in 3 days. Auto mode classifier failure, 4x token burn, prompt cache destruction. Here are the hooks that stop it.

Paste your settings.json to check if you

Claude Code can accidentally run npm publish and push unfinished code to the public registry. Block it with a PreToolUse hook. Works in Auto Mode.

Claude Code used --no-verify on 6 consecutive commits, bypassing pre-commit hooks silently. Block it with a PreToolUse hook. One command: npx @gaebalai/cc-guard.

Claude Code running bash -x traces all commands including expanded secrets from .env files. One hook to prevent it.

Claude Code can burn through your entire quota in minutes due to runaway loops. Real incidents from GitHub Issues. Prevent it with tool-call-rate-limiter and consecutive-error-breaker hooks.

Claude Code can force-push to main and rewrite shared branch history. Real incidents from autonomous sessions. One command to prevent it: npx @gaebalai/cc-guard.

Claude Code can git add .env and commit your API keys. A PreToolUse hook blocks .env from being staged, even with git add . or git add -A. Instant protection.

Claude Code can run DROP DATABASE, prisma migrate reset, rails db:drop. A PreToolUse hook blocks destructive database commands. Protect your production data.

Claude Code can run npm install, pip install, and add unwanted dependencies. Block unauthorized package installations with a PreToolUse hook.

Stop Claude Code from reading .netrc, .npmrc, .aws/credentials, and other credential files. Three hooks that prevent credential exposure in AI agent sessions.

Claude Code can commit .env files, API keys, and credentials to public repos via git add. A PreToolUse hook catches it before the commit. npx @gaebalai/cc-guard.

After /compact, Claude autonomously pushes commits. A hook guards the vulnerable post-compaction period.

Claude Code can run git reset --hard and wipe all uncommitted work. Real incidents from GitHub Issues. One command to prevent it: npx @gaebalai/cc-guard.

Claude Code can run rm -rf and delete your entire filesystem. Real incidents from GitHub Issues. One command to prevent it: npx @gaebalai/cc-guard.

Claude Code degrades after 6+ hours — ignoring rules, creating duplicates. A hook that progressively tightens safety.

Claude Code rm -rf with shell variables like ${LOCALAPPDATA} can delete system directories. One hook to prevent it.

Claude Code can introduce syntax errors that cascade through dozens of files. A PostToolUse hook catches them immediately. npx @gaebalai/cc-guard.

Claude Code creates hundreds of temp files in /tmp that are never cleaned up. Prevent disk exhaustion with a Stop hook that auto-deletes session artifacts.

Claude Code reads too many files, consuming 25% of token quota before working. A read budget hook.

Claude auto-appends Co-Authored-By trailers to every commit. A hook to control or strip them.

Claude Code ignores

The 10 foundational patterns for writing Claude Code hooks. Block, approve, warn, log, validate, protect, limit, checkpoint, enforce, recover.

5 hooks that automatically reduce Claude Code token consumption. Copy-paste into settings.json. Blocks file spam, limits reads, caps subagents.

Stop clicking

Claude Code can run curl/wget to any domain. Block unauthorized HTTP requests with a PreToolUse hook that enforces a domain allowlist on Bash commands.

Auto Mode in Claude Code runs commands without asking. Here

Running Claude Code unattended? 772 hooks to prevent rm -rf, force-push, secret leaks, and session drift.

Claude Code v2.1.85 adds the

PreToolUse hooks don

Hooks to detect Claude Code quality degradation: lazy file rewrites, skipped code reads, untested commits. Based on AMD

Claude Code에서 여러 AI 에이전트를 안전하게 동시에 가동하는 방법. 800시간의 자율 운용 경험에서 얻은 tmux 제어·파일 감시·3계층 아키텍처의 실전 패턴.

Claude Code

Claude Code Auto Mode skips confirmation prompts. Without hooks, rm -rf, force-push, and secret leaks happen silently. Install safety hooks before enabling Auto Mode.

WebFetch(domain:*) doesn

9,228+ tests for 772 hooks. How to validate your hooks work correctly before trusting them in production.

Defend against all 10 OWASP MCP risks with Claude Code hooks. Token leaks, privilege escalation, tool poisoning, supply chain attacks — each with a working hook.

Everything you need before leaving Claude Code running unattended. Git setup, hooks, monitoring, recovery plan.

Diagnose and fix excessive token consumption in Claude Code. Hooks to track prompts, detect auto-compact cycles, and reduce Max Plan usage.

Reduce Claude Code token consumption by 50% with measured techniques. CLAUDE.md optimization, hook-based guards, context management. Based on 800 hours of real operation data. Updated for Opus 4.7.

Claude Code의 토큰 소비를 절반으로 줄이는 방법. Opus 4.7에서 최대 35% 증가한 토큰 비용에 대한 대책. CLAUDE.md 최적화, hook 활용, 모델 선택의 실측 데이터.

Paste your /cost output and settings.json to get a detailed token optimization report with specific hook recommendations.

Quick 5-question diagnostic to find where your Claude Code tokens are going. Get personalized optimization tips based on 800+ hours of operation data.

Paste your /cost output to diagnose cache_creation inflation, TTL breakage, and token waste. Free tool from cc-guard.

Paste your settings.json and watch 10 real attack scenarios play out. See which ones your hooks catch — and which ones slip through.

14-point safety checklist before running Claude Code autonomously. Print it. Share it. Never skip it.

Calculate your Claude Code monthly cost. Compare Opus 4.6 vs 4.7 token consumption (+35%). See where tokens go and get optimization tips from 800+ hours of data.

Calculate how much you

Public tracker for Claude Code structural failure clusters: sub-agent observability, multi-account, AGENTS.md interop, Pro Max quota anomaly, TUI UX, permission matching, Skills metadata, v2.1.150 server-side prompt injection, AUP false-positive on Opus. Issue counts, reactions, defense hooks shipped, upstream status.

5-question risk assessment based on 90 real Claude Code incidents. Find out your risk level and get personalized safety recommendations.

Answer 3 questions, get the exact commands to make Claude Code safe for your project.

Paste your settings.json and get instant feedback: errors, missing hooks, security issues, and improvement suggestions.

Paste your Claude Code settings.json to detect common hook mistakes. Free validator from cc-guard (700+ hooks).

Search 109 pages of Claude Code incident write-ups, fix recipes, and prevention hooks by symptom keyword. Free, no signup.

Check if your Claude Code version is affected by cache_creation inflation (#46917), TTL regression (#46829), or other known issues. Instant diagnosis with fix recommendations.

Paste your CLAUDE.md and see how many tokens it costs per turn. Find waste patterns and get optimization tips from 800+ hours of Claude Code operation.

Generate Claude Code hooks from plain English. No coding required.

Paste your Claude Code settings.json and find out which safety hooks you

Paste your settings.json and check if all hook scripts exist and are executable. Diagnose Permission denied errors.

Write Claude Code hooks in your browser. Test with sample inputs. See output instantly. No install needed.

Answer 5 questions, get a personalized Claude Code safety hook configuration. Based on 800+ hours of autonomous operation experience.

6-question diagnostic to find security vulnerabilities in your Claude Code setup. Based on real incidents: $1,446 unauthorized transfers, file deletions, PII leaks.

Answer 3 questions to find the exact Claude Code hook you need. Interactive decision tree.

80+ real Claude Code safety incidents tracked from GitHub Issues. File deletion, credential leaks, token drain, production outages. See why hooks matter.

Protect your Claude Code sessions from outages. 3 battle-tested hooks from 800+ hours of autonomous operation that prevent data loss during disconnections.

Hook not firing? Claude ignoring rules? Permission prompt spam? Fix every common Claude Code problem.

On v2.1.133, Pro / Claude.ai-OAuth login can fill /context with 2.9 million tokens of System tools before you type anything. One environment variable disables the connector sync without losing OAuth.

Claude Code quality degrades after 6+ hours: more errors, ignored instructions, destructive actions. Monitor error rates with a PostToolUse hook and know when to restart.

Stop Claude Code from auto-compacting your context. Use a PreCompact hook to block compaction entirely or conditionally. Preserve your full conversation history.

Claude Code downloads the full release tarball (226 MB, ~30 s) on every `claude update` — even when already up-to-date. Open Issue, no upstream fix. Drop-in bash wrapper that checks the npm registry first.

Claude Code agents source .bashrc on every spawn, causing hangs from completion scripts (Angular, nvm, conda). Fix with a SessionStart hook that detects dangerous patterns.

Background agents in Claude Code can

Claude Code runs git show with invalid --no-stat flag, causing exit code 128 errors. Fix it automatically with a PreToolUse hook that strips the bad flag.

Reduce Claude Code permission prompts by 60%. Auto-approve safe git commands, skip redundant file reads, and batch approve test runs. Copy-paste ready hooks.

Five copy-paste hooks that prevent rm -rf disasters, force-push to main, secret leaks, compaction death spirals, and token waste. Each one addresses a real GitHub Issue.

Cross-tool safety report covering real incidents from Claude Code, Cursor, GitHub Copilot, and Windsurf. Data loss, credential leaks, production failures, and token drain — documented with sources.

Anthropic

Auto-compact can loop infinitely and drain your entire token budget overnight. Here

Extended thinking can enter a runaway state and drain your entire Claude Code token quota in minutes. Here

42% of developers cite token cost volatility as their #1 pain point with AI coding tools. Here

Subagent permissions don

Claude Code has deleted 50 GB of user data, wiped SSH keys, and destroyed production databases. Here

PreToolUse, PostToolUse, Stop, SubagentStop, UserPromptSubmit — when each fires, what data it receives, what it can do.

Exit code 0 = allow. Exit code 2 = block. Exit code 1 = error (ignored). Bash syntax errors = exit 2 = accidental block. The full guide.

30 hook recipes for Claude Code. Each solves a specific problem with copy-paste code. From permission prompt fatigue to silent file edits.

Moving from Cursor, Windsurf, Aider, or Copilot to Claude Code? Here

Compare all Claude Code hook projects — features, language, stars, and installation methods.

Interactive matrix of Claude Code hooks. Filter by trigger, category, and action type. 772 hooks available.

Compare three approaches to Claude Code safety: manual hooks, cc-guard, or no protection. Time, coverage, and maintenance compared.

Every settings.json field explained with examples. Hooks, permissions, env vars — the definitive reference.

How to write an effective CLAUDE.md for Claude Code. 5 templates for different use cases, common mistakes to avoid, and how hooks enforce your rules.

Optimize your CLAUDE.md to reduce Claude Code token consumption by 40%. Before/after examples, templates, and the 3-rule framework from 800+ hours of operation.

Complete matcher reference for Claude Code hooks. Bash, Edit, Write, Read, Agent — how to target specific tools.