Hook Block Commands

Q: What is a Claude Code skill and how does the Hook Block Commands skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Hook Block Commands is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: ai-tooling · Last updated: 2026-06-04

Pattern guide for writing PreToolUse hooks that block dangerous shell commands. Use when: building or auditing a guard-destructive hook, adding new blocked patterns, reviewing what the current hook covers. Covers 3 safety levels (critical/high/strict) and 58+ regex patterns. Inspired by: karanb192/claude-code-hooks block-dangerous-commands pattern (MIT).

What this skill does

Hook Block Commands is a community-contributed Claude Code skill in the ai-tooling sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/hook-block-commands/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when: building or auditing a guard-destructive hook, adding new blocked patterns, reviewing what the current hook covers. Covers 3 safety levels (critical/high/strict) and 58+ regex patterns.

Who uses this skill

The Hook Block Commands Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 88,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/hook-block-commands
curl -L https://claudskills.com/skills/hook-block-commands/SKILL.md \
  -o ~/.claude/skills/hook-block-commands/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/hook-block-commands/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/hook-block-commands/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\hook-block-commands\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Hook Block Commands Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/hook-block-commands/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Hook Block Commands skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Hook Block Commands skill?

Use Hook Block Commands when your Claude Code task falls under the General category — specifically in the ai tooling area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Hook Block Commands" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Hook Block Commands skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Hook Block Commands is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/phamlongh230-lgtm/yamtam-engine/blob/HEAD/.claude/skills/hook-block-commands/SKILL.md
Author: phamlongh230-lgtm

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

phamlongh230-lgtm. (2026). Hook Block Commands [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/hook-block-commands/

BibTeX

@misc{hook-block-commands-2026,
  author    = {phamlongh230-lgtm},
  title     = {Hook Block Commands [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/hook-block-commands/}
}

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