git-guardrails-claude-code SKILL.md skillA

This file is byte-identical to the first copy the registry indexed, one of 5 indexed copies. Same content hash, so the same checks give both the same grade.

git-guardrails-claude-code from asymmetric-al/core is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add asymmetric-al/core/git-guardrails-claude-code@git:20260923.15c9348

Pins git:20260923.15c9348 in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

asymmetric-al/core

Path

.agents/skills/git-guardrails-claude-code/SKILL.md

Versions recorded

2

Latest version

git:20260923.15c9348, committed Sep 23, 2026

First version recorded

Jul 9, 2026

Size

2,313 bytes

Repository stars

370

License

AGPL-3.0

Set up Claude Code hooks to block dangerous git commands (push, reset --hard, clean, branch -D, etc.) before they execute. Use when user wants to prevent destructive git operations, add git safety hooks, or block git push/reset in Claude Code.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Setup Git Guardrails

Sets up a PreToolUse hook that intercepts and blocks dangerous git commands before Claude executes them.

## What Gets Blocked

- `git push` (all variants including `--force`)
- `git reset --hard`
- `git clean -f` / `git clean -fd`
- `git branch -D`
- `git checkout .` / `git restore .`

When blocked, Claude sees a message telling it that it does not have authority to access these commands.

## Steps

### 1. Ask scope

Ask the user: install for **this project only** (`.claude/settings.json`) or **all projects** (`~/.claude/settings.json`)?

### 2. Copy the hook script

The bundled script is at: [scripts/block-dangerous-git.sh](scripts/block-dangerous-git.sh)

Copy it to the target location based on scope:

- **Project**: `.claude/hooks/block-dangerous-git.sh`
- **Global**: `~/.claude/hooks/block-dangerous-git.sh`

Make it executable with `chmod +x`.

### 3. Add hook to settings

Add to the appropriate settings file:

**Project** (`.claude/settings.json`):

```json
{
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Bash",
        "hooks": [
          {
            "type": "command",
…

Read the whole file at its exact version.

How to install

mdr add asymmetric-al/core/git-guardrails-claude-code@sha256:69b291d655626a01

[![mdr](https://markdownregistry.com/badge/art_3upxgael4phpg5m5.svg)](https://markdownregistry.com/a/art_3upxgael4phpg5m5)

Versions

The registry has recorded 2 versions of this file, between Jul 9, 2026 and Sep 23, 2026, about one every 76 days.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_3upxgael4phpg5m5
GET https://markdownregistry.com/api/v1/resolve?ref=asymmetric-al/core/git-guardrails-claude-code
GET https://markdownregistry.com/api/v1/blob/69b291d655626a01602b998a1836fcb93c058ede68dfafddfd71e87f17074764

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from asymmetric-al/core

Every file in asymmetric-al/core

Other files named git-guardrails-claude-code

Browse by kind, by grade A, or by owner.