// 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.
| name | matt-git-guardrails |
| description | 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. |
| agent | matt |
| user-invocable | false |
| metadata | {"pattern":"tool-wrapper"} |
Sets up a PreToolUse hook that intercepts and blocks dangerous git commands before Claude executes them.
git push (all variants including --force)git reset --hardgit clean -f / git clean -fdgit branch -Dgit checkout . / git restore .When blocked, Claude sees a message telling it that it does not have authority to access these commands.
Ask the user: install for this project only (.claude/settings.json) or all projects (~/.claude/settings.json)?
The bundled script is at: scripts/block-dangerous-git.sh
Copy it to the target location based on scope:
.claude/hooks/block-dangerous-git.sh~/.claude/hooks/block-dangerous-git.shMake it executable with chmod +x.
Add to the appropriate settings file:
Project (.claude/settings.json):
{
"hooks": {
"PreToolUse": [
{
"matcher": "Bash",
"hooks": [
{
"type": "command",
"command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/block-dangerous-git.sh"
}
]
}
]
}
}
Global (~/.claude/settings.json):
{
"hooks": {
"PreToolUse": [
{
"matcher": "Bash",
"hooks": [
{
"type": "command",
"command": "~/.claude/hooks/block-dangerous-git.sh"
}
]
}
]
}
}
If the settings file already exists, merge the hook into existing hooks.PreToolUse array — don't overwrite other settings.
Ask if user wants to add or remove any patterns from the blocked list. Edit the copied script accordingly.
Run a quick test:
echo '{"tool_input":{"command":"git push origin main"}}' | <path-to-script>
Should exit with code 2 and print a BLOCKED message to stderr.
Generate multiple radically different interface designs for a module using parallel sub-agents. Use when user wants to design an API, explore interface options, compare module shapes, or mentions "design it twice".
Edit and improve articles by restructuring sections, improving clarity, and tightening prose. Use when user wants to edit, revise, or improve an article draft.
Interview the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree. Use when user wants to stress-test a plan, get grilled on their design, or mentions "grill me".
Explore a codebase to find opportunities for architectural improvement, focusing on making the codebase more testable by deepening shallow modules. Use when user wants to improve architecture, find refactoring opportunities, consolidate tightly-coupled modules, or make a codebase more AI-navigable.
Migrate test files from `as` type assertions to @total-typescript/shoehorn. Use when user mentions shoehorn, wants to replace `as` in tests, or needs partial test data.
Search, create, and manage notes in the Obsidian vault with wikilinks and index notes. Use when user wants to find, create, or organize notes in Obsidian.