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.
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Run score Not tested
See how to installReview the instructions the agent will receive before you install.
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.
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