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View guide →A guard that blocks dangerous git and shell commands before AI agents can execute them.
destructive_command_guard is an open-source dev tools project by Dicklesworthstone (Dicklesworthstone/destructive_command_guard on GitHub). It has 6,120 GitHub stars and 253 forks, is released under the MIT license, and was last updated on GitHub on 8 October 2026.
If an agent with shell access could wipe uncommitted work or damage your system, dcg is the seatbelt that sits in its command path.
Run the installer for your platform, using easy mode if you want sensible defaults.
Review the enabled packs, choose warn/log/ask/block behavior per rule, and add allowlist entries for your legitimate workflows.
Have your agent (or yourself) attempt a blocked command such as git reset --hard and confirm dcg intercepts it.
Intercepts dangerous git and shell commands before execution, explaining the reason and suggesting a safer alternative like git stash.
Organized packs cover git, filesystem, database, cloud and platform CLIs (including Azure DevOps), plus Windows-specific packs enabled by default on Windows.
Rules can block, warn, log silently or ask the operator for review where the hook protocol supports it, with severity ladders and presets such as strict_git.
Automatically detects which AI coding agent invoked it and applies per-agent disabled/extra packs and allowlists; Codex CLI is a first-class hook target alongside Claude Code.
An opt-in pack blocks value-emitting secret reads from tools like Infisical, 1Password, Doppler, Vault and AWS Secrets Manager.
dcg explain --format json shows exactly which rule and mode would apply to a command before you rely on it.
Clone the guard if you want the source; most users install the released binary in the next step.
git clone https://github.com/Dicklesworthstone/destructive_command_guard.git
cd destructive_command_guardRun the official installer in easy mode (a PowerShell installer is provided for Windows).
curl -fsSL "https://raw.githubusercontent.com/Dicklesworthstone/destructive_command_guard/main/install.sh?$(date +%s)" | bash -s -- --easy-modeTry a destructive command through your agent hook and confirm dcg blocks it with an explanation.
git reset --hard HEAD~5
# dcg intercepts and blocks: git reset --hard destroys uncommitted changesThe Destructive Command Guard is maintained by Dicklesworthstone (Jeffrey Emanuel).
Yes — its LICENSE is the MIT License with an additional OpenAI/Anthropic rider; read the LICENSE file for the exact terms.
No. dcg is a local Rust binary that evaluates commands against rule packs; no network service or key is involved.
Permission prompts ask about every command or broad categories; dcg evaluates the actual command content against curated destructive-command packs and can block, warn or ask per rule.
Run the installer with --easy-mode, then test it by attempting git reset --hard through your agent.
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