Why secret-guard?

Hardcoding secrets is the single most common — and most dangerous — mistake developers make. A leaked AWS key, GitHub token, or private key can cost you money, trust, and hours of damage control. secret-guard catches them in seconds, right on your own machine or in CI, before the secret goes public.

• 🔒 20+ detection rules: AWS keys, GitHub tokens, Stripe, Slack, Google API keys, JWTs, private keys, credential assignments, and more.
• 🧠 Entropy detection: flags high-entropy strings even when no pattern matches.
• 📁 gitignore-aware: automatically skips node_modules, .git, venv, and whatever your .gitignore already covers.
• 🚀 Zero dependencies for core scanning. Just pip install and go.
• ⚡ Fast: written in pure Python, no external services.
• 🪝 Git-hook guard: one command protects every future commit.

Install

pip install secret-guard-cli

Or run without installing (Python ≥ 3.8):

python -m secretguard

Quick start

# Scan the current directory
secret-guard scan

# Scan a specific path, show exactly what was found
secret-guard scan ./src

# Machine-readable output for CI / other tools
secret-guard scan --json

# Protect every future commit
cd your-repo
secret-guard install-hook

Example output

config.py:12 [HIGH    ] GitHub Token: ghp_**************
.env:4    [CRITICAL] Private Key: -----BEGIN [REDACTED]-----
app.py:40 [MEDIUM  ] Credential Assignment: password = 'hunter 2'

1 critical, 1 high, 1 medium, 0 low — 3 total

Secret values are masked by default. Use --show-value only when you need the full value (e.g. to rotate the key you just found).

Usage

$ secret-guard scan [path] [options]

Options:
  --exclude DIR     Skip additional directory names (repeatable)
  --no-entropy      Disable high-entropy string detection
  --json            Output findings as JSON
  --show-value      Print full secret values (default: masked)
  --staged          Scan only files staged for commit

Exit codes

• 0 — no secrets found (or help/version)
• 1 — at least one secret detected

Use this in CI:

- run: pip install secret-guard
- run: secret-guard scan .

Why this project matters

Every week, thousands of secrets leak into public repos. Tools like this one turn "oops, I pushed my key" from a weekly occurrence into a rare event. By using and contributing to secret-guard, you actively make the ecosystem safer.

Star the repo ⭐

If secret-guard helps you, starring the repo is the fastest way to help other developers find it. It's free, takes one click, and keeps the project alive.

Contributing

We welcome contributions of any size, including new detection rules, editor integrations, and docs. See CONTRIBUTING to get started.

Development

python -m unittest discover -s tests -v

Roadmap

• Pre-commit framework integration (pre-commit-hooks.yaml)
• Editor/CI extensions (GitHub Action, Visual Studio Code, pre-commit)
• SARIF output for GitHub code scanning
• More languages & custom-rule manifests
• Baseline / allowlist support

License

MIT