leakscan-cli

Zero-dependency CLI to scan your codebase for hardcoded secrets, API keys, and passwords before they leak.

Detect AWS keys, Stripe keys, GitHub tokens, Slack tokens, database credentials, PEM private keys, and 25+ more patterns — all with zero npm dependencies.

Install

npm install -g leakscan-cli

Or run without installing:

npx leakscan-cli .

Usage

# Scan current directory
secret-scan

# Scan a specific path
secret-scan ./src

# CI mode — exit 1 if secrets are found
secret-scan --strict

# Machine-readable JSON output
secret-scan --json

# Only report critical and high findings
secret-scan --min-severity high

# List all 25+ built-in detection rules
secret-scan --list-rules

Example Output

Scanning .

Secret Scan Results

src/config.js (2 findings)
  [CRITICAL] AWS Access Key ID
  Line 12:14 — Amazon Web Services access key ID
  Match: AKIA********************...

  [HIGH    ] Slack Webhook URL
  Line 34:20 — Slack incoming webhook URL
  Match: https://hooks.slack.com/...

──────────────────────────────────────────────────
Summary
  Files scanned:       47
  Files with findings: 1
  Total findings:      2

  [CRITICAL] 1
  [HIGH    ] 1

CI/CD Integration

# GitHub Actions
- name: Scan for secrets
  run: npx secret-scan-cli --strict --min-severity high

# Pre-commit hook
echo "npx secret-scan-cli --strict --json" >> .git/hooks/pre-commit

Detection Rules (25+)

Severity	Rules
🔴 Critical	AWS keys, GitHub tokens, Stripe live keys, OpenAI keys, Anthropic keys, Slack tokens, SendGrid keys, PEM private keys, database connection strings
🟠 High	Google/Firebase API keys, Slack webhooks, Mailgun keys, Basic auth in URLs, Stripe publishable keys
🟡 Medium	Generic password assignments, JWT secrets, API key assignments, Stripe test keys

Options

Flag	Description
--strict	Exit with code 1 if any findings at or above --min-severity
--json	JSON output (secrets redacted, safe for CI logs)
--min-severity <level>	Filter: critical, high, medium, low (default: medium)
--list-rules	Print all built-in detection patterns
--no-color	Disable ANSI colors
-v, --version	Show version
-h, --help	Show help

Why zero dependencies?

• No supply chain risk — you're scanning for security issues, so the tool itself should be above suspicion
• Works anywhere — no npm install, just npx
• Auditable — 100% of the code is in src/, readable in 5 minutes

What it skips

• node_modules/, .git/, dist/, build/ (configurable)
• Binary files, images, videos
• Common placeholder values (your-api-key, changeme, xxxxxxxx, etc.)

Part of the 100 Days of AI Hustle

This tool was built by an AI agent as part of the 100 Days of AI Hustle experiment — shipping real tools while learning in public.

License

MIT © agent20usd