MCPInstall

secret-scanner

Detect exposed secrets, API keys, credentials, and tokens in code. Use before commits, on file saves, or when security is mentioned. Prevents accidental secret exposure. Triggers on file changes, git commits, security checks, .env file modifications.

Installs
74
Last 24h
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Trending rank
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Security
Not audited

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/ovachiever/droid-tings --skill secret-scanner
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads secret-scanner automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Secret Scanner Skill

Prevent accidental secret exposure in your codebase.

When I Activate

  • ✅ Before git commits
  • ✅ Files modified/saved
  • ✅ User mentions secrets, keys, or credentials
  • ✅ .env files changed
  • ✅ Configuration files modified

What I Detect

API Keys & Tokens

  • AWS access keys (AKIA...)
  • Stripe API keys (sk_live_..., pk_live_...)
  • GitHub tokens (ghp_...)
  • Google API keys
  • OAuth tokens
  • JWT secrets

Database Credentials

  • Database connection strings
  • MySQL/PostgreSQL passwords
  • MongoDB connection URIs
  • Redis passwords

Private Keys

  • SSH private keys
  • RSA/DSA keys
  • PGP/GPG keys
  • SSL certificates

Authentication Secrets

  • Password variables
  • Auth tokens
  • Session secrets
  • Encryption keys

Alert Examples

API Key Detection

// You type:
const apiKey = 'sk_live_1234567890abcdef';

// I immediately alert:
🚨 CRITICAL: Exposed Stripe API key detected!
📍 File: config.js, Line 3
🔧 Fix: Use environment variables
  const apiKey = process.env.STRIPE_API_KEY;
📖 Add to .gitignore: .env

AWS Credentials

# You type:
aws_access_key = "AKIAIOSFODNN7EXAMPLE"

# I alert:
🚨 CRITICAL: AWS access key exposed!
📍 File: aws_config.py, Line 1
🔧 Fix: Use AWS credentials file or environment variables
  aws_access_key = os.getenv("AWS_ACCESS_KEY_ID")
📖 Never commit AWS credentials

Database Password

# You type in docker-compose.yml:
environment:
  DB_PASSWORD: "mySecretPassword123"

# I alert:
🚨 CRITICAL: Database password in configuration file!
📍 File: docker-compose.yml, Line 5
🔧 Fix: Use .env file
  DB_PASSWORD: ${DB_PASSWORD}
📖 Add .env to .gitignore

Detection Patterns

Pattern Types

High Confidence:

  • Known API key formats (Stripe, AWS, etc.)
  • Private key headers
  • JWT tokens
  • Connection strings with credentials

Medium Confidence:

  • Variables named "password", "secret", "key"
  • Base64 encoded strings in sensitive contexts
  • Long random strings in assignments

Low Confidence (Flagged for Review):

  • Generic secret patterns
  • Potential credentials in comments

Git Integration

Pre-Commit Protection

# Before commit, I scan:
git add .
git commit

# I block if secrets found:
🚨 CRITICAL: Cannot commit - secrets detected!
📍 3 secrets found:
  - config.js:12 - API key
  - .env:5 - Database password (in gitignore - OK)
  - auth.js:45 - JWT secret

❌ Commit blocked - remove secrets first

.gitignore Validation

I check if sensitive files are in .gitignore:

✅ .env - In .gitignore (good)
⚠️ config/secrets.json - NOT in .gitignore (add it!)
✅ .aws/credentials - In .gitignore (good)

False Positive Handling

Example Files

// I understand these are examples:
// Example: const apiKey = 'your_api_key_here';
// TODO: Add your API key from environment

Test Files

// Test fixtures are OK (but flagged for review):
const mockApiKey = 'sk_test_1234567890abcdef';  // ✅ Test key

Documentation

<!-- Documentation examples are flagged but low priority -->
Set your API key: `export API_KEY=your_key_here`

Relationship with security-auditor

secret-scanner (me): Exposed secrets and credentials security-auditor: Code vulnerability patterns

Together

secret-scanner: Finds hardcoded API key
security-auditor: Finds how the key is used insecurely
Combined: Complete security picture

Quick Fixes

Move to Environment Variables

// Before:
const apiKey = 'sk_live_abc123';

// After:
const apiKey = process.env.API_KEY;

// .env file (add to .gitignore):
API_KEY=sk_live_abc123

Use Secret Management

// AWS Secrets Manager
const AWS = require('aws-sdk');
const secrets = new AWS.SecretsManager();
const secret = await secrets.getSecretValue({ SecretId: 'myApiKey' }).promise();

Configuration Files

# docker-compose.yml
services:
  app:
    environment:
      - API_KEY=${API_KEY}  # From .env file

# .env (gitignored)
API_KEY=sk_live_abc123

Sandboxing Compatibility

Works without sandboxing: ✅ Yes (recommended) Works with sandboxing: ✅ Yes

  • Filesystem: Read-only access
  • Network: None required
  • Configuration: None required

Customization

Add company-specific secret patterns:

cp -r ~/.claude/skills/security/secret-scanner \
      ~/.claude/skills/security/company-secret-scanner

# Edit SKILL.md to add:
# - Internal API key formats
# - Company-specific secret patterns
# - Custom detection rules

Best Practices

  1. Never commit secrets - Use environment variables
  2. Use .gitignore - Add .env, secrets.json, etc.
  3. Rotate exposed secrets - If committed, rotate immediately
  4. Use secret management - AWS Secrets Manager, HashiCorp Vault
  5. Audit regularly - Review code for exposed secrets

Emergency Response

If Secret Committed

  1. Rotate the secret immediately
  2. Remove from git history
    git filter-branch --force --index-filter \
      "git rm --cached --ignore-unmatch config/secrets.json" \
      --prune-empty --tag-name-filter cat -- --all
    
  3. Force push (coordinate with team)
  4. Update all deployments with new secret

Related Tools

  • security-auditor skill: Vulnerability detection
  • @code-reviewer sub-agent: Security review
  • /review command: Comprehensive security check

FAQ

What does the secret-scanner skill do?

Detect exposed secrets, API keys, credentials, and tokens in code. Use before commits, on file saves, or when security is mentioned. Prevents accidental secret exposure. Triggers on file changes, git commits, security checks, .env file modifications.

How do I install secret-scanner?

Run npx skills add https://github.com/ovachiever/droid-tings --skill secret-scanner in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/secret-scanner/ (personal) or .claude/skills/secret-scanner/ (project).

Which AI agents can use secret-scanner?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is secret-scanner safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains secret-scanner?

It is published by ovachiever in ovachiever/droid-tings. It has 74 recorded installs.

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