secret-detection

Secret detection skill using ripgrep pattern matching.

When to activate

Always activate this skill regardless of project language. Secrets can appear in any file type.

Scanner commands

Run each pattern separately via shell. Exclude lock files and node_modules from all scans.

AWS credentials

rg -n '(?i)(AKIA[0-9A-Z]{16}|aws.{0,20}secret.{0,20}['\''"][0-9a-zA-Z/+]{40})' --glob '!*.{lock,sum}' --glob '!node_modules/**'

GitHub tokens

rg -n '(ghp_[a-zA-Z0-9]{36}|github_pat_[a-zA-Z0-9]{22}_[a-zA-Z0-9]{59})' --glob '!*.{lock,sum}' --glob '!node_modules/**'

Generic secrets

rg -n '(?i)(password|secret|api_key|apikey|token)\s*[=:]\s*['\''"][^'\''"]{8,}' --glob '*.{py,js,ts,yaml,yml,json,env,toml,cfg,ini,conf}' --glob '!node_modules/**'

Private keys

rg -n 'BEGIN (RSA |EC |OPENSSH )?PRIVATE KEY' --glob '!node_modules/**'

Verification

For each match:

1. Check the file path. Skip these:

   • .env.example files
   • Test fixtures and mock data directories
   • Documentation and README files
   • Lock files (package-lock.json, uv.lock, go.sum)

2. Check the value. Skip if it contains:

   • Placeholder strings: "xxx", "changeme", "your-", "example", "TODO", "REPLACE", "insert", "dummy", "fake", "test"
   • Empty strings or whitespace-only values

3. Check the context. Skip if:

   • The variable is assigned from an environment variable (os.environ, process.env)
   • The value is overridden by runtime config

MUST flag

• Real AWS access keys (AKIA prefix + 16 uppercase alphanumeric chars)
• Private key blocks (BEGIN PRIVATE KEY) in source code
• Database connection strings with inline passwords
• Tokens matching known formats (ghp_, sk-live_, xoxb-) that are not placeholders

MUST NOT flag

• .env.example files with placeholder values
• Test fixtures with fake credentials
• Documentation examples showing credential format
• Lock files (package-lock.json, uv.lock, go.sum, yarn.lock)
• Variables named "secret" or "password" assigned empty strings or placeholder values
• Environment variable references (${SECRET}, os.getenv("SECRET"))