@kszongic/luhn-cli

Validate and generate Luhn-checksum numbers (credit cards, IMEIs, national IDs) from the command line. Zero dependencies.

Install

npm install -g @kszongic/luhn-cli

Usage

# Validate a number
luhn validate 4539578763621486
# ✓ 4539578763621486 is valid

# Append check digit to a partial number
luhn generate 453957876362148
# 4539578763621486

# Generate a random valid number
luhn random 16
# 7284930156742839

# Shorthand — just pass a number
luhn 4539578763621486

Commands

| Command | Description | |---------|-------------| | validate <number> | Check if number passes Luhn algorithm | | generate <partial> | Append the correct check digit | | random [length] | Generate a random valid number (default: 16) |

License

MIT © 2026 kszongic