{"resource":"https://checkdigit.openverbs.com/v1/luhn","service":"Luhn check","areas":["other"],"answering":true,"http_status":402,"latency_ms":428,"price_usdc":0.002,"buyers_30d":2,"calls_30d":2,"description":"Validate a number by the Luhn (mod-10) algorithm — the scheme behind credit/debit card numbers and many IDs. Spaces and hyphens are ignored. A mismatched check digit is a successful { valid: false }.","id":"f8d3a4cb67c8","category":"Developer tools and utilities","accuracy":null,"tool_calls":null,"checked_day":"2026-10-11","page":"https://velliumandco.com/sellers/f8d3a4cb67c8"}