Credit Card Validator API

What does the Credit Card Validator API do?

The Credit Card Validator API helps you reject mistyped or invalid card numbers early in checkout flows. It applies the Luhn algorithm and returns detected card network hints so your UI can show appropriate icons and validation messages. Pair this with your PCI-compliant payment processor — this API validates structure, not funds or fraud risk.

Use cases

• E-commerce checkout field validation
• Subscription billing forms
• POS and invoicing tools
• Data cleanup for legacy card number fields

Code examples

Replace endpoint paths and hosts with the values shown in your RapidAPI subscription dashboard.

cURL

curl -X GET "https://credit-card-validator3.p.rapidapi.com/validate?number=4111111111111111" \
  -H "X-RapidAPI-Key: YOUR_RAPIDAPI_KEY" \
  -H "X-RapidAPI-Host: credit-card-validator3.p.rapidapi.com"

Node.js (fetch)

const response = await fetch("https://credit-card-validator3.p.rapidapi.com/validate?number=4111111111111111", {
  headers: {
    "X-RapidAPI-Key": process.env.RAPIDAPI_KEY,
    "X-RapidAPI-Host": "credit-card-validator3.p.rapidapi.com"
  }
});

const data = await response.json();
console.log(data);

Python (requests)

import requests

response = requests.get(
    "https://credit-card-validator3.p.rapidapi.com/validate?number=4111111111111111",
    headers={
        "X-RapidAPI-Key": "YOUR_RAPIDAPI_KEY",
        "X-RapidAPI-Host": "credit-card-validator3.p.rapidapi.com",
    },
)
print(response.json())

Response schema

{
  "number": "4111111111111111",
  "valid": true,
  "brand": "visa",
  "luhn_valid": true
}

Pricing

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FAQ