API · /creditcard-api

Credit Card API

healthy 4,561 Subscribers

A fast, fully-local payment-card toolkit: validate card numbers with the Luhn (mod-10) checksum, detect the brand by IIN/prefix (Visa, Mastercard including the 2-series, American Express, Discover, Diners, JCB, UnionPay, Maestro), format and mask numbers with brand-correct grouping, list supported brands with their valid lengths and CVV length, and generate synthetic Luhn-valid TEST card numbers for QA. Pure server-side compute, no third-party upstream, and inputs are never logged. It is algorithmic only (no real issuer/bank BIN-database lookup). Ideal for checkout forms, payment flows, fraud pre-checks and test fixtures.

#creditcard #payments #luhn #validation #bin #fintech #dev-tools

api.oanor.com/creditcard-api

Get an API key Try in playground → Contact provider

Machine-readable spec so AI agents can integrate this API.

/api/creditcard-api/openapi.json

/api/creditcard-api/llms.txt

Discovery: GET /api/index.json lists every API.

Credit Card API — live data on the oanor API marketplace

API health

healthy

Uptime: 100.00%; Server probes · 24h
Avg latency: 81 ms; Server probes · 24h
Subscribers: 4,561; active
Total calls: 80; last 7 days

Full status page → · 16 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

5,000 calls / month
2 requests / second
Hard cap (429 above quota, no overage)
5,000 calls/month, 2 req/s
Luhn validation + card-brand detection by IIN/prefix
No credit card, inputs never logged

Basic

€7.00 /month

100,000 calls / month
12 requests / second
Hard cap (429 above quota, no overage)
100,000 calls/month, 12 req/s
All endpoints: validate, format, mask, brands catalog
Synthetic Luhn-valid TEST card generation for QA
Commercial use, email support

Pro

€24.00 /month

700,000 calls / month
40 requests / second
Hard cap (429 above quota, no overage)
700,000 calls/month, 40 req/s
Full validation + brand + format/mask + TEST-generation suite
Priority email support, commercial use

Mega

€69.00 /month

4,000,000 calls / month
150 requests / second
Hard cap (429 above quota, no overage)
4,000,000 calls/month, 150 req/s
All endpoints at highest throughput
Priority support, commercial use, inputs never logged

Built by

PremiumApi

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api.oanor.com/litecoin-api

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api.oanor.com/stellar-api

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api.oanor.com/xrpl-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Credit Card API?

Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Credit Card API with the x-oanor-key header. No credit card needed for the free tier.

What's the rate limit for Credit Card API?

Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.

How much does Credit Card API cost?

Credit Card API has a free tier with 100 calls / month. Paid plans start at €7.00 / month with higher quotas and faster rate limits.

Can I cancel my subscription anytime?

Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.

Is Credit Card API GDPR-compliant?

All requests to Credit Card API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Card 4

Pick an endpoint from the list on the left to see its details and try it.

GET /v1/brands

List supported brands

Playground

Custom headers

Language: Client:

GET /v1/format

Format a card number

Playground

Parameters

Custom headers

Language: Client:

GET /v1/generate

Generate Luhn-valid TEST numbers

Playground

Parameters

Custom headers

Language: Client:

GET /v1/validate

Validate a card number

Playground

Parameters

Custom headers

Language: Client:

Code snippets

curl https://api.oanor.com/creditcard-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."

const res = await fetch("https://api.oanor.com/creditcard-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();

$ch = curl_init("https://api.oanor.com/creditcard-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);

import requests
r = requests.get(
    "https://api.oanor.com/creditcard-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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Credit Card API

API health

Pricing

Built by

Related APIs

Plasma API

Litecoin API

Stellar (XLM) On-Chain API

XRP Ledger (XRPL) API

Frequently asked questions

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