creditcard?card=string

Credit card validator, Luhn algorithm check, card number verification, card type detector, Visa Mastercard Amex Discover Diners JCB UnionPay brand identifier, PAN validation.

Credit card validator, Luhn algorithm check, card number verification, card type detector, Visa Mastercard Amex Discover Diners JCB UnionPay brand identifier, PAN validation. Validate credit card number via Luhn algorithm and identify card brand. Returns validity, card type, masked number. No payment processing, validation only. Accepts payment on Base or Solana — either network works.

UNRATEDListedProse in the URL

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.0022 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x4466d4a8…d6dd125e

URL

https://api.x402node.dev/validate/creditcard?card=string

Seen

first 35 days ago · last 4 days ago

63 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC, Solana

Listed on?

Base, Solana

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.734 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by latency p95 · gap to 1.000 is 0.266: 0.066 uncertain ? + 0.200 short ? · 0.066 to B

How the composite of 0.734 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.00	0.000		0.000	−0.200	0
liveness it answered at all	0.60	1.00	0.890		0.534	0	−0.066
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.734	gap to 1.000 = 0.266 · 0.200 short · 0.066 uncertain	0.734	−0.200	−0.066

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.200 × 0.000   latency p95    
+ 0.600 × 0.890   liveness       
+ 0.200 × 1.000   price stability
= 0.734           → UNRATED: 56 of 30 paid calls      weights 2026.09.6 · 56 samples · seed cap_01M1A5QGYA306HYE4Q7K5QKV66|2026-09-03T13:51:07.280Z|2026.09.6

Verify it yourselfnpx teppi-check https://api.x402node.dev/validate/creditcard?card=stringcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5QGYA306HYE4Q7K5QKV66