the402 endpoint detail

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qr-api-production-1836.up.railway.app generate styled

https://qr-api-production-1836.up.railway.app/generate/styled

payable

Generate a styled QR code PNG (base64 in JSON): custom foreground/background hex colours, module size, border, and error-correction level.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.001
Network
base
Pay to
0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
286 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:17:45.767Z (1d ago)
Category
ai-inference

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fqr-api-production-1836.up.railway.app%2Fgenerate%2Fstyled"