the402 endpoint detail

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cdo-production.up.railway.app payments authorize

https://cdo-production.up.railway.app/v1/gb/payments/authorize

answers 402

Authorize one bounded UK company payment by composing supplier, invoice, payee and optional vendor-change gates. Use immediately before releasing a payment. Any incomplete, unavailable or mismatched gate returns HOLD or DENY, not approval.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.15
Network
base
Pay to
0x0D0E3539Da45c573AF8730045e7D5F634243f3d3
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
300 ms
Payment options
1 usable of 1
Last checked
2026-08-15T14:28:07.653Z (1h ago)
Category
identity

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fcdo-production.up.railway.app%2Fv1%2Fgb%2Fpayments%2Fauthorize"