the402 endpoint detail

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cdo-production.up.railway.app invoices match-company

https://cdo-production.up.railway.app/v1/gb/invoices/match-company

answers 402

Compare UK invoice identity fields with Companies House before payment. Use to detect company-name or registered-postcode mismatches. This does not prove invoice authenticity or VAT registration, and UNKNOWN fields remain explicit.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.05
Network
base
Pay to
0x0D0E3539Da45c573AF8730045e7D5F634243f3d3
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
47 ms
Payment options
1 usable of 1
Last checked
2026-08-15T14:28:08.139Z (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%2Finvoices%2Fmatch-company"