the402 endpoint detail

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handel.halowerk.com v1 po-invoice-match

https://handel.halowerk.com/v1/po-invoice-match

answers 402

Compares a purchase order against a delivery note and an invoice, line by line. Lines are paired by article number where both sides carry one, and otherwise by text similarity — a text pairing is marked as such with its similarity score, because quietly matching on similar wording is exactly how a wrong invoice gets approved.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.002
Network
base
Pay to
0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
513 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:23:47.448Z (21d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fhandel.halowerk.com%2Fv1%2Fpo-invoice-match"