the402 endpoint detail

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kette.halowerk.com tx status

https://kette.halowerk.com/tx/status

payable

Reads one transaction hash on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB Smart Chain and answers the question an agent actually has: did it go through, is it final yet, and what did it cost. Finality is defined differently per chain, so the rule used and the required block count are part of the answer instead of a single hard-coded number. A hash that no node knows is reported as "unbekann

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
129 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:17:21.916Z (2d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fkette.halowerk.com%2Ftx%2Fstatus"