the402 endpoint detail

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ident.halowerk.com v1 aa-simulate

https://ident.halowerk.com/v1/aa-simulate

answers 402

Validates a UserOperation structurally and against chain state. It computes the required prefund from the gas limits and fee fields, reads the sender deposit on the EntryPoint and, when a paymaster is set, that paymaster deposit and stake, and says plainly whether the operation is funded. The nonce is read from the EntryPoint and compared with the one supplied, so a stale nonce is caught before su

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
573 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:23:48.651Z (28d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fident.halowerk.com%2Fv1%2Faa-simulate"