the402 endpoint detail

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api.insumermodel.com v1 attest

https://api.insumermodel.com/v1/attest

payable

Signed ECDSA attestation of on-chain wallet conditions across 38 chains: token balance, NFT ownership, EAS, Farcaster, view calls, ratio rules, and agent standing (ERC-8004 registration, ERC-7710 delegation validity with revocation proof). A verifiable boolean, never raw balances. Up to 10 conditions per pay-per-call request.

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
0xAd982CB19aCCa2923Df8F687C0614a7700255a23
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
103 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:10:37.542Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.insumermodel.com%2Fv1%2Fattest"