$0.05
per call · USD Coin on Base
Signed attestation (ECDSA plus a post-quantum ML-DSA-65 companion) 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. Pay in USDC on Base, Polygon, Arbitrum, or Solana.
Endpoint
POST https://api.insumermodel.com/v1/attest10
Calls / 30d
3
Unique payers / 30d
Sep 9
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://api.insumermodel.com/v1/attest", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"conditions": [
{
"chainId": 8453,
"contractAddress": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"threshold": "1",
"type": "token_balance"
}
],
"wallet": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
}),
});
const data = await res.json();curl -X POST \
"https://api.insumermodel.com/v1/attest" \
-H "Content-Type: application/json" \
-d '{"conditions":[{"chainId":8453,"contractAddress":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","threshold":"1","type":"token_balance"}],"wallet":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"data": {
"attestation": {
"id": "ATST-…",
"pass": true,
"results": [
{
"blockNumber": "0x…",
"conditionHash": "0x…",
"met": true
}
]
},
"kid": "insumer-attest-v2",
"sig": "…"
}
}Payment details
0xad982cb19acca2923df8f687c0614a7700255a23USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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