EIP-712 signed reputation scores for any wallet on Base. Cryptographically verifiable on-chain. Free to fetch, free to verify, $0.25 for premium audit. The flag that turns an HTTP read into oracle-grade trust.
0x7397adb9713934c36d22aa54b4dbbcd70263592b · basescan · ABI · source
npm i @raskhaaa/mainstreet-oracle viem
import { requireMinScore } from '@raskhaaa/mainstreet-oracle/verifier';
import * as viem from 'viem';
// throws if score < 30 or signature invalid
const score = await requireMinScore('0xAgentAddr', 30, viem);
// proceed with payment / interactionconst att = await fetch('https://avisradar.app/api/agent/attestation/0xAgentAddr').then(r => r.json());
const r = await fetch('https://avisradar.app/api/agent/verify', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ payload: att.payload, signature: att.signature, minScore: 30 }),
});
const { valid, score } = await r.json();interface IMainStreetVerifier {
function requireMinScore(
bytes32 subject, uint8 minScore,
uint8 score, uint64 timestamp, uint64 nonce,
bytes calldata signature
) external view returns (bool);
}
IMainStreetVerifier constant MS = IMainStreetVerifier(0x7397adb9713934c36d22aa54b4dbbcd70263592b);
function payAgent(address agent, /* ...attestation calldata */) external {
MS.requireMinScore(subject, 30, score, timestamp, nonce, sig);
// ... your payment logic ...
}| Surface | Trust model | Cost |
|---|---|---|
HTTP read of /score | You trust MainStreet's HTTP server | Free |
| Off-chain EIP-712 verify | You trust MainStreet's signing key (the deployer of the verifier contract) | Free |
| On-chain via deployed verifier | Solidity proof. Tx reverts if signer ≠ operator or signature ≠ payload | ~$0.00003 in gas |
Premium /audit | Bundled signed payload + 18 identity proofs + SLA + settlements | $0.25 USDC via x402 |
Schema (must match off-chain signer):
Attestation(
string version, // "mainstreet-v1"
string subjectType, // "agent-onchain"
bytes32 subject, // sha256(toLowerCase(address))
uint8 score, // 0-100
uint64 timestamp, // unix seconds, ≤24h old
address operator, // 0xAC3ca7c5d3cDD7702fd08F9C4C28dAA22296aDa9
uint64 nonce // unique per attestation
)Domain: { name: "MainStreet", version: "1", chainId: 8453 }. No verifyingContract — attestations are off-chain artifacts that any reader can verify against the deployed contract's OPERATOR().