ScriptMasterLabs.com · x402 Directory
Attest a settled call on Base
Resource: https://agent402.tools/api/attest · Directory page generated 2026-11-06T22:42:22.393Z from live sources.
The facts, as last reported 2026-11-06T22:21:01.772Z: this resource answers x402 payment challenges at 0.05 USDC on Base (exact), pay to 0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0. It is reported by PayAI, Coinbase CDP and its directory state is live.
What it does
Write an on-chain attestation (Ethereum Attestation Service on Base) that binds a call you paid for to the bytes you received: the tool slug, sha256 of the JSON response, the settlement chain and transaction, the payer, the time served and
Payment options
| Network | Scheme | Asset | Amount | Pay to |
|---|---|---|---|---|
| Baseeip155:8453 | exact | USDC0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 | 0.0550000 atomic | 0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0 |
| Polygoneip155:137 | exact | USDC0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 | 0.0550000 atomic | 0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0 |
| Arbitrumeip155:42161 | exact | USDC0xaf88d065e77c8cC2239327C5EDb3A432268e5831 | 0.0550000 atomic | 0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0 |
| EVM 143eip155:143 | exact | 0x754704Bc059F8C67012fEd69BC8A327a5aafb603 | 0.0550000 atomic | 0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0 |
| Avalancheeip155:43114 | exact | 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E | 0.0550000 atomic | 0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0 |
| EVM 1329eip155:1329 | exact | 0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392 | 0.0550000 atomic | 0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0 |
Verification — the enrichment record
| Verification state | facilitator-reported |
|---|---|
| Verified / reported at | 2026-11-06T22:21:01.772Z |
| Settlement recency | listing last updated 2026-11-06T21:46:24.998Z at its source |
| Freshness | live — last reported 2026-11-06T22:21:01.772Z, listing last updated at source 2026-11-06T21:46:24.998Z |
| Reporting facilitator | PayAI |
| Sources | payai, cdp |
| Tags | agent, attestation, eas, provenance, receipt |
Call it
An unpaid call returns the live 402 challenge — that challenge, not this page, is the price quote:
curl -i "https://agent402.tools/api/attest"
Pay it with any x402 client on Base, Polygon, Arbitrum, EVM 143, Avalanche, EVM 1329. Networks: Base · Polygon · Arbitrum · EVM 143 · Avalanche · EVM 1329