EAS attestations

List EAS (Ethereum Attestation Service) attestations for an address as recipient, attester, or either, on mainnet/Base/Optimism/Arbitrum/Sepolia. Send POST /api/eas-attestations with the required field address and pay $0.002 per call over x402 or MPP (there is no free tier). It returns a JSON object with address, network, role, count, attestations and 1 more.

Returns attestation id, attester, recipient, schema id, revocable/revoked flags, timestamp, and decoded data JSON. Use to verify Gitcoin Passport stamps, Coinbase verifications, KYC attestations, or any other on-chain claim about an address.

Category: Crypto & onchain data · Tags: eas attestations identity verification credentials

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Parameters

Example request

curl -i -X POST https://agent402.tools/api/eas-attestations \
  -H "Content-Type: application/json" \
  -d '{"address":"0xd8da6bf26964af9d7eed9e03e53415d37aa96045","network":"mainnet","limit":5}'

Without payment this returns HTTP 402 Payment Required with the exact price for eas-attestations; any x402 v2 or MPP client pays it and retries.

Example response

{
  "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
  "network": "mainnet",
  "role": "recipient",
  "count": 1,
  "attestations": [
    {
      "id": "0xabc...",
      "attester": "0xdef...",
      "recipient": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
      "schemaId": "0x123...",
      "revocable": true,
      "revoked": false,
      "timestamp": 1751234567,
      "decodedData": "[{\"name\":\"verified\",\"type\":\"bool\",\"value\":{\"value\":true}}]"
    }
  ],
  "source": "easscan"
}

From an MCP client

catalog.call {
  "slug": "eas-attestations",
  "params": {
    "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
    "network": "mainnet",
    "limit": 5
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for eas-attestations; the stdio package pays it from a wallet or from AGENT402_CREDITS_KEY. Local install: npx -y agent402-mcp.

Errors and behavior

• address is required. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example, so the caller can correct it.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Wallet-only: this tool reaches the network or stored state, so it has no proof-of-work tier. A prepaid card-credits key issued earlier (Authorization: Bearer a402_...) also pays it.
• A GET or HEAD to /api/eas-attestations returns the same 402 quote, so the price can be read without a body.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB is not replayed).

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
client.setSpendControls?.(false); // keep your own spending ceiling in code
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/eas-attestations", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
    "network": "mainnet",
    "limit": 5
  }),
});

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