$0.03
per call · USD Coin on Base
🆕 B20 adds memos to transfers/mints/burns (transferWithMemo) for payment IDs, compliance tags and settlement correlation — a field ERC-20 has no equivalent for. Reads a token's on-chain Memo event history, optionally filtered by a specific memo (bytes32) or the caller wallet. The settlement-reconciliation primitive for agents paying over B20 stablecoins.
Endpoint
GET https://402.com.tr/api/x402/b20-memo4
Calls / 30d
1
Unique payers / 30d
Sep 10
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://402.com.tr/api/x402/b20-memo", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://402.com.tr/api/x402/b20-memo?address=0xb20000000000000000000186a08e781c38059eec" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"address": "0xb20000000000000000000186a08e781c38059eec",
"checkedAt": "2026-09-10T03:01:02.333Z",
"filtered": false,
"isB20": true,
"memoCount": 0,
"uniqueCallers": 0,
"uniqueMemos": 0,
"verdict": "no_memos"
}Payment details
0x973a31858f4d2125f48c880542da11a2796f12d6USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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