B

B20 Portfolio Guard · B20 Portfolio

by B20 Portfolio Guard

GETBasePolygon

$0.06

per call · USD Coin on Base

🆕 Scans a wallet's B20 (Base-native) holdings for protocol-level freeze/seize powers and whether YOUR address is ALREADY blocked on any of them — the risk no ERC-20 portfolio tool can see. Returns per-token seizable/freezable/rebase flags plus a wallet-level verdict. Built for agents holding Base positions.

Endpoint

GET https://402.com.tr/api/x402/b20-portfolio

3

Calls / 30d

2

Unique payers / 30d

Sep 1

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
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-portfolio", {
  method: "GET",
});
const data = await res.json();
cURL
curl -X GET \
  "https://402.com.tr/api/x402/b20-portfolio?wallet=0x973a31858f4d2125f48c880542da11a2796f12d6" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "b20Count": 0,
  "blockedCount": 0,
  "checkedAt": "2026-08-20T03:00:11.866Z",
  "holdingsCount": 0,
  "seizableCount": 0,
  "verdict": "no_b20",
  "wallet": "0x973a31858f4d2125f48c880542da11a2796f12d6"
}

Payment details

Pay to0x973a31858f4d2125f48c880542da11a2796f12d6
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase, Polygon
Schemesexact

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