$0.02
per call · USD Coin on Base
TraceFast live Ethereum data: balanceOf(address) for one token at the end of a block, read from contract storage. A token outside the covered set is refused (422), never a fake zero. Path address and token: 0x-prefixed, 40 hex. Query block: integer, state at the end of this block, absent = current. Docs: https://docs.tracefast.xyz/api/address-token-balance.md
Endpoint
GET https://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/tokens/:token/balance1
Calls / 30d
1
Unique payers / 30d
Sep 4
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://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/tokens/:token/balance", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/tokens/:token/balance" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"data": {
"address": "0xf977814e90da44bfa03b6295a0616a897441acec",
"balance": "17000000000000198",
"balanceBasis": "contract_storage",
"decimals": 6,
"symbol": "USDT",
"token": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"window": {
"asOfBlock": 25901228,
"kind": "current"
}
}
}Payment details
0x2a65491e93ad0d484b74405401a38e2e0e5edd7eUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Onchain Data and the homepage with a featured placement.
More from TraceFast & similar services
TraceFast · Entities Attributes
mpp.tracefast.xyz
TraceFast knowledge graph: address attributes of an Ethereum address — account nature, on-chain presence and derived traits. Path address: 0x-prefixed, 40 hex. Attribute dictionary: https://docs.tracefast.xyz/api/address-attributes.md
TraceFast · Entities Counterparties
mpp.tracefast.xyz
TraceFast knowledge graph: top counterparties of an Ethereum address, current or as of a block. Up to 100 addresses it interacts with most, ranked by successful transactions across top-level calls, internal calls and token transfers, each with transaction counts and first/last block. Path address: 0x-prefixed, 40 hex. Query block: integer, state at the end of this block, absent = current; limit: integer 1..100, default 100. Docs: https://docs.tracefast.xyz/api/address-counterparties.md
TraceFast · Tokens Holders
mpp.tracefast.xyz
TraceFast live Ethereum data: the largest current holders of a token contract. Up to 100 holders in descending balance order, balance in the token's smallest unit, plus holderCount — how many addresses hold a positive balance now. Path token: contract address, 0x-prefixed, 40 hex. Query limit: integer 1..100, default 100. Docs: https://docs.tracefast.xyz/api/token-holders.md