Fantom API

Token balances with prices, transaction history and token approvals for any Fantom address, indexed from genesis to the latest block, plus JSON-RPC for Fantom with archive depth. One API key, no nodes to run.

Get a free API keyRead the Fantom docs
// Token balances on Fantom: 1 credit
const chain = "fantom-mainnet";
const address = "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045";
const url = "https://api.covalenthq.com/v1/" + chain +
  "/address/" + address + "/balances_v2/";

const key = process.env.GOLDRUSH_API_KEY;
const res = await fetch(url, {
  headers: { Authorization: `Bearer ${key}` },
});
const { data } = await res.json();

for (const token of data.items) {
  // balance, quote (USD value), quote_rate …
  console.log(token.contract_ticker_symbol, token.pretty_quote);
}

Used by EY, Fidelity and Consensys

  • EY
  • Fidelity
  • Consensys
  • Jump
  • Ondo
  • ThorWallet
  • Rainbow
  • Matcha
  • Velora
  • AtomicWallet
  • Atlas Wallet
  • OneKey
Read the case studies

Query Fantom data

REST endpoints that return decoded, priced Fantom data in one call, billed in credits per request. The same key works on every other chain GoldRush supports.

Every endpoint supported on Fantom

Fantom RPC endpoint

Standard eth_*, net_* and web3_* methods plus debug_* and trace_*, with archive depth, drop-in for viem, ethers, web3.js and web3.py. GoldRush routes each call to the best of several upstream providers, from regional edge locations, with a 99.9% production SLA. It uses the same API key and credits as the rest of GoldRush.

  • Standard: eth_*, net_* and web3_* methods0.01 credits per call
  • Trace: debug_* and trace_* methods0.015 credits per call
JSON-RPC quickstartMigrate from Infura, Alchemy or AnkrJSON-RPC pricing
// ethers v6, pointed at the GoldRush endpoint
import { ethers } from "ethers";

const url = "https://rpc.goldrushdata.com/v1/fantom-mainnet";
const req = new ethers.FetchRequest(url);
const key = process.env.GOLDRUSH_API_KEY;
req.setHeader("Authorization", `Bearer ${key}`);
const provider = new ethers.JsonRpcProvider(req);

console.log(await provider.getBlockNumber());

Fantom on GoldRush

GoldRush serves decoded Fantom data through one REST API. Network covered: fantom-mainnet (chain ID 250, 2-second blocks), with block explorer data from ftmscan.com. The Foundational API returns token balances, historical transactions and wallet activity, and token approvals data.

fantom-mainnetCommunity chain
Chain name
fantom-mainnet
Chain ID
250
Block time
2 s
Gas token
FTM
Block explorer
ftmscan.com
Last synced block
Loading...
JSON-RPC endpoint
https://rpc.goldrushdata.com/v1/fantom-mainnet
Data last updated . The last synced block refreshes every 5 seconds.

Chain details from the Fantom chain reference.

What teams build on Fantom

  • Wallets and portfolio trackers

    Show what any Fantom address holds, priced in USD, next to its full transaction history.

    Crypto wallet API

  • Crypto tax and accounting

    Pull every Fantom transaction for a client's addresses and reconcile it into reports.

    Tax and accounting data

  • DeFi dashboards

    Track Fantom positions, tokens and protocol activity without running an indexer.

    DeFi data

  • Risk and compliance

    Review Fantom counterparties and their activity before you onboard or pay them.

    Risk and compliance data

  • Analytics and research

    Answer questions about Fantom wallets and tokens from indexed history instead of raw RPC.

    Analytics data

  • AI agents

    Give Claude, Cursor and other agents Fantom data through the hosted GoldRush MCP server.

    GoldRush MCP server

Start building on Fantom

Every account starts with a 14-day free trial: 25,000 credits at 4 requests per second, no credit card. After that, Vibe Coding is $10 a month for prototypes and side projects, and Professional is $250 a month with 50 requests per second for production.

Get a free API keySee pricing

Fantom FAQ

Yes. https://rpc.goldrushdata.com/v1/fantom-mainnet serves Fantom JSON-RPC on your GoldRush API key, sent as an Authorization: Bearer header. Standard methods cost 0.01 credits per call and debug and trace methods 0.015. See the JSON-RPC quickstart.

Fantom API docs

Start here

Reference

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