​
Overview

GoldRush offers the most comprehensive Ethereum Data API suite for developers, analysts, and enterprises. Whether you’re building a DeFi dashboard, a wallet, a trading bot, an AI agent or a compliance platform, our Ethereum Data APIs provide fast, accurate, and developer-friendly access to the essential onchain data you need.

​
Supported APIs

Foundational API

Access structured historical blockchain data across 100+ chains using REST APIs. Get token balances, transaction histories, decoded event logs, NFT assets, token holders and more.

Use cases: Wallets, portfolio trackers, crypto accounting & tax tools, and DeFi dashboards.

Streaming API

Subscribe to real-time blockchain events with sub-second latency using GraphQL over WebSockets. Track token transfers, DEX activity, wallet movements, and OHLCV candlestick data across fast chains like Base and Solana.

Use cases: Trading bots & dashboards, gaming, and AI Agents.

​
Mainnet

PropertyValue
Chain Nameeth-mainnet
Chain ID1
Network TypeFoundational Chain
Support Levelfoundational
Block ExplorerEtherscan
Official WebsiteEthereum Website
Native Gas TokenETH

​
Testnets

​
Holesky Testnet

PropertyValue
Chain Nameeth-holesky
Chain ID17000
PurposeDevelopment and testing network
Support Levelfrontier
Block ExplorerHolesky Etherscan
Official WebsiteHolesky Testnet Website
Native Gas TokenETH

​
Ethereum Sepolia Testnet

PropertyValue
Chain Nameeth-sepolia
Chain ID11155111
PurposeDevelopment and testing network
Support Levelfoundational
Block ExplorerSepolia Etherscan
Official WebsiteEthereum Sepolia Testnet Website
Native Gas TokenETH

​
API Usage

To use this blockchain network in GoldRush API calls, use:

​
Chain Name

  • eth-mainnet (mainnet)
  • eth-holesky (testnet)
  • eth-sepolia (testnet)

​
Example API Calls

curl -X GET "https://api.covalenthq.com/v1/eth-mainnet/address/demo.eth/balances_v2/?key=API_KEY"

​
SDK Usage

import { GoldRushClient } from "@covalenthq/client-sdk";

const client = new GoldRushClient("API_KEY");
const resp = await client.BalanceService.getTokenBalancesForWalletAddress({
    chainName: "eth-mainnet",
    walletAddress: "demo.eth"
});

​
Foundational API Support

This chain supports 49 GoldRush Foundational APIs:

​
Wallet API

​
NFT API

​
Pricing API

​
Security API

​
Activity Feed API

​
Block Explorer API

​
Streaming API Support

This chain supports the following GoldRush Streaming APIs:

​
Additional Resources