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Overview

GoldRush offers the most comprehensive zkSync Era 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 zkSync Era Data APIs provide fast, accurate, and developer-friendly access to the essential onchain data you need.

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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.

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Mainnet

PropertyValue
Chain Namezksync-mainnet
Chain ID324
Network TypeFrontier Chain
Support Levelfrontier
Block ExplorerExplorer
Official WebsitezkSync Era Website
Native Gas TokenETH

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Testnet

PropertyValue
Chain Namezksync-sepolia-testnet
Chain ID300
PurposeDevelopment and testing network
Support Levelfrontier
Block ExplorerExplorer
Official WebsitezkSync Sepolia Testnet Website
Native Gas TokenETH

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API Usage

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

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Chain Name

  • zksync-mainnet (mainnet)
  • zksync-sepolia-testnet (testnet)

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Example API Calls

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

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SDK Usage

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

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

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Foundational API Support

This chain supports 31 GoldRush Foundational APIs:

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Pricing API

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Activity Feed API

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Block Explorer API

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Additional Resources