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Overview

GoldRush offers the most comprehensive Base 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 Base 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.

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.

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Mainnet

PropertyValue
Chain Namebase-mainnet
Chain ID8453
Network TypeFoundational Chain
Support Levelfoundational
Block ExplorerBase Explorer
Official WebsiteBase Website
Native Gas TokenETH

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Testnets

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Base Sepolia Testnet

PropertyValue
Chain Namebase-sepolia-testnet
Chain ID84532
PurposeDevelopment and testing network
Support Levelfoundational
Block ExplorerBase Sepolia Explorer
Official WebsiteBase Sepolia Testnet Website
Native Gas TokenETH

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Base Testnet

PropertyValue
Chain Namebase-testnet
Chain ID84531
PurposeDevelopment and testing network
Support Levelfoundational
Block ExplorerExplorer
Official WebsiteBase Testnet Website
Native Gas TokenEther

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API Usage

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

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Chain Name

  • base-mainnet (mainnet)

  • base-sepolia-testnet (testnet)

  • base-testnet (testnet)

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Example API Calls

curl -X GET "https://api.covalenthq.com/v1/base-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: "base-mainnet",
    walletAddress: "demo.eth"
});

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Foundational API Support

This chain supports 40 GoldRush Foundational APIs:

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Wallet API

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Pricing API

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Activity Feed API

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Block Explorer API

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Streaming API Support

This chain supports the following GoldRush Streaming APIs:

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Additional Resources