Arbitrum Onchain Data API

Get token balances and transactions for Arbitrum. 24 endpoints supported. Testnet supported.

Overview

Arbitrum is Ethereum’s leading L2 rollup, combining full EVM equivalence with dramatically lower fees. Trusted by major DeFi protocols for secure, scalable smart contract execution.

Note about how we calculate transaction fees on Arbitrum:

Generally, the fees_paid in our transaction response is simply the product of gas_price and gas_spent .

However for Arbitrum, the fees_paid in our transaction response is the sum of multiple L1 and L2 fees associated with the function call, transaction execution and storage.

To calculate the same fees_paid provided in our transaction response from Arbiscan , take the product of their Gas Price Bid and Gas Usage.

GoldRush offers the most comprehensive Arbitrum 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 Arbitrum 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.

Read docs

JSON-RPC

Low-latency EVM JSON-RPC with global failover and archive depth. Point your existing tooling at the GoldRush endpoint — no code changes required.

Use cases: dApps, wallets, indexers, bots, and trading infrastructure.

Read docs

Mainnet

Property	Value
Chain Name	arbitrum-mainnet
Chain ID	42161
Network Type	Frontier Chain
Support Level	frontier
Block Explorer	Arbiscan
Official Website	Arbitrum Website
Native Gas Token	ETH

Testnet

Property	Value
Chain Name	arbitrum-sepolia
Chain ID	421614
Purpose	Development and testing network
Support Level	frontier
Block Explorer	Sepolia Arbiscan
Official Website	Arbitrum Sepolia Testnet Website
Native Gas Token	ETH

API Usage

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

Chain Name

• arbitrum-mainnet (mainnet)
• arbitrum-sepolia (testnet)

Example API Calls

Chain Name (Mainnet)

curl -X GET "https://api.covalenthq.com/v1/arbitrum-mainnet/address/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045/balances_v2/?key=<GOLDRUSH_API_KEY>"

SDK Usage

TypeScript SDK (Mainnet)

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

const client = new GoldRushClient("<GOLDRUSH_API_KEY>");
const resp = await client.BalanceService.getTokenBalancesForWalletAddress({
    chainName: "arbitrum-mainnet",
    walletAddress: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
});

Foundational API Support

This chain supports 24 GoldRush Foundational APIs:

Wallet API

• Get token holders as of any block height (v2) on Arbitrum
• Get token balances for address on Arbitrum
• Get native token balance for address on Arbitrum
• Get historical portfolio value over time on Arbitrum
• Get ERC20 token transfers for address on Arbitrum

NFT API

• Get NFTs for address on Arbitrum

Pricing API

• Get historical token prices on Arbitrum

Security API

• Get token approvals for address on Arbitrum

Transactions API

• Get a transaction on Arbitrum with-traces
• Get transaction summary for address on Arbitrum
• Get earliest transactions for address (v3) on Arbitrum with-traces
• Get recent transactions for address (v3) on Arbitrum with-traces
• Get paginated transactions for address (v3) on Arbitrum with-traces
• Get bulk time bucket transactions for address (v3) on Arbitrum
• Get all transactions in a block (v3) on Arbitrum
• Get all transactions in a block by page (v3) on Arbitrum

Block Explorer API

• Get a block on Arbitrum
• Get all chain statuses on Arbitrum
• Get all chains on Arbitrum
• Get block heights on Arbitrum
• Get gas prices on Arbitrum
• Get log events by contract address on Arbitrum
• Get log events by topic hash(es) on Arbitrum
• Get logs on Arbitrum

JSON-RPC

Arbitrum is available on the GoldRush JSON-RPC service. Point your existing EVM tooling (ethers.js, viem, web3.js, or raw HTTP) at the GoldRush endpoint — the standard eth_*, net_*, web3_*, debug_*, and trace_* methods are supported.

Endpoint

https://rpc.goldrushdata.com/v1/arbitrum-mainnet

Example JSON-RPC Calls

eth_blockNumber

curl https://rpc.goldrushdata.com/v1/arbitrum-mainnet \
  -H "Authorization: Bearer <GOLDRUSH_API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'

Sample Methods

• eth_blockNumber on Arbitrum
• eth_getBalance on Arbitrum
• eth_call on Arbitrum
• eth_getLogs on Arbitrum
• eth_getTransactionReceipt on Arbitrum

See the full method list and per-method examples for Arbitrum.

Additional Resources

• GoldRush API Documentation
• Supported Chains List
• API Reference