Arbitrum Onchain Data API

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.

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.

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

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

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

SDK Usage

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

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

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

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

Foundational API Support

This chain supports 24 GoldRush Foundational APIs:

Wallet API

Internal Transactions (`with-internal`)

Arbitrum supports internal transactions (traces). The Transactions API endpoints marked with-traces above accept the with-internal=true query parameter, which includes internal transactions (the value transfers triggered by contract execution that are not recorded as standalone onchain transactions) in the response.

Internal transactions are included in the response by passing with-internal and cost 0.05 credits/item.

Example API Call

Recent transactions with internal transactions

curl -X GET "https://api.covalenthq.com/v1/arbitrum-mainnet/address/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045/transactions_v3/?with-internal=true&key=<GOLDRUSH_API_KEY>"

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

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":[]}'

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_getBalance","params":["0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","latest"]}'

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.

Overview

Popular Chains 🔥

Foundational Chains

Frontier Chains

Community Chains

Archived Chains

Overview

Supported APIs

Foundational API

JSON-RPC

Mainnet

Testnet

API Usage

Chain Name

Example API Calls

SDK Usage

Foundational API Support

Wallet API

NFT API

Pricing API

Security API

Transactions API

Block Explorer API

Internal Transactions (`with-internal`)

Example API Call

JSON-RPC

Endpoint

Example JSON-RPC Calls

Sample Methods

Additional Resources

​Overview

​Supported APIs

Foundational API

JSON-RPC

​Mainnet

​Testnet

​API Usage

​Chain Name

​Example API Calls

​SDK Usage

​Foundational API Support

​Wallet API

​NFT API

​Pricing API

​Security API

​Transactions API

​Block Explorer API

​Internal Transactions (with-internal)

​Example API Call

​JSON-RPC

​Endpoint

​Example JSON-RPC Calls

​Sample Methods

​Additional Resources

Overview

Supported APIs

Mainnet

Testnet

API Usage

Chain Name

Example API Calls

SDK Usage

Foundational API Support

Wallet API

NFT API

Pricing API

Security API

Transactions API

Block Explorer API

Internal Transactions (`with-internal`)

Example API Call

JSON-RPC

Endpoint

Example JSON-RPC Calls

Sample Methods

Additional Resources