Arbitrum Nova RPC Endpoint

Flat-rate Arbitrum Nova RPC provider and Arbitrum Nova RPC node access: free tier, no KYC, HTTP & WebSocket. Arbitrum Nova mainnet chain ID 42170.

Nova is an Arbitrum chain using the AnyTrust data-availability model: transaction data goes to a committee instead of Ethereum calldata, which cuts fees sharply at the cost of a different trust assumption.

About Arbitrum Nova

Arbitrum launched Nova in August 2022 as a companion to Arbitrum One for applications that prioritise cheap throughput over maximal data availability. Both are Nitro-stack optimistic rollups secured by fraud proofs and settlement on Ethereum, but Nova's cost structure makes it the usual choice for high-volume, low-value activity such as gaming and social applications.

From the RPC side Nova behaves like other Arbitrum chains — standard eth_* plus the chain-specific quirks of a sequenced rollup, including a gas limit field that is a sentinel rather than real capacity. The chain ID you need is 42170.

Common Use Cases on Arbitrum Nova

• Gaming and high-frequency state
• Social applications
• Micro-payments
• Cost-sensitive DeFi

Arbitrum Nova Mainnet RPC URL (HTTP)

Arbitrum Nova WebSocket RPC URL

Quick Start: Connect to Arbitrum Nova

cURL

curl -X POST https://rpc.swiftnodes.io/rpc/arbitrum-nova?key=YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

ethers.js

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider(
  "https://rpc.swiftnodes.io/rpc/arbitrum-nova?key=YOUR_API_KEY"
);

const blockNumber = await provider.getBlockNumber();
console.log("Arbitrum Nova block:", blockNumber);

viem

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://rpc.swiftnodes.io/rpc/arbitrum-nova?key=YOUR_API_KEY"),
});

const blockNumber = await client.getBlockNumber();

web3.py

from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://rpc.swiftnodes.io/rpc/arbitrum-nova?key=YOUR_API_KEY"))
print("Arbitrum Nova block:", w3.eth.block_number)

Add Arbitrum Nova to MetaMask

Features of SwiftNodes for Arbitrum Nova

• Load-balanced across multiple upstream nodes wherever a chain has more than one, with automatic failover
• Health-checked every 2 minutes with automatic failover
• Free tier available — no credit card or KYC required
• Flat-rate monthly pricing with no per-request fees
• HTTP and WebSocket support
• One API key works across all 75+ supported chains, including Arbitrum Nova

Rate Limits

Arbitrum Nova RPC methods

Measured weekly through this endpoint: what each method returns on Arbitrum Nova, its limits, and an example request.

• eth_blockNumbersupported
• eth_chainIdsupported
• eth_getBalancesupported
• eth_getBlockByNumbersupported
• eth_getTransactionByHashsupported
• eth_getTransactionReceiptsupported
• eth_callsupported
• eth_estimateGassupported
• eth_gasPricesupported
• eth_maxPriorityFeePerGassupported
• eth_sendRawTransactionsupported
• eth_getTransactionCountsupported
• eth_getCodesupported
• eth_subscribesupported
• eth_getLogssupported
• eth_getBlockReceiptssupported
• eth_feeHistorysupported
• eth_getProofsupported
• eth_createAccessListsupported
• debug_traceCallsupported
• trace_blocknot available
• trace_transactionnot available

Related L2 & rollup chains

Explore RPC endpoints for other L2 & rollup networks on SwiftNodes: