Overview

Start building on Arbitrum for free

Create an endpoint in under a minute. The Free plan includes 50 million compute units a month, and no credit card is required.

Try free

Arbitrum One is a Layer-2 scaling solution for Ethereum that uses optimistic rollups to enable faster and cheaper transactions while inheriting Ethereum’s security. Fully compatible with the Ethereum Virtual Machine (EVM), Arbitrum One allows developers to deploy existing Ethereum dApps with minimal changes and benefit from greater scalability. Block explorer: https://arbiscan.io/

Network Support

Network	HTTPS	WSS
Arbitrum One Mainnet	✅	✅
Arbitrum One Testnet (Sepolia)	✅	✅

WebSocket clients MUST respond to server ping frames, otherwise the connection will be closed and re-established every minute.

Getting Started

Send a request to check that your endpoint works. Replace <YOUR_API_KEY_HERE> with the key from your endpoint in the Validation Cloud app.

curl https://mainnet.arbitrum.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":0}'

curl https://sepolia.arbitrum.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":0}'

Connect over WebSocket:

wscat -c wss://mainnet.arbitrum.validationcloud.io/v1/wss/<YOUR_API_KEY_HERE>

wscat -c wss://sepolia.arbitrum.validationcloud.io/v1/wss/<YOUR_API_KEY_HERE>

Compute Units

Method	Compute units
debug_traceBlockByHash	80
debug_traceBlockByNumber	80
debug_traceCall	80
debug_traceTransaction	80
eth_accounts	20
eth_blockNumber	20
eth_call	40
eth_chainId	10
eth_estimateGas	40
eth_gasPrice	40
eth_getBalance	40
eth_getBlockByHash	40
eth_getBlockByNumber	40
eth_getBlockTransactionCountByHash	40
eth_getBlockTransactionCountByNumber	40
eth_getCode	40
eth_getFilterChanges	40
eth_getFilterLogs	40
eth_getLogs	80
eth_getStorageAt	40
eth_getTransactionByBlockHashAndIndex	40
eth_getTransactionByBlockNumberAndIndex	40
eth_getTransactionByHash	40
eth_getTransactionCount	40
eth_getTransactionReceipt	40
eth_getUncleByBlockHashAndIndex	40
eth_getUncleByBlockNumberAndIndex	40
eth_getUncleCountByBlockHash	40
eth_getUncleCountByBlockNumber	40
eth_maxPriorityFeePerGas	20
eth_newBlockFilter	40
eth_newFilter	40
eth_newPendingTransactionFilter	40
eth_sendRawTransaction	80
eth_subscribe	20
eth_syncing	10
eth_uninstallFilter	20
eth_unsubscribe	20
net_listening	10
net_peerCount	20
net_version	10
web3_clientVersion	40
web3_sha3	40

Node API

Account

Endpoints

Admin API

Resources

Chains

Network Support

Getting Started

Compute Units

​Network Support

​Getting Started

​Compute Units

Network Support

Getting Started

Compute Units