---
title: "Arbitrum Sepolia API"
description: "Arbitrum Sepolia JSON-RPC endpoints and method reference"
url: "https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/"
---

# Arbitrum Sepolia API

Arbitrum Sepolia endpoints use the EVM JSON-RPC Core API. Try methods on the public endpoint, and [create an endpoint](https://blockreq.com/docs/getting-started/create-endpoint/index.md) for a private URL with an API key.

## Endpoint

| Item | Value |
| --- | --- |
| Network | Arbitrum Sepolia (Testnet) |
| Chain ID | `421614` (`0x66eee`) |
| Public HTTPS | `https://arbitrum-sepolia-rpc.blockreq.com/v1/rpc/public` |
| Private HTTPS | `https://arbitrum-sepolia-rpc.blockreq.com/v1/rpc/BRQ1P0000000000000000000000000000000000000000000000000000000` |
| Public WSS | `wss://arbitrum-sepolia-rpc.blockreq.com/v1/rpc/public` |
| Private WSS | `wss://arbitrum-sepolia-rpc.blockreq.com/v1/rpc/BRQ1P0000000000000000000000000000000000000000000000000000000` |

These URLs use the product path `/v1/rpc` plus `/public` or your API key. See [Request Counting](https://blockreq.com/docs/pricing/request-counting/index.md) for how each method counts.

## Methods

| Method | Description |
| --- | --- |
| [`debug_traceBlockByNumber`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/debug_traceBlockByNumber/index.md) | Returns traces for all transactions in a block |
| [`debug_traceCall`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/debug_traceCall/index.md) | Traces a call without submitting a transaction |
| [`debug_traceTransaction`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/debug_traceTransaction/index.md) | Returns the detailed trace of a transaction execution |
| [`eth_blockNumber`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_blockNumber/index.md) | Returns the latest block number |
| [`eth_call`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_call/index.md) | Executes a new message call without creating a transaction |
| [`eth_chainId`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_chainId/index.md) | Returns the chain ID of the current network |
| [`eth_estimateGas`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_estimateGas/index.md) | Estimates gas needed for a transaction |
| [`eth_feeHistory`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_feeHistory/index.md) | Returns base fee per gas and effective priority fee history |
| [`eth_gasPrice`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_gasPrice/index.md) | Returns the current gas price in wei |
| [`eth_getBalance`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getBalance/index.md) | Returns the balance of an account |
| [`eth_getBlockByHash`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getBlockByHash/index.md) | Returns information about a block by hash |
| [`eth_getBlockByNumber`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getBlockByNumber/index.md) | Returns information about a block by block number |
| [`eth_getBlockReceipts`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getBlockReceipts/index.md) | Returns all transaction receipts in a block |
| [`eth_getBlockTransactionCountByHash`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getBlockTransactionCountByHash/index.md) | Returns the number of transactions in a block by hash |
| [`eth_getBlockTransactionCountByNumber`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getBlockTransactionCountByNumber/index.md) | Returns the number of transactions in a block by number |
| [`eth_getCode`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getCode/index.md) | Returns the code at a given address |
| [`eth_getFilterChanges`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getFilterChanges/index.md) | Polls for changes since last call |
| [`eth_getFilterLogs`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getFilterLogs/index.md) | Returns all logs for a filter |
| [`eth_getLogs`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getLogs/index.md) | Returns logs matching a filter |
| [`eth_getProof`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getProof/index.md) | Returns account and storage Merkle proofs for an address at a block |
| [`eth_getStorageAt`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getStorageAt/index.md) | Returns the value from a contract storage slot |
| [`eth_getTransactionByBlockHashAndIndex`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getTransactionByBlockHashAndIndex/index.md) | Returns transaction by block hash and index |
| [`eth_getTransactionByBlockNumberAndIndex`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getTransactionByBlockNumberAndIndex/index.md) | Returns transaction by block number and index |
| [`eth_getTransactionByHash`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getTransactionByHash/index.md) | Returns transaction details by hash |
| [`eth_getTransactionCount`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getTransactionCount/index.md) | Returns the number of transactions sent from an address (nonce) |
| [`eth_getTransactionReceipt`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_getTransactionReceipt/index.md) | Returns the receipt of a transaction by hash |
| [`eth_maxPriorityFeePerGas`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_maxPriorityFeePerGas/index.md) | Returns a suggestion for a priority fee (tip) |
| [`eth_newBlockFilter`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_newBlockFilter/index.md) | Creates a filter for new blocks |
| [`eth_newFilter`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_newFilter/index.md) | Creates a new log filter |
| [`eth_newPendingTransactionFilter`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_newPendingTransactionFilter/index.md) | Creates a filter for pending transactions |
| [`eth_sendRawTransaction`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_sendRawTransaction/index.md) | Submits a pre-signed transaction for broadcast |
| [`eth_subscribe`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_subscribe/index.md) | Subscribes to EVM events over WebSocket |
| [`eth_uninstallFilter`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_uninstallFilter/index.md) | Uninstalls a filter |
| [`eth_unsubscribe`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/eth_unsubscribe/index.md) | Unsubscribe from a previously created subscription |
| [`net_listening`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/net_listening/index.md) | Returns `true` if the client is actively listening for network connections |
| [`net_peerCount`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/net_peerCount/index.md) | Returns the number of peers currently connected to the client |
| [`net_version`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/net_version/index.md) | Returns the current network ID as a string |
| [`trace_block`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/trace_block/index.md) | Returns all traces for a block (Erigon format) |
| [`trace_filter`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/trace_filter/index.md) | Returns traces matching block and address filters |
| [`trace_transaction`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/trace_transaction/index.md) | Returns trace for a single transaction (Erigon format) |
| [`web3_clientVersion`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/web3_clientVersion/index.md) | Returns the client software version |
| [`web3_sha3`](https://blockreq.com/docs/build/api-reference/arbitrum-sepolia/web3_sha3/index.md) | Returns the Keccak-256 hash of the given data |