> For the complete documentation index, see [llms.txt](https://docs.getblock.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.getblock.io/api-reference/hyperliquid-hyperevm/eth_gettransactionbyblocknumberandindex-hyperevm.md).

# eth\_getTransactionByBlockNumberAndIndex - HyperEVM

Example code for the eth\_getTransactionByBlockNumberAndIndex JSON RPC method. Сomplete guide on how to use eth\_getTransactionByBlockNumberAndIndex GetBlock JSON RPC in GetBlock Web3 documentation.

This method returns information about a transaction by block number and transaction index position.

## Parameters

| Parameter   | Type   | Required | Description                       |
| ----------- | ------ | -------- | --------------------------------- |
| blockNumber | string | Yes      | Block number (hex) or "latest".   |
| index       | string | Yes      | Transaction index position (hex). |

## Request

{% tabs %}
{% tab title="cURL" %}
{% code title="cURL" %}

```bash
curl --location --request POST 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getTransactionByBlockNumberAndIndex",
    "params": ["latest", "0x0"],
    "id": "getblock.io"
}'
```

{% endcode %}
{% endtab %}

{% tab title="Axios" %}
{% code title="JavaScript (axios)" %}

```javascript
const axios = require('axios');

const response = await axios.post('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/', {
    jsonrpc: '2.0',
    method: 'eth_getTransactionByBlockNumberAndIndex',
    params: ['latest', '0x0'],
    id: 'getblock.io'
});

console.log('Transaction:', response.data.result);
```

{% endcode %}
{% endtab %}

{% tab title="request" %}
{% code title="Python (requests)" %}

```python
import requests

response = requests.post('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/', json={
    'jsonrpc': '2.0',
    'method': 'eth_getTransactionByBlockNumberAndIndex',
    'params': ['latest', '0x0'],
    'id': 'getblock.io'
})

print(f'Transaction: {response.json()["result"]}')
```

{% endcode %}
{% endtab %}

{% tab title="Rust" %}
{% code title="Rust (reqwest)" %}

```rust
use reqwest::header;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::new();
    
    let response = client
        .post("https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/")
        .header(header::CONTENT_TYPE, "application/json")
        .body(r#"{
            "jsonrpc": "2.0",
            "method": "eth_getTransactionByBlockNumberAndIndex",
            "params": ["latest", "0x0"],
            "id": "getblock.io"
        }"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}
```

{% endcode %}
{% endtab %}
{% endtabs %}

## Response

{% code title="Response (JSON)" %}

```json
{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "hash": "0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b",
        "blockNumber": "0x1b4",
        "from": "0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21",
        "to": "0x1234567890123456789012345678901234567890",
        "value": "0xde0b6b3a7640000",
        "transactionIndex": "0x0"
    }
}
```

{% endcode %}

## Response Parameters

| Field            | Type   | Description                  |
| ---------------- | ------ | ---------------------------- |
| hash             | string | Transaction hash.            |
| blockNumber      | string | Block number (hex).          |
| from             | string | Sender address.              |
| to               | string | Recipient address.           |
| value            | string | Value transferred (hex wei). |
| transactionIndex | string | Index in block (hex).        |

## Use Case

The `eth_getTransactionByBlockNumberAndIndex` method is essential for:

* Sequential block transaction processing
* Block indexing systems
* Transaction verification by position
* Iterating through block transactions

## Error Handling

| Error Code | Message        | Cause                          |
| ---------- | -------------- | ------------------------------ |
| -32602     | Invalid params | Invalid block number or index. |
| -32603     | Internal error | Transaction not found.         |

### Web3 Integration

{% tabs %}
{% tab title="Ether.js" %}

```javascript
import { ethers } from "ethers";
const RPC_URL = "https://shared.eu-central-1.getblock.io/<ACCESS_TOKEN>";
const provider = new ethers.JsonRpcProvider(RPC_URL);

async function Call() {
  try {
    // Call the method — this will resolve to a number (promise resolves to number)
    const result = await provider.send("eth_getTransactionByBlockNumberAndIndex",
 ["latest", "0x0"]);
    console.log("The result:", result);
    return result;
  } catch (error) {
    console.error("The error:", error);
    throw error;
  }
}
```

{% endtab %}

{% tab title="Viem" %}

```jsx
import { createPublicClient, http } from "viem";
import { hyperEvm } from "viem/chains";

// Create Viem client with GetBlock
const client = createPublicClient({
  chain: hyperEvm,
  transport: http(import.meta.env.HYPER_ACCESS_TOKEN),
});

// Using the method through Viem
async function Call() {
  try {
    // Method-specific Viem implementation
    const result = await client.request({
     method: "eth_getTransactionByBlockNumberAndIndex",
     params: ["latest", "0x0"],
    });
    return result;
  } catch (error) {
    console.error("Viem Error:", error);
    throw error;
  }
}
```

{% endtab %}
{% endtabs %}