> 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/avalanche-avax/eth_getlogs-avax.md).

# eth\_getLogs - AVAX

Returns C-Chain logs matching a given filter. Filters specify a block range, an address, and indexed topics, enabling efficient retrieval of contract events, such as ERC-20 transfers.

## Parameters

| Parameter    | Type   | Required | Description                                                      |
| ------------ | ------ | -------- | ---------------------------------------------------------------- |
| filterObject | object | Yes      | Filter with optional `fromBlock`, `toBlock`, `address`, `topics` |

## Request Example

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

```bash
curl --location --request POST 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/C/rpc' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [
        {
            "fromBlock": "0x44b8a37",
            "toBlock": "latest",
            "address": "0x9e7c5e3e3a3b8e1aa0e2d4c7f9d4b0c8b8d5f1a2",
            "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
            ]
        }
    ],
    "id": "getblock.io"
}'
```

{% endtab %}

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

```javascript
import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [
        {
            "fromBlock": "0x44b8a37",
            "toBlock": "latest",
            "address": "0x9e7c5e3e3a3b8e1aa0e2d4c7f9d4b0c8b8d5f1a2",
            "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
            ]
        }
    ],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/C/rpc',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data, null, 2)))
    .catch(error => console.log(error));
```

{% endtab %}

{% tab title="Python (Requests)" %}

```python
import requests
import json

url = "https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/C/rpc"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [
        {
            "fromBlock": "0x44b8a37",
            "toBlock": "latest",
            "address": "0x9e7c5e3e3a3b8e1aa0e2d4c7f9d4b0c8b8d5f1a2",
            "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
            ]
        }
    ],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)
```

{% endtab %}

{% tab title="Rust (Reqwest)" %}

```rust
use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let payload = json!({
        "jsonrpc": "2.0",
        "method": "eth_getLogs",
        "params": [
                {
                        "fromBlock": "0x44b8a37",
                        "toBlock": "latest",
                        "address": "0x9e7c5e3e3a3b8e1aa0e2d4c7f9d4b0c8b8d5f1a2",
                        "topics": [
                                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
                        ]
                }
        ],
        "id": "getblock.io"
});

    let response = client
        .post("https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/C/rpc")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);

    Ok(())
}
```

{% endtab %}
{% endtabs %}

## Response Example

{% code overflow="wrap" %}

```json
{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": [
        {
            "address": "0x9e7c5e3e3a3b8e1aa0e2d4c7f9d4b0c8b8d5f1a2",
            "blockHash": "0x4f3a1d6e8c2b9a7e5d3f1c8a4b6e9d2f5a8c3e7b1d4f9a6c2e5b8d3f7a1c4e9b",
            "blockNumber": "0x44b8a3c",
            "data": "0x0000000000000000000000000000000000000000000000056bc75e2d63100000",
            "logIndex": "0x0",
            "removed": false,
            "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
            ],
            "transactionHash": "0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b",
            "transactionIndex": "0x0"
        }
    ]
}
```

{% endcode %}

## Response Parameters

| Field             | Type            | Description                                                         |
| ----------------- | --------------- | ------------------------------------------------------------------- |
| result            | array           | Array of log objects matching the filter                            |
| result\[].address | string          | Contract address that emitted the log                               |
| result\[].topics  | array of string | Indexed event topics; topic 0 is typically the event signature hash |
| result\[].data    | string          | Non-indexed event data (ABI-encoded)                                |

## Use Cases

* Indexing ERC-20 transfers on C-Chain
* Tracking DEX swap events for analytics
* Building real-time event-driven dApps

## Error Handling

| Status Code | Error Message     | Cause                                                                               |
| ----------- | ----------------- | ----------------------------------------------------------------------------------- |
| 404         | Not Found         | Missing or invalid `<ACCESS-TOKEN>`                                                 |
| -32602      | Invalid params    | Request parameters are missing or malformed                                         |
| 429         | Too Many Requests | Rate limit exceeded for your plan                                                   |
| -32005      | Limit exceeded    | Block range or returned result set exceeds the provider's limit; narrow your filter |

## SDK Integration

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

```javascript
import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/C/rpc');

// Most methods are exposed directly on the provider.
// For raw access, use provider.send(method, params).
const result = await provider.send('eth_getLogs', [{"fromBlock": "0x44b8a37", "toBlock": "latest", "address": "0x9e7c5e3e3a3b8e1aa0e2d4c7f9d4b0c8b8d5f1a2", "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]}]);
console.log(result);
```

{% endtab %}

{% tab title="Viem" %}

```javascript
import { createPublicClient, http } from 'viem';
import { avalanche } from 'viem/chains';

const client = createPublicClient({
    chain: avalanche,
    transport: http('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/C/rpc')
});

const result = await client.request({ method: 'eth_getLogs', params: [{"fromBlock": "0x44b8a37", "toBlock": "latest", "address": "0x9e7c5e3e3a3b8e1aa0e2d4c7f9d4b0c8b8d5f1a2", "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]}] });
console.log(result);
```

{% endtab %}
{% endtabs %}