# eth\_getLogs - Monad

This method returns an array of all logs matching a given filter object.

## Parameters

| Parameter        | Type         | Required | Description                                                               |
| ---------------- | ------------ | -------- | ------------------------------------------------------------------------- |
| filter           | object       | Yes      | The filter options.                                                       |
| filter.fromBlock | string       | No       | Start block (hex or tag). Default: "latest".                              |
| filter.toBlock   | string       | No       | End block (hex or tag). Default: "latest".                                |
| filter.address   | string/array | No       | Contract address or list of addresses.                                    |
| filter.topics    | array        | No       | Array of 32-byte topic filters.                                           |
| filter.blockHash | string       | No       | Restricts logs to a single block (cannot be used with fromBlock/toBlock). |

## Request

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

```bash
curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [{
        "fromBlock": "0x1",
        "toBlock": "0xa",
        "address": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
        "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]
    }],
    "id": "getblock.io"
}'
```

{% endcode %}
{% endtab %}

{% tab title="Axios" %}
{% code overflow="wrap" %}

```javascript
import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [{
        "fromBlock": "0x1",
        "toBlock": "0xa",
        "address": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
        "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]
    }],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

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

{% endcode %}
{% endtab %}

{% tab title="Request" %}
{% code overflow="wrap" %}

```python
import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [{
        "fromBlock": "0x1",
        "toBlock": "0xa",
        "address": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
        "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]
    }],
    "id": "getblock.io"
})

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

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

{% endcode %}
{% endtab %}

{% tab title="Rust" %}
{% code overflow="wrap" %}

```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://go.getblock.io/<ACCESS-TOKEN>/")
        .header(header::CONTENT_TYPE, "application/json")
        .body(r#"{
            "jsonrpc": "2.0",
            "method": "eth_getLogs",
            "params": [{
                "fromBlock": "0x1",
                "toBlock": "0xa",
                "address": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
                "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]
            }],
            "id": "getblock.io"
        }"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}
```

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

## Response

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

```json
{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": [
        {
            "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                "0x000000000000000000000000742d35cc6634c0532925a3b844bc9e7595f0beb",
                "0x0000000000000000000000004bbeeb066ed09b7aed07bf39eee0460dfa261520"
            ],
            "data": "0x0000000000000000000000000000000000000000000000000000000005f5e100",
            "blockNumber": "0x5",
            "transactionHash": "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331",
            "transactionIndex": "0x0",
            "blockHash": "0xdc0818cf78f21a8e70579cb46a43643f78291264dda342ae31049421c82d21ae",
            "logIndex": "0x0",
            "removed": false
        }
    ]
}
```

{% endcode %}

## Response Parameters

| Field            | Type    | Description                                          |
| ---------------- | ------- | ---------------------------------------------------- |
| address          | string  | Address from which log originated.                   |
| topics           | array   | Array of 0-4 indexed log topics.                     |
| data             | string  | Non-indexed log data.                                |
| blockNumber      | string  | Block number where log was in (hex).                 |
| transactionHash  | string  | Transaction hash.                                    |
| transactionIndex | string  | Transaction index in the block (hex).                |
| blockHash        | string  | Block hash.                                          |
| logIndex         | string  | Log index in the block (hex).                        |
| removed          | boolean | True if log was removed due to chain reorganization. |

## Use Case

The `eth_getLogs` method is essential for:

* Tracking token transfers (ERC-20, ERC-721)
* Monitoring DeFi protocol events
* Building event-driven applications
* Indexing blockchain data
* Transaction history analysis
* Real-time event notifications

## Error Handling

| Status Code | Error Message      | Cause                                      |
| ----------- | ------------------ | ------------------------------------------ |
| 403         | Forbidden          | Missing or invalid ACCESS-TOKEN.           |
| -32602      | Invalid params     | Invalid filter parameters.                 |
| -32005      | Limit exceeded     | Too many results or block range too large. |
| -32000      | Resource not found | Block not found.                           |

## Web3 Integration

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

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

const provider = new ethers.JsonRpcProvider('https://go.getblock.io/<ACCESS-TOKEN>/');

// ERC-20 Transfer event signature
const transferTopic = ethers.id('Transfer(address,address,uint256)');

const logs = await provider.getLogs({
    fromBlock: 1,
    toBlock: 10,
    address: tokenAddress,
    topics: [transferTopic]
});

logs.forEach(log => {
    console.log('Transfer in block:', log.blockNumber);
});
```

{% endtab %}

{% tab title="Viem" %}

```js
import { createPublicClient, http } from 'viem';
import { monad } from 'viem/chains';

// Create Viem client with GetBlock
const client = createPublicClient({
  chain: monad,
  transport: http("https://go.getblock.us/<ACCESS_TOKEN>"),
});

// Using the method through Viem
async function fetchAccountViem() {
    try {
        // Method-specific Viem implementation
        const result = await client.request({
           method: "eth_getLogs",
           params: [{
            "fromBlock": "0x1",
            "toBlock": "0xa",
            "address": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
            "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]
        }],
        });
        console.log('Result:', result);
        return result;
    } catch (error) {
        console.error('Viem Error:', error);
        throw error;
    }
}
```

{% endtab %}
{% endtabs %}

### Block Range Limit

{% hint style="warning" %}
Important: Monad has a maximum block range of 1000 blocks for `eth_getLogs`.

Due to Monad's high throughput (much larger blocks than Ethereum), we recommend using small block ranges (1-10 blocks) for optimal performance.
{% endhint %}

{% code title="Example: recommended vs not recommended" %}

```javascript
// Recommended: Small block ranges
const logs = await provider.getLogs({
    fromBlock: latestBlock - 10,
    toBlock: latestBlock,
    address: contractAddress
});

// Not recommended: Large ranges may timeout
// fromBlock: 0, toBlock: 'latest' // May fail
```

{% endcode %}

### Performance Tips

{% stepper %}
{% step %}

### Use specific addresses

Always filter by contract address when possible.
{% endstep %}

{% step %}

### Use topics

Filter by event signatures to reduce results.
{% endstep %}

{% step %}

### Paginate

For large queries, break into smaller block ranges.
{% endstep %}

{% step %}

### Use blockHash

When querying a single block, use the `blockHash` parameter.
{% endstep %}
{% endstepper %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.getblock.io/api-reference/monad-mon/eth_getlogs-monad.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.