eth_getFilterLogs - Scroll

Example code for the eth_getFilterLogs JSON-RPC method. Complete guide on how to use eth_getFilterLogs JSON-RPC in GetBlock Web3 documentation.

This method returns all logs matching a previously created log filter, regardless of when they were last polled. It is used to backfill the full history of a filter.

Parameters

Parameter	Type	Required	Description
filterId	string	Yes	Filter ID returned by eth_newFilter

Request

cURL

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_getFilterLogs",
    "params": ["0x1a4b0d21f8e0c3b6d2a9f7e4c1b8a5d2"],
    "id": "getblock.io"
}'

Axios

example.js

const axios = require('axios');

const response = await axios.post('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/', {
    jsonrpc: '2.0',
    method: 'eth_getFilterLogs',
    params: ['0x1a4b0d21f8e0c3b6d2a9f7e4c1b8a5d2'],
    id: 'getblock.io'
}, {
    headers: { 'Content-Type': 'application/json' }
});

console.log(response.data.result);

Request

example.py

import requests

response = requests.post(
    'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/',
    headers={'Content-Type': 'application/json'},
    json={
        'jsonrpc': '2.0',
        'method': 'eth_getFilterLogs',
        'params': ['0x1a4b0d21f8e0c3b6d2a9f7e4c1b8a5d2'],
        'id': 'getblock.io'
    }
)

print(response.json())

Rust

example.rs

use reqwest::Client;
use serde_json::{json, Value};

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

    let response = client
        .post("https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&json!({
            "jsonrpc": "2.0",
            "method": "eth_getFilterLogs",
            "params": ["0x1a4b0d21f8e0c3b6d2a9f7e4c1b8a5d2"],
            "id": "getblock.io"
        }))
        .send()
        .await?
        .json::<Value>()
        .await?;

    println!("Result: {}", response["result"]);
    Ok(())
}

Response

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": [
        {
            "address": "0x4200000000000000000000000000000000000006",
            "blockNumber": "0x14b8a10",
            "transactionHash": "0x3c8a1f5b2d9e4076c1a8b3d5e7f9021436587a9cbdef012345678abcdef901234",
            "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
            ],
            "data": "0x"
        }
    ]
}

Response Parameters

Parameter	Type	Description
jsonrpc	string	JSON-RPC protocol version ("2.0")
id	string	Request identifier matching the request
result	array	All logs matching the filter over its block range

Use Cases

• History Backfill: Load all matching logs for a filter's range at once

• Re-Sync: Rebuild an event index after a restart

• Audit Queries: Pull the complete event set for a contract range

• Verification: Cross-check incremental polling against the full log set

Error Handling

Error Code	Message	Description
-32602	Invalid params	Malformed filter ID
-32000	Filter not found	The filter expired or was never created

Web3 Integration

Ethers.js

ethers-example.js

import { ethers } from 'ethers';

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

const logs = await provider.getLogs({ address: '0x4200000000000000000000000000000000000006', topics: ['0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'] });

Viem

viem-example.js

import { createPublicClient, http } from 'viem';

const client = createPublicClient({
  transport: http('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/')
});

const logs = await client.getFilterLogs({ filter });