How to get the events for a contract

Prerequisites

Before getting started, make sure you have the following ready:

• Node v.14+ or Python
• NPM/Yarn or Pip

Step 1: Setup Moralis

First register your Moralis account and get your Moralis API Key.

Once you have your Moralis API Key, install the Moralis SDK in your project.

npm

npm install moralis @moralisweb3/common-evm-utils

yarn

yarn add moralis @moralisweb3/common-evm-utils

pnpm

pnpm add moralis @moralisweb3/common-evm-utils

pip

pip install moralis

Step 2: Get events by contract

In order to get the events for a contract, Moralis provides you a getContractEvents endpoint to do so.

Here you'll need four parameters: address, chain, topic, and abi.

Once you have obtained both the address, chain, topic, and abi, you can copy the following code:

index.js (JavaScript)

const Moralis = require("moralis").default;
const { EvmChain } = require("@moralisweb3/common-evm-utils");

const runApp = async () => {
  await Moralis.start({
    apiKey: "YOUR_API_KEY",
    // ...and any other configuration
  });

  const address = "0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984";

  const chain = EvmChain.ETHEREUM;

  const topic =
    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef";

  const abi = {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        internalType: "address",
        name: "from",
        type: "address",
      },
      { indexed: true, internalType: "address", name: "to", type: "address" },
      {
        indexed: false,
        internalType: "uint256",
        name: "amount",
        type: "uint256",
      },
    ],
    name: "Transfer",
    type: "event",
  };

  const response = await Moralis.EvmApi.events.getContractEvents({
    address,
    chain,
    topic,
    abi,
  });

  console.log(response.toJSON());
};

runApp();

index.ts (TypeScript)

import Moralis from "moralis";
import { EvmChain } from "@moralisweb3/common-evm-utils";

const runApp = async () => {
  await Moralis.start({
    apiKey: "YOUR_API_KEY",
    // ...and any other configuration
  });

  const address = "0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984";

  const chain = EvmChain.ETHEREUM;

  const topic =
    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef";

  const abi = {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        internalType: "address",
        name: "from",
        type: "address",
      },
      { indexed: true, internalType: "address", name: "to", type: "address" },
      {
        indexed: false,
        internalType: "uint256",
        name: "amount",
        type: "uint256",
      },
    ],
    name: "Transfer",
    type: "event",
  };

  const response = await Moralis.EvmApi.events.getContractEvents({
    address,
    chain,
    topic,
    abi,
  });

  console.log(response.toJSON());
};

runApp();

index.py (Python)

from moralis import evm_api

api_key = "YOUR_API_KEY"
params = {
  "address": "0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984",
  "chain": "eth",
  "topic": "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
  "abi": {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "from",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "to",
        "type": "address"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "Transfer",
    "type": "event"
  }
}

result = evm_api.events.get_contract_logs(
    api_key=api_key,
    params=params,
)

print(result)

Step 3: Run the script

To run the script, enter the following command:

Shell (JavaScript)

node index.js

Shell (TypeScript)

ts-node index.ts

Shell (Python)

python index.py

In your terminal, you should see the following JSON response:

{
  "total": 3872827,
  "page": 0,
  "page_size": 100,
  "result": [
    {
      "transaction_hash": "0xced1507250bf1ca24f364c0469c4b636238a39d611c1c6604a445465e4d5180d",
      "address": "0x1f9840a85d5af5bf1d1762f925bdaddc4201f984",
      "block_timestamp": "2023-01-17T03:40:23.000Z",
      "block_number": "16423886",
      "block_hash": "0x0d02e216160ebaf717ab27463208556be1da8d88ac87551f6835c7c2eb802e51",
      "data": {
        "from": "0x33ddd548fe3a082d753e5fe721a26e1ab43e3598",
        "to": "0xdc685e9b6a410ddb832666e2f7dd99ed6f01d1c8",
        "amount": "1000000000000000000"
      }
    },
    {
      "transaction_hash": "0x71347fcdf4f8d02d0d33b74bf843c2b25706260263e83d23003a3fe7b4072e7a",
      "address": "0x1f9840a85d5af5bf1d1762f925bdaddc4201f984",
      "block_timestamp": "2023-01-17T03:40:23.000Z",
      "block_number": "16423886",
      "block_hash": "0x0d02e216160ebaf717ab27463208556be1da8d88ac87551f6835c7c2eb802e51",
      "data": {
        "from": "0xe822446bbc57a5b9e5503ff03f74f37727b97eb2",
        "to": "0x1d42064fc4beb5f8aaf85f4617ae8b3b5b8bd801",
        "amount": "13662108510360931896332"
      }
    },
    {
      "transaction_hash": "0x4d0d06c708ceea8727bf841429fc854b1698914ab281e44c02c002a94ed1e986",
      "address": "0x1f9840a85d5af5bf1d1762f925bdaddc4201f984",
      "block_timestamp": "2023-01-17T03:39:59.000Z",
      "block_number": "16423884",
      "block_hash": "0x483fbab9a3517cf75804d867d6de6e33bc408aff5f4571c3d698141505e6943f",
      "data": {
        "from": "0x5f65f7b609678448494de4c87521cdf6cef1e932",
        "to": "0xd25404fa6e47c81ed9a5dc6588715040678d72f8",
        "amount": "12446301797964504131"
      }
    }
  ]
}

Congratulations 🥳 You just got the events for a contract address with just a few lines of code using the Moralis Events API!

API Reference

• getContractEvents

Support

If you face any trouble following the tutorial, feel free to reach out to our community engineers in our Discord or Forum to get 24/7 developer support.