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How to get decoded events with abi

Prerequisites​

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

  • Node v.14+
  • NPM

Step 1: Setup Blocklens​

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

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

npm i blocklens-sdk

Step 2: Get decoded events with abi​

In order to get decoded events with abi, Blocklens provides you a decodeEventWithAbi endpoint to do so.

Here you'll need a parameter: transaction_hash.

Once you've obtained the transaction_hash, you can copy the following code:

import Blocklens from "blocklens-sdk";

const blocklens = new Blocklens();
blocklens.init({ apiKey: "YOUR_API_KEY" });

const runApis = async () => {
  const response = await blocklens.ETH_MAINNET.decodeEventWithAbi(
    "0x3d6122660cc824376f11ee842f83addc3525e2dd6756b9bcf0affa6aa88cf741",
    {
      abi: [
        {
          encode_signature:
            "MHg4YzdhMDA1ZDBjMDNiNmM2OTZkNDZlYmM4YTZlYTFhNGViZjc1OTMxNTRjY2MzMGU5OGI3Mzg4ZWI3YTQ0M2E4",
          signature:
            "0x8c7a005d0c03b6c696d46ebc8a6ea1a4ebf7593154ccc30e98b7388eb7a443a8",
        },
      ],
    }
  );
  console.log(response);
};

runApis();

Step 3: Run the script​

ts-node index.ts

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

[
  {
    "tx_hash": "0x8c7a005d0c03b6c696d46ebc8a6ea1a4ebf7593154ccc30e98b7388eb7a443a8",
    "contract_address": "0x0000000000000000000000000000000000001003",
    "block_number": 1,
    "timestamp": 1661314004,
    "block_time": "1970-01-19T12:04:31.492Z",
    "signature": "0x8c7a005d0c03b6c696d46ebc8a6ea1a4ebf7593154ccc30e98b7388eb7a443a8",
    "index": "0",
    "data_decoded": "0",
    "event_name": "0"
  }
]

Congratulations 🥳 you just found the get decoded events with abi on multiple chains with only a few lines of code using the Blocklens Wallet API!

API Reference​

If you want to know more details on the endpoint and optional parameters, check out:

Support​

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