> ## Documentation Index
> Fetch the complete documentation index at: https://docs.moralis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Get Multi-Chain Activity for a Wallet Address

> Learn how to detect which chains a wallet has been active on using the Moralis API.

## Introduction

In this tutorial, you'll learn how to detect which blockchain networks a wallet address has activity on using the Moralis API. This is useful for building multi-chain portfolio views, determining which chains to query for a user's assets, or understanding a wallet's cross-chain behavior. We'll use the following Moralis API endpoint:

* [Get Chain Activity](/data-api/evm/wallet/chain-activity) - Detect which chains a wallet has been active on

## Prerequisites

* Node.js v18+ installed
* A Moralis API key ([get one free](https://admin.moralis.io))

## Step 1: Set Up Your Project

Create a new directory for your project and initialize it:

```bash theme={null}
mkdir get-chain-activity && cd get-chain-activity
npm init -y
```

## Step 2: Create the Script

Create a file called `index.js` and add the following code:

```javascript theme={null}
// index.js
const API_KEY = 'YOUR_API_KEY';
const WALLET_ADDRESS = '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045';

async function getChainActivity() {
  const response = await fetch(
    `https://deep-index.moralis.io/api/v2.2/wallets/${WALLET_ADDRESS}/chains?chains=eth,polygon,bsc,arbitrum,base`,
    {
      headers: {
        'X-API-Key': API_KEY,
      },
    }
  );

  const data = await response.json();
  console.log(JSON.stringify(data, null, 2));
}

getChainActivity();
```

Replace `YOUR_API_KEY` with your actual Moralis API key.

## Step 3: Run the Script

Execute the script to get the chain activity:

```bash theme={null}
node index.js
```

## Example Response

```json theme={null}
{
  "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
  "active_chains": [
    {
      "chain": "eth",
      "chain_id": "0x1",
      "first_transaction": {
        "block_number": "46147",
        "block_timestamp": "2015-08-07T03:30:33.000Z",
        "transaction_hash": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"
      },
      "last_transaction": {
        "block_number": "19234567",
        "block_timestamp": "2024-02-15T10:30:00.000Z",
        "transaction_hash": "0x1ed85b3757a6d31d01a4d6677fc52fd3911d649a0af21d29f3e2c2f10c82e12c"
      }
    },
    {
      "chain": "polygon",
      "chain_id": "0x89",
      "first_transaction": {
        "block_number": "15678900",
        "block_timestamp": "2021-06-15T08:00:00.000Z",
        "transaction_hash": "0x2bc7a8f12345678901234567890abcdef12345678901234567890abcdef1234"
      },
      "last_transaction": {
        "block_number": "52345678",
        "block_timestamp": "2024-02-14T15:45:00.000Z",
        "transaction_hash": "0x3cd8b9e23456789012345678901abcdef23456789012345678901abcdef2345"
      }
    }
  ]
}
```

## Understanding the Response

| Field               | Description                                                   |
| ------------------- | ------------------------------------------------------------- |
| `address`           | The wallet address queried                                    |
| `active_chains`     | Array of chains where the wallet has activity                 |
| `chain`             | Chain identifier (eth, polygon, arbitrum, etc.)               |
| `chain_id`          | Hexadecimal chain ID                                          |
| `first_transaction` | Details of the wallet's first transaction on this chain       |
| `last_transaction`  | Details of the wallet's most recent transaction on this chain |
| `block_number`      | Block number of the transaction                               |
| `block_timestamp`   | When the transaction was mined                                |
| `transaction_hash`  | Hash of the transaction                                       |

## Next Steps

* [Get Wallet History](/data-api/evm/wallet/wallet-history) - Get full transaction history
* [Get Token Balances](/data-api/evm/wallet/token-balances) - Fetch token balances