> For the complete documentation index, see [llms.txt](https://docs.tuum.tech/hedera-wallet-snap/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tuum.tech/hedera-wallet-snap/hedera-wallet-snap/snap-rpc-apis/basic-apis/hello.md).

# hello

## How to call the API from an app

```tsx
const snapId = `npm:@hashgraph/hedera-wallet-snap`

const handleHelloAPI = async () => {
  await window.ethereum.request({
    method: 'wallet_invokeSnap',
    params: {
      snapId,
      request: {
        method: 'hello',
        params: {
          network: 'testnet',
          mirrorNodeUrl: 'https://testnet.mirrornode.hedera.com'
        }
      }
    }
  })
}
```

{% hint style="info" %}
Note that you do not need to pass in "mirrorNodeUrl" but if you do, the snap will use that URL instead of the default public Hedera mirror nodes which may have rate limits associated with it.
{% endhint %}

## What the API does

1. Retrieves the currently connected account the user has selected on Metamask. If it's the first time, a new [snap account](/hedera-wallet-snap/hedera-wallet-snap/snap-account.md) is created and the account info is saved in snap state.
2. Displays an alert dialog blox on Metamask with some content.

<figure><img src="/files/towiZfyTBt0qST1tAGgw" alt=""><figcaption></figcaption></figure>

Some example responses:

For a hedera account id `0.0.3581604`:

```json
 {
    "currentAccount": {
        "metamaskEvmAddress": "0x0b3628d1b838993b5fceec8b2a26502e7a8e5241",
        "externalEvmAddress": "",
        "hederaAccountId": "0.0.3581604",
        "hederaEvmAddress": "0xca53f9c93d30e0b7212d67901e5a24fb090d542b",
        "publicKey": "0x0206022cea4c6dd6d2e7263b8802253971de922f5380661d97cba82dee66f57ad6",
        "balance": {
            "hbars": 5.67332072,
            "timestamp": "Wed, 13 Mar 2024 20:37:05 GMT",
            "tokens": {
                "0.0.3590430": {
                    "balance": 1,
                    "decimals": 1,
                    "tokenId": "0.0.3590430",
                    "name": "Token1",
                    "symbol": "KP1",
                    "tokenType": "FUNGIBLE_COMMON",
                    "supplyType": "INFINITE",
                    "totalSupply": "100",
                    "maxSupply": "0"
                }
            }
        },
        "network": "testnet",
        "mirrorNodeUrl": "https://testnet.mirrornode.hedera.com"
    }
}
```

{% hint style="info" %}
Note that if you're connecting to the snap using MetaMask wallet(default option), `metamaskEvmAddress` will show your metamask wallet address and if you're connecting to the snap using an external account(importing using private key directly),`externalEvmAddress` will be empty.
{% endhint %}

{% hint style="info" %}
Note that if you're connecting to the snap using MetaMask wallet(default option), the `metamaskEvmAddress` and`hederaEvmAddress`will be different. This is because Hedera Wallet Snap creates a snap internal wallet as the snap has no direct access to the MetaMask wallet's private key.&#x20;

Conversely, if you're connecting to the snap using an external account(importing using private key directly), `externalEvmAddress` and`hederaEvmAddress`will be the same. This is because Hedera Wallet Snap has access to the private key of the external account so there is no need to create a snap internal wallet.
{% endhint %}

## Live Demo on CodePen

{% embed url="<https://codepen.io/kpachhai/pen/poGPRmw>" %}

{% hint style="info" %}

* **Note**: Visit <https://pulse.tuum.tech/> to activate your hedera account before you interact with the demo
* If you're getting any errors with the live demo, make sure you go through the [FAQs](/hedera-wallet-snap/basics/faqs.md) section to learn about what you may be missing. You need to install [Metamask](https://metamask.io/) in your browser for the live demo to work.&#x20;
* To ease the integration of Hedera Wallet Snap on an application, we have created a template web application that you can run locally and check out the code in its entirety to learn how you can integrate and interact with various APIs exposed by Hedera Wallet Snap. Check out the full source code at [template application github repository](https://github.com/hashgraph/hedera-metamask-snaps/tree/main/packages/hedera-wallet-snap/packages/site).
* You can also check out the [API reference](/hedera-wallet-snap/hedera-wallet-snap/snap-rpc-apis.md) to learn how each API works.
  {% endhint %}


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