# Backend (SDK / API)

Backend integration intro here...

## Sample code

{% tabs %}
{% tab title="Typescript" %}

```typescript
import { Xumm } from "xumm";

const xumm = new Xumm("some-api-key", "some-secret-key");

(async () => {
  console.log("pong", await xumm.ping());

  const transaction = { TransactionType: 'SignIn' };
  console.log("payload", await xumm.payload?.create(transaction)) 
})()
```

{% endtab %}

{% tab title="Javascript (nodejs)" %}

```javascript
const { Xumm } = require('xumm')

const xumm = new Xumm('apikey', 'apisecret')

xumm.ping().then(pong => console.log(pong))

const transaction = { TransactionType: "SignIn" }
xumm.payload?.create(transaction).then(payload => console.log(payload))
```

{% endtab %}
{% endtabs %}