> For the complete documentation index, see [llms.txt](https://docs.fonbnk.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fonbnk.com/widget-integration/getting-started.md).

# Getting started

### 1. Register

{% hint style="info" %}
Start in sandbox. It behaves the same but moves no real money.
{% endhint %}

| Environment | URL                                          |
| ----------- | -------------------------------------------- |
| Sandbox     | <https://sandbox-dashboard.fonbnk.com/login> |
| Production  | <https://dashboard.fonbnk.com/>              |

Sandbox and production accounts are separate. Register in both when you are ready to go live.

### 2. Get your widget credentials

Go to **Navigation → Integration**. Two things configure the widget:

* <mark style="color:yellow;">**Source**</mark> — the value you pass as the `source` URL parameter, which matches orders to your account.
* A <mark style="color:yellow;">**URL signature secret**</mark> — the key you sign the `signature` JWT with. You create it there, and you can rotate it; it is not a fixed value to copy once. Keep it server-side.

### 3. Set your webhook URL

Go to **Navigation → Webhooks → Settings** and set the URL to receive order updates at.

{% hint style="info" %}
A URL from <https://webhook.site/> is enough to see the payloads while you are building.
{% endhint %}

### 4. Build a widget URL

| Environment | Widget                                                            |
| ----------- | ----------------------------------------------------------------- |
| Sandbox     | [https://sandbox-pay.fonbnk.com](https://sandbox-pay.fonbnk.com/) |
| Production  | [https://pay.fonbnk.com](https://pay.fonbnk.com/)                 |

The root path opens the buy (on-ramp) flow; `/offramp` opens sell.

Next: [Signing the URL](/widget-integration/signing-the-url.md), then [URL params](/widget-integration/url-params.md) for everything you can configure. [Integration examples](/widget-integration/integration-examples.md) has three complete URLs to copy, and [Skipping screens](/widget-integration/skipping-screens.md) shows how to shorten the journey.

If your users arrive from inside a wallet app or a crypto browser, see [Native wallet integration](/widget-integration/native-wallet-integration.md) — we can brand the connect step for your environment.

{% hint style="warning" %}
In production, `source`, `signature`, `address` and `freezeWallet` need a verified merchant account. Contact us to start KYB before you plan a launch around them.
{% endhint %}


---

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