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

# Initial Setup

> Create a sandbox business account, get an API key, and make your first call

<Info>
  **Start in the sandbox.** It runs on testnets (Stellar Testnet, Solana Devnet, testnet for every other supported chain), so you can test the full onramp, offramp, and swap flows with fake data and no real money.
</Info>

## 1. Sign up

Go to [sandbox.etherfuse.com](https://sandbox.etherfuse.com) and sign up with your email and password.

## 2. Create a business account

Sign-up gives you a **personal** account, and personal accounts cannot have API keys.

On [Manage Accounts](https://sandbox.etherfuse.com/account/manage) (sidebar: "Account" then "Manage Accounts"), click **Add account**, create a **business** organization, and select it.

## 3. Approve KYB

Creating the business account lands you on [KYB Compliance](https://sandbox.etherfuse.com/account/kyb). You must complete KYB to get API keys.

In sandbox, skip the documents and questionnaires: click **Approve KYB** in the "Ready to approve?" panel at the bottom of that page. It approves the organization without admin review.

## 4. Create an API key

Back on [Manage Accounts](https://sandbox.etherfuse.com/account/manage), create a sandbox API key. Any admin on the business account can create one.

If the page still prompts for KYB instead of showing keys, you are viewing the personal account. Switch to the business account.

## 5. Call the API

Sandbox base URL:

```
https://api.sand.etherfuse.com
```

Pass the key in the `Authorization` header of every request:

```
Authorization: your-api-key-here
```

<Warning>
  **Do not use a `Bearer` prefix.** The header value is the API key by itself.
</Warning>

Endpoints and authentication are identical to production; only the base URL changes.

## Going to Production

* **Account:** [app.etherfuse.com](https://app.etherfuse.com/account/ramping)
* **KYB:** [app.etherfuse.com/compliance](https://app.etherfuse.com/compliance)
* **API keys:** [app.etherfuse.com/account/manage](https://app.etherfuse.com/account/manage)
* **Base URL:** `https://api.etherfuse.com`

Production keys require real KYB. Complete your organization's verification at [app.etherfuse.com/compliance](https://app.etherfuse.com/compliance).

For sandbox testing details (testnet tokens, test KYC data, webhooks), see the [Sandbox Reference](/test-environment).