> ## 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

> Set up your sandbox account and start integrating with the FX API

<Info>
  **Start with the sandbox.** We recommend setting up a sandbox account first so you can test the full integration flow — KYC, bank accounts, quotes, and orders — without using real money or personal data.
</Info>

## 1. Create a Sandbox Account

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

Complete KYC and bank account setup using fake data — no real personal information is required.

The sandbox connects to testnets for all supported blockchains:

* **Stellar**: Testnet
* **Solana**: Devnet
* **Other supported chains**: Testnet

This allows you to test the complete onramp, offramp, and swap flows without real money or tokens.

## 2. Get a Sandbox API Key

Navigate to the [Sandbox API Keys](https://devnet.etherfuse.com/ramp/manage-api) page, found under "Ramp" → "API Keys" in the sidebar.

Any admin on the account can create sandbox API keys immediately — no approval process required.

## 3. Sandbox API URL

All sandbox API requests should be made to:

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

Use the same endpoints and authentication as production, just with this base URL.

## 4. Authentication

Include your API key in the `Authorization` header of every request:

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

<Warning>
  **Do not use a `Bearer` prefix.** The header value should be the API key directly, not `Bearer your-api-key-here`.
</Warning>

## Going to Production

Once you've tested your integration in sandbox, switch to production:

* **Production account:** [app.etherfuse.com](https://app.etherfuse.com/account/ramping) (requires real KYC)
* **Production API keys:** [app.etherfuse.com/ramp/manage-api](https://app.etherfuse.com/ramp/manage-api) (may require approval)
* **Production API URL:** `https://api.etherfuse.com`

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