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

# International Exchange Sandbox

## Access

Contact your Coinbase Account Team for onboarding instructions.

## Sandbox URLs

Use the following URLs to test your API connectivity.

| API                   | URL:PORT                                                 |
| --------------------- | :------------------------------------------------------- |
| UI                    | [`https://n5e1.coinbase.com`](https://n5e1.coinbase.com) |
| REST API              | `https://api-n5e1.coinbase.com`                          |
| FIX API - Order Entry | `tcp+ssl://n5e2.coinbase.com:6110`                       |
| FIX API - Market Data | `tcp+ssl://n5e2.coinbase.com:6120`                       |
| FIX API - Drop Copy   | `tcp+ssl://n5e2.coinbase.com:6130`                       |
| WEBSOCKET API         | `wss://ws-md.n5e2.coinbase.com`                          |

## Funding the Account

To fund your sandbox account, contact your Coinbase Account Team.

<Warning>
  * All INTX Sandbox accounts are funded with USDC.
  * You cannot manually fund your account.
  * All transfers, deposits, and withdrawals are disabled.
</Warning>

## Creating API Keys

1. Log in to the INTX sandbox UI: [`https://n5e1.coinbase.com/api-keys`](https://n5e1.coinbase.com/api-keys)
2. Select the **API** tab.
3. Select **Create API Key**.
4. Select:
   * **Portfolios** for which to grant API access.
   * **Permissions** - View, Transfer, Trade.
   * **Passphrase** - Record and secure.
   * **IPs to allowlist** - We allow up to 30 IPs/API Key.
5. Record and secure API Secret, Passphrase, and API Key.

<Info>
  In sandbox and production, each account is limited to a maximum of:

  * **30 Trading API keys**
  * **30 Non-trading API keys**
  * **5 Drop Copy sessions**

  See [Rate Limits](/international-exchange/introduction/rate-limits-overview).
</Info>