Base URLs

The base URLs you must use for your API calls to the sandbox and production environments are unique to you.

• https://{prefix}.api.sandbox.checkout.com/{path}
• https://{prefix}.api.checkout.com/{path}
• https://{prefix}.access.sandbox.checkout.com/{path}
• https://{prefix}.access.checkout.com/{path}

The unique API endpoint host names resolve to Checkout.com's IP addresses. Do not allowlist these IP addresses. The {prefix} value in each base URL is a string containing the first eight characters of each of your environments' unique client_id, excluding the cli_ prefix. To find your unique base URL:

1. Sign in to the Dashboard environment you want to retrieve the base URL for:

   • Sandbox
   • Production

2. Go to Developers > Overview.
   Your unique base URL is displayed on the Developer overview page. For example, https://vkuhvk4v.api.checkout.com.

3. Alternatively, go to Settings > Account details.
   Your unique base URL is displayed under Connection settings.

If you are unsure of your client ID or base URL for either environment, contact your account manager or request support. For more information, see API endpoints.