> For the complete documentation index, see [llms.txt](https://pay-apidocs.fizen.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pay-apidocs.fizen.io/getting-started/register.md).

# Register

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You can make requests to Fizen Pay directly on the **Web app** by logged-in account or make external requests (from: e-commerce platforms, your applications/systems...) by **API keys**.
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1. Register an account on Sandbox environment for developing or testing purposes
   * <https://merchant-testmode.fizen.io/signup>
2. Register a production account to launch your business:
   * &#x20;<https://merchant.fizen.io/signup>