> 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/environment.md).

# Environment

* **Sandbox**: 
  * Web app: <https://merchant-testmode.fizen.io>
  * Register page: <https://merchant-testmode.fizen.io/signup>
  * API endpoint: <https://api-sandbox.fizen.io/api/integration/v1>
* **Production**:
  * Web app: <https://merchant.fizen.io>
  * Register page: <https://merchant.fizen.io/signup>
  * API endpoint: <https://pay-api.fizen.io/api/integration/v1>