> For the complete documentation index, see [llms.txt](https://docs.payment.perfin.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payment.perfin.vn/user-guide/bat-dau.md).

# Bắt đầu

## Application:

Tạo application và ApiKey