How to connect a qiwi store on an unfinished project?

Question

PHP

Greetings, the project is still under development and is on a subdomain, I want to deal with the qiwi REST API while the project has not yet been launched (in my opinion it is logical), but as I understand it, only ready-made services are connected in kiwi. Give advice

Answer 1

1) Request a test server, they 100% have it.
2) Look for open source modules for integration with qiwi and figure out how they work.