How to make API for Frontend-a?

Question

API

Comrades, the question is quite trivial and arose in the process of creating an application, where I, as a frontend developer, had to add functionality via RESTfull after layout, but the trouble is, backenders do not have time, they talk about some complex algorithms and all that, but then you need to debug the user interface ...
QUESTION: how, in fact, can a frontend-er write its own temporary API in a quick way for debugging an application, what tools are available for this, so as not to delve into all the charms of the backend, please tell me a silly one?))

Answer 1

headless CMS

Answer 2

You can use the Express.js framework for Node.js, it is very easy to write a small api for the front on it. For a quick start, you can create a skeleton with express-generator