Database setup, handling data fetching and "POST" requests

[Sosek1]

I need some data and posibility to fetch and post data about articles

I'd like to get api key and endpoints for:

• Fetch requests
  After fetching I'd like to get json object that contains:
  - article's title
  - article's subtitle
  - author
  - category (during uploading article author can mark article with let's say #gym if article is about gym, this would let as implement
  some kind of searching or filtering content.)
  - articles content
  - date of upload
  - article's id
• Post requests
• Delete requests
• Patch requests

I'am attaching view of upload articles form so you can imagine what do I need