swagger.yml

openapi: '3.0.2'
info:
  title: API service for managing budget and expenses app
  version: '1.0'
servers:
  - url: http://localhost:8000

paths:
   /example:
     post:
       summary: An example of a post request.
       parameters:
         - in: header
           name: X-API-Key
           schema:
             type: string
           required: true
           description: API key for authentication.
       requestBody:
         required: true
         content:
           application/json:
             schema:
               type: object
               properties:
                 example:
                   type: string
                   example: 'example'
       responses:
         '200':
           description: Successfully created a new event.
         '400':
           description: Bad request. Invalid input data.
           content:
             application/json:
               schema:
                 type: object
                 properties:
                   error:
                     type: string
                     example: Invalid input data.