<script src="script.js" defer></script>

fetch(

  "https://api.igdb.com/v4/age_rating_content_descriptions",

  { method: 'POST',

    headers: {

      'Accept': 'application/json',

      'Client-ID': 'Client ID',

      'Authorization': 'Bearer access_token',

    },

    body: "fields category,checksum,description;"

})

  .then(response => {

      console.log(response.json());

  })

  .catch(err => {

      console.error(err);

  });