const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    query: 'What is photosynthesis?',
    topK: 5,
    materialIds: ['<string>'],
    folderIds: ['<string>']
  })
};

fetch('https://studyfetchapi.com/api/v1/materials/search', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "query": "<string>",
  "results": [
    {
      "score": 123,
      "text": "<string>",
      "chunkIndex": 123,
      "material": {
        "id": "<string>",
        "name": "<string>",
        "contentType": "<string>"
      }
    }
  ],
  "totalResults": 123,
  "filtered": true,
  "scope": {
    "materialIds": [
      "<string>"
    ],
    "folderIds": [
      "<string>"
    ]
  }
}