const options = {method: 'GET', headers: {'x-api-key': '<api-key>'}};

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

{
  "materials": [
    {
      "_id": "<string>",
      "name": "<string>",
      "organizationId": "<string>",
      "folderId": "<string>",
      "contentType": "text",
      "content": {
        "text": "<string>",
        "url": "<string>",
        "s3Key": "<string>",
        "s3Url": "<string>",
        "filename": "<string>",
        "fileSize": 123,
        "mimeType": "<string>"
      },
      "status": "active",
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z",
      "metadata": {},
      "usage": {},
      "references": [
        {
          "title": "Understanding Photosynthesis",
          "url": "https://example.com/article"
        }
      ]
    }
  ],
  "totalCount": 123,
  "page": 123,
  "totalPages": 123
}