const options = {
  method: 'POST',
  headers: {'X-Browser-Use-API-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({files: [{name: '<string>', contentType: 'application/octet-stream', size: 2}]})
};

fetch('https://api.browser-use.com/api/v3/sessions/{session_id}/files/upload', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "files": [
    {
      "name": "<string>",
      "uploadUrl": "<string>",
      "path": "<string>"
    }
  ]
}