const options = {
  method: 'POST',
  headers: {'X-Browser-Use-API-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({bot_token: '<string>'})
};

fetch('https://api.browser-use.com/api/v3/boxes/me/tg', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "installed": true,
  "bot_username": "<string>",
  "deeplink": "<string>",
  "setup_token": "<string>"
}