Provide X (formerly Twitter) API Key (also known as Consumer Key) from your Twitter App. Read <a href="https://developer.twitter.com/en/docs/authentication/oauth-1-0a/api-key-and-secret" target="_blank" rel="noopener noreferrer" >document</a>  for more details.
NOTE: X (formerly Twitter) requires users to subscribe and pay a fee to access data from their APIs. See the <a href="https://developer.twitter.com/en/products/twitter-api" target="_blank" rel="noopener noreferrer" >pricing</a> and <a href="https://developer.twitter.com/en/docs/twitter-api/rate-limits" target="_blank" rel="noopener noreferrer" >rate limits</a> for more details.