青い鳥Xからの通知 is a Chrome extension designed to enhance user experience by regularly checking for unread messages in X (formerly Twitter) chat. This tool provides notifications directly through Chrome, ensuring that users never miss important messages. The extension automatically checks the chat at user-defined intervals ranging from one minute to 24 hours, sending notifications only when unread messages are present. Users can click on the notifications to quickly access their chat window.

Additional features include a pop-up display showing unread message counts, the last check time, and the time until the next check. Users can also perform manual checks at any time. The extension respects user privacy by not requiring an official API key, and it does not transmit any data to external servers, relying solely on local storage for settings.