XPen represents a robust solution tailored to streamline Twitter publishing endeavors. Available as a browser extension for a one-time fee, it focuses on optimizing the scheduling and automatic posting of lengthy tweets directly to Twitter. Distinguished by its ability to seamlessly compose tweet threads, XPen integrates an array of innovative features. These include a built-in AI ghost writer for content creation, AI-generated prompts for thread ideas, an image editor for visual enhancements, and a scheduling system for efficient post planning. Leveraging user-provided Twitter API and OpenAI API keys, XPen empowers users to leverage AI in their posts without recurring monthly fees.