LeetCode is primarily an interview-preparation platform rather than a job-search or auto-apply tool. It provides a large collection of programming problems covering algorithms, data structures, databases, system design, and other technical subjects commonly used in software engineering interviews. Users can solve problems online, submit code for automated evaluation, study official solutions, and practice according to specific technical skills. Its Premium subscription adds access to exclusive questions and articles, company-specific problem filtering, premium Explore content, and mock-interview practice targeted toward particular companies. These features make it especially useful for candidates preparing for technical hiring processes at major technology companies. For your directory, I would categorize LeetCode as AI Job Seeking → Interview Preparation rather than as an AI job application tool. It is a strong and active platform, but its primary purpose is helping candidates improve their technical interview performance rather than finding and applying to jobs.