Obie Fernandez, Ruby on Rails Expert GPT is an AI-assisted tool launched with the aim of providing expert guidance and advice regarding Ruby on Rails, a server-side web application framework. By posing questions or seeking advice through this tool, users can reap the benefits of AI-driven, detailed responses constructed based on vast knowledge on this topic. It functions much like a virtual mentor, providing recommendations for best practices when using Ruby on Rails, giving tips on optimizing one's Rails application, delivering insights on Rails testing, offering advice on Rails scalability, and can even help users review their code architecture. This GPT utility, which works on top of ChatGPT, has also incorporated an element of personality, reflecting the interests of a real-life Rails expert and DJ named Obie Fernandez. As a result, users can enjoy a more engaging and interesting interaction. To note, accessing this tool requires a ChatGPT Plus. To make the most of this GPT, users should sign up and log in, after which they can start the conversation with diverse prompts such as 'How do I optimize my Rails app?' or 'Review my code architecture.' In summary, this GPT brings together the best of AI-driven responses and human-like interaction, geared towards the needs of those interested in Ruby on Rails.