Caido is a web security toolkit designed by hackers for hackers, offering a comprehensive suite of features tailored to penetration testers, bug bounty hunters, and security professionals. Developed by a small team with guidance from experts like Ben Sadeghipour and Justin Gardner, Caido facilitates the identification of web application vulnerabilities through its intuitive interface and customizable extensions in familiar languages like HTML, CSS, and JavaScript. It functions as a proxy server, allowing users to intercept, modify, and automate HTTP requests and responses, essentially enabling them to manipulate web traffic to uncover security flaws. The platform is budget-friendly, offering a free tier with unlimited installations and additional premium features, such as an AI-powered assistant, for subscribers. Caido also supports community-driven development, enabling users to share and download extensions and plugins, enhancing its capabilities. Its design aims to make security testing accessible and efficient, accommodating both seasoned professionals and beginners, with educational support for students pursuing higher education.