StyleX DevTools is a Chrome extension designed to streamline the inspection and editing of atomic styles in web development. This tool enhances the traditional Elements panel by introducing a custom 'Styles' panel that organizes styles based on their properties rather than selectors. This approach allows developers to efficiently manage and edit styles without the risk of unintended global changes, making it particularly useful for atomic CSS methodologies. It also suggests existing styles, enabling quick className swaps, and allows for inline styling when new styles are introduced.

In addition to its general features, StyleX DevTools offers unique capabilities tailored for StyleX users. It can detect `data-style-src` attributes, providing insights into style sources during development. With a single click, users can access the relevant JavaScript or TypeScript files, and observe the order in which style objects are applied. This combination of features makes StyleX DevTools a valuable asset for developers working with atomic styles.