Show HN: GhostUser – AI personas that find UX bugs by walking your app (github.com)

GhostUser has been launched as a revolutionary tool that uses AI personas to identify user experience (UX) issues in apps before they are tested by real users. This open-source solution alleviates the burden on developers and designers who often miss out on usability concerns due to familiarity with their own products. The tool features five distinct personas, each with unique perspectives, who navigate through an app, highlighting areas of confusion and identifying broken features like console errors and HTTP failures. This approach is a cost-effective alternative to traditional user testing, which can be prohibitively expensive. Significantly, GhostUser enables rapid feedback during the development cycle, integrating seamlessly with platforms like Figma and various development environments. Users provide their Anthropic API key to run tests, receiving detailed reports on both UX bugs and technical flaws. With the ability to create customized personas and specify testing criteria, this tool is versatile for diverse project needs while maintaining privacy as user keys are stored locally. Overall, GhostUser marks a substantial advancement in how AI can improve product usability and quality assurance, making UX testing more accessible and efficient for developers and designers alike.