Show HN: Coding agent skills, tested on 15 backend tasks with hidden checks (github.com)

In a recent demonstration, coding agents Claude Code, Codex, and Cursor were tested on their ability to handle 15 backend tasks while implementing specialized skills for secure coding practices. These skills ensure that agents behave like senior engineers, protecting against critical issues during operations such as authentication, data handling, and schema migrations. The agents completed the tasks with a hidden check which introduced complex scenarios like simultaneous transactions and version conflicts. Results showed a dramatic reduction in mistakes; agents without the skills made 25 critical errors out of 150 attempts, whereas those with skills only made 2 errors. This significant improvement underscores the potential of specialized skills in enhancing the performance and reliability of AI coding agents. By implementing features like API endpoint management, data integrity checks, and efficient database migrations, these agents can better navigate complex backend tasks. The study illustrates how integrating safety protocols directly into the coding process allows for more robust and error-resistant applications, positioning AI solutions as viable tools in software development. Developers are encouraged to customize these skills according to their specific project requirements, further increasing the adaptability of AI in technical environments.