Sphinx: Developer tool that checks AI code before deployment

Sphinx is a free open-source Git hook that quizzes users about AI code functionality before shipping to prevent production errors.

Sphinx is a free open-source Git hook for agent-assisted development that quizzes users about code functionality before shipping. It prevents production errors and double-charging in Stripe by saving event IDs, requiring Node 22.19+ and supporting macOS, Linux, or WSL. In a demonstrated example, it handled 11 files with +5,012 additions and -3,147 deletions. It works with Codex, Claude Code, and other AI tools via OpenRouter or OpenAI-compatible endpoints. Crucially, the source explicitly states it does not reduce costs or expand access for end-users. This tool addresses developer friction in AI deployment but has no direct impact on the cost or availability of basic needs for end users.

The source describes this as a developer tool with no direct impact on end-user costs or access. Its value lies entirely in internal development workflows, not in making AI tools cheaper or more widely accessible to people who need them.

Source: Hacker News