Open-source CLI tool for code generation that actually runs. Multi-stage quality validation ensures generated code meets external contracts.

Key results (benchmark vs Claude Code & Aider, same LLM): - Execution accuracy: 100% (vs Aider 87.5%) - Lint errors/100 lines: 0.0 (vs Claude Code 4.79)

Install: pipx install cognix GitHub: https://github.com/cognix-dev/cognix