Plankton Code Quality is a robust enforcement system designed to ensure code consistency and correctness during the development process. By integrating with Claude Code's PostToolUse hooks, it automatically formats code, runs linters, and leverages a tiered model routing system—utilizing Haiku, Sonnet, and Opus—to autonomously fix identified violations. It includes unique defensive mechanisms to prevent AI agents from bypassing quality checks by modifying configuration files, ensuring high-quality, production-ready output across Python, TypeScript, Shell, and several other languages.