solid-skills: Claude Code Skill Enforces SOLID and TDD on AI-Written Code

An open-source skill set called "solid-skills" has been released to transform "junior-level" code produced by AI coding agents—primarily in TypeScript/NestJS—into more maintainable software grounded in the SOLID principles and test-driven development (TDD). Distributed under the MIT license on GitHub, it had reached roughly 460 stars and 58 forks as of July 1, 2026.