solid · ramziddin — Claude Code skill: what it does, how to install
Enforces TDD workflows, SOLID design, and strict clean code constraints across coding tasks. Useful when designing architecture or refactoring messy codebases.
npx skills add ramziddin/solid-skills --skill solid -a claude-codeWhat solid does
The skill directs your coding agent through a strict test-driven development workflow: write a failing test, create the simplest passing implementation, then refactor. Production code cannot be written without a corresponding failing test. Every function and class is evaluated against all five SOLID principles.
It introduces rigid Object Calisthenics rules. The agent wraps raw primitives like IDs, emails, and money amounts into dedicated value objects, avoids else blocks, limits methods to under 10 lines, and keeps classes below 50 lines. This level of discipline noticeably increases the class count and initial boilerplate.
For architecture, the skill mandates vertical slices and inward dependencies where external infrastructure depends on the core domain layer. During reviews, it spots architectural smells such as feature envy, shotgun surgery, and bloated parameter lists.
What it helps with
- refactor legacy classes into single-responsibility components
- enforce test-driven development with the Red-Green-Refactor loop
- replace bare primitive types with domain value objects
- detect code smells and excessive coupling during code review
Example prompts for the agent
- Implement the checkout workflow using TDD and SOLID principles
- Refactor this controller to remove nested conditionals and wrap primitive values
- Review this pull request for SOLID violations and code smells
How to install solid
1Skills CLI (Vercel)
npx skills add ramziddin/solid-skills --skill solid -a claude-code2Manually: put the files in place
~/.claude/skills/solid/SKILL.mdCopy the whole skill folder; for one project use .claude/skills/solid/
1Skills CLI (Vercel)
npx skills add ramziddin/solid-skills --skill solid -a codex2Manually: put the files in place
.agents/skills/solid/SKILL.mdFor all projects use ~/.agents/skills/
1Skills CLI (Vercel)
npx skills add ramziddin/solid-skills --skill solid -a cursor2Manually: put the files in place
.cursor/skills/solid/SKILL.mdCursor also reads .agents/skills/ and .claude/skills/
1GitHub CLI
gh skill install ramziddin/solid-skills solid2Manually: put the files in place
.github/skills/solid/SKILL.md1Skills CLI (Vercel)
npx skills add ramziddin/solid-skills --skill solid -a gemini-cli2Platform CLI
gemini skills install https://github.com/ramziddin/solid-skills --path skills/solidManually: put the files in place
.devin/skills/solid/SKILL.mdThe legacy .windsurf/skills/ path still works
Skills CLI (Vercel)
npx skills add ramziddin/solid-skills --skill solid -a opencodeClaude.ai
Zip the folder and upload it in Settings → Capabilities → Skills
Step by step, with commands for each platform: How to install skills in Claude Code: five ways
Questions about solid
How to install solid in Claude Code?
Run npx skills add ramziddin/solid-skills --skill solid -a claude-code in your terminal. The configuration file will be placed at ~/.claude/skills/solid/SKILL.md.
What does the solid skill do?
It guides the agent to write tests before code, enforce SOLID principles, and eliminate code smells during implementation and refactoring.
What code constraints does this skill enforce?
It mandates wrapping primitive types in dedicated value objects, restricts methods to under 10 lines, and caps classes at two instance variables.
Similar skills
All skills for Code review and refactoring →solid by other authors comes first.
