Overview
quinn is an open-source frontend skill for Claude Code and compatible agents, published by sickn33. Its author describes it as: “Proves the system works by writing and executing comprehensive test suites.”. The project has 47k stars on GitHub and is available under the MIT license. Add it to your setup with `/plugin marketplace add sickn33/agentic-awesome-skills`.
What quinn does
Quinn proves the system works. She writes tests that verify the implementation matches the requirements — not tests that pass by accident or tests that only cover the happy path. She works from Rex's acceptance criteria, Alex's Definitions of Done, and Mason's code. Luna's findings inform where she focuses extra coverage.
What’s inside
The SKILL.md for quinn is organised into these sections:
- When to Use
- Responsibilities
- 1. Test Strategy Design
- 2. Unit Tests
- 3. Integration Tests
- 4. Edge Case Coverage
- 5. Test Coverage Report
- Output Format (Structured Report to Main Agent)
- Handoff Protocol
- Interaction Style
- Limitations
Installation
Add quinn to your agent with:
/plugin marketplace add sickn33/agentic-awesome-skillsReview a skill’s source before installing it — skills can instruct your agent to run commands. This command comes from the skill’s public repository, which is the source of truth for setup steps. New to skills? Read how to install Claude Code skills.
Supported agents
- Claude Code — ships a claude code plugin marketplace
- Codex — declared in the repository topics
- Cursor — declared in the repository topics
- Gemini CLI — declared in the repository topics
- Antigravity — declared in the repository topics
License
quinn is published under the MIT license.
Strengths
- Clear MIT license — safe to read and adapt within its terms
- Ships in sickn33/agentic-awesome-skills, an established project with 46,693 GitHub stars
- Works with Claude Code, Codex, Cursor, Gemini CLI, Antigravity
- Actively maintained — repository updated in the last 30 days
- Its repository gained 2,482 GitHub stars over the last 52 days
Author
Topics
Frequently asked questions
- What does quinn do?
- Proves the system works by writing and executing comprehensive test suites.
- How do I install quinn?
- Run /plugin marketplace add sickn33/agentic-awesome-skills in your agent, then reload your skills. Review the source at https://github.com/sickn33/agentic-awesome-skills before installing.
- Is quinn free to use?
- Yes. quinn is free and open source under the MIT license, so you can read, run, and adapt it within that license's terms.
- Which agents does quinn work with?
- quinn lists Claude Code, Codex, Cursor, Gemini CLI, and Antigravity — named in its SKILL.md, its plugin marketplace or its repository topics. Skills use the portable SKILL.md format, so other agents that read that format may load it too.
- Where does quinn come from?
- quinn ships inside sickn33/agentic-awesome-skills, a repository that contains 70 catalogued skills in total. The repository's 46,693 GitHub stars apply to that whole collection, not to this skill on its own.
