Wondel.ai Skills 🧩 Skill Open source

What it does

Wondel.ai Skills is a collection of agent skills that turn frameworks from well-known books and style guides into working instructions for coding and general agents. Around a third cover software engineering, while the rest cover UX, product strategy, marketing and sales. On top of these sit metaskills, guided journeys that run several skills in order and keep their progress in the project's docs/ folder so a journey can continue across sessions.

What is inside

Engineering skills draw on clean code, refactoring, software design philosophy, the pragmatic programmer, domain-driven design, data-intensive systems, system design, clean architecture, release engineering, browser performance, legacy code and technical documentation. Design skills include UI refinement, Apple's interface guidelines, usability heuristics, typography and microinteractions. The metaskills are the most distinctive part: journeys to create, improve or grow an app, website or business, and engineering journeys to take a vibe-coded prototype to production, pay down technical debt, design an architecture or optimise an existing codebase. These write tracker files such as testing, tech-debt and reliability notes as they go.

Works with

Any agent that reads the open SKILL.md format, including Claude Code, Codex and Cursor. It is also packaged as Claude Code plugin collections, a Codex plugin marketplace and Agent Plugins.

How to install

In Claude Code, add the marketplace and install a collection:

/plugin marketplace add wondelai/skills
/plugin install code-craftsmanship@wondelai-skills

Or install everything with skills.sh:

npx skills add wondelai/skills --all --global

Maintenance and safety

MIT licensed and updated regularly. The skills are Markdown only. The README links to the source books through affiliate links and promotes the authors' consulting services, and the non-engineering half is outside the scope of building software, so install only the collections you need. The skills summarise methods rather than reproduce the books, but the advice is still generic until you give the agent real project context.

Who should use it

Developers who want their agent to review and refactor code against established engineering principles, and solo builders who want a guided path from prototype to a maintainable product.