🎨 Web & Frontend
With 4.694 skills e 4,5M installs, is the most mature group for frontend developers. All three references are vendor-backed with very high install counts—very low risk to install.
frontend-design
488kanthropics/skills
Anthropic’s own design guidelines. Official source + 488k installs = the reference for a beautiful, consistent interface.
vercel-react-best-practices
443kvercel-labs/agent-skills
React best practices from Vercel, the owner of Next.js. Description focused on generating/reviewing components. Perfect composition with the next one.
web-design-guidelines
358kvercel-labs/agent-skills
Web design guidelines: layout, spacing, accessibility. Atomic and composable with frontend-design.
💡 Recommended combo
frontend-design + vercel-react-best-practices + web-design-guidelines = a complete frontend agent, with each piece independently testable.
🤖 AI / LLM / Agents
The largest group in the catalog: 12.693 skills e 12,9M installs. It’s the heart of the ecosystem — including the tools that build other skills.
| Skill | Source | Installs |
|---|---|---|
| agent-browser | vercel-labs | 332k |
| skill-creator | anthropics | 246k |
| vercel-composition-patterns | vercel-labs | 195k |
Why skill-creator is special
skill-creator (246k, anthropics) is the canonical tool for creating skills — it’s meta: a skill that teaches the agent to write skills. It’s the anatomy reference you’ll study in Track 3.
agent-browser (332k) gives the agent browser control to test and extract data; vercel-composition-patterns (195k) teaches how to compose components and agents.
💡 Start here
If you’re going to install only one skill from this group, install skill-creator: it teaches you to evaluate and create all the others.
🗄️ Data & Databases
1,385 skills e 0.79M installs. A smaller group by volume, but where module 2.1's "prefer the vendor" rule shines: the best ones are written by the database companies themselves.
✗ Avoid for SQL/Postgres
- ✗generic ownerless repo "sql-helper"
- ✗A skill that mixes five different databases
- ✗No updates since the Postgres changes
✓ The references
- ✓supabase-postgres-best-practices — 203k · supabase
- ✓supabase — 99k · supabase
- ✓neon-postgres — 38k · neondatabase
Vendor-backed = the company that makes the database writes the best practices:
npx skills add supabase/... # supabase-postgres-best-practices (203k) npx skills add neondatabase/... # neon-postgres (38k)
The why
supabase-postgres-best-practices leads with 203k because it comes from the people who operate Postgres at scale. Maximum trust: the source knows the edge cases no one documents.
☁️ DevOps & Cloud
Only 907 skills, but 8.3M installs — the second largest by install volume. The emblematic case is the suite microsoft/azure-skills: five cohesive skills, each with between ~358k and 360k installs.
microsoft-foundry
~360kMicrosoft’s AI platform (Azure AI Foundry). The top of the suite.
azure-ai
~358kAzure AI services. Composable with the rest of the suite.
azure-deploy · azure-diagnostics · azure-prepare
~358-360kDeploy, diagnostics, and environment setup — each stage of the cycle is an atomic skill.
💡 The suite’s lesson
Microsoft didn't make an "azure-everything". It made five focused skills (foundry, ai, deploy, diagnostics, prepare) that work together — exactly the scope pattern from module 2.1, which is why they dominate the niche with huge install counts.
🧪 Testing & QA
1,339 skills e 0.60M installs. A lean but important group: it proves that skills aren't only about stack — they also encode engineering discipline.
test-driven-development
107kobra/superpowers
A skill for process: teaches the agent to write the test before the code. It’s not about a framework—it’s about method. It shows that a skill can encode discipline, not just syntax.
playwright-best-practices
45kE2E tests
End-to-end testing best practices with Playwright. Atomic and specific: it triggers only when you write browser tests.
Process skill vs. stack skill:
test-driven-development → COMO trabalhar (método, vale para qualquer linguagem) playwright-best-practices → COM O QUE trabalhar (ferramenta específica)
💡 Insight
Process skills such as TDD are underrated. They change agent behavior across every project, not just within one stack—very high ROI per installed skill.
📈 Marketing / Office / Finance
The ecosystem goes far beyond developers. Entire groups are dedicated to non-technical work: Marketing & SEO adds up to 2,3M installs, and Office&Files and Finance&Business have their own showcases.
marketing-psychology
84k · coreyhaines31
Psychological triggers applied to copy and campaigns. Author with a marketing track record—a trusted source outside the dev world.
lark-slides
139k · larksuite
Slide generation in Lark. Vendor-backed (larksuite/cli)—the office suite itself writes the skill.
stripe-best-practices
stripe/ai
Payment best practices from Stripe itself. For integrating billing, the official source is irreplaceable.
The pattern repeats
Even in business categories, the same signals apply: lark-slides and stripe-best-practices are vendor-backed; marketing-psychology comes from an author with a reputation in the field. Clear description, focused scope, reliable source — it doesn’t matter whether it’s code or copy.
✅ Module Summary
Next:
Module 2.3 — ⭐ Best Examples by Quality Signal — now that you’ve seen the showcase by group, explore the skills that perfectly embody each quality signal, ready for you to imitate.