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Measured on six things

A free, open-source platform offering 110 AI agent skills...

Accessibility

Skills include a11y best practices and testing workflows. Multi-format support makes it accessible across 40+ AI coding tools. Open-source nature allows community contributions for broader coverage.

Screenshots

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Vibe Coding Agent Skills

About this app

YepAPI Skills is a game-changer for developers and AI enthusiasts looking to supercharge their coding workflows. As a tech-savvy user, I've found it incredibly useful for turning AI assistants into domain experts without the hassle of custom training. The platform provides 110 free skills—think of them as cheat sheets or context files—that you can drop into projects to guide AI tools like Cursor, Claude Code, Cline, and Windsurf. These skills cover everything from Next.js and React best practices to SEO audits, security patterns, and real-time data workflows, all formatted for your specific tool. What stands out is the seamless integration: just copy-paste a skill, and your AI starts generating code that follows current conventions, reducing hallucinations and speeding up development. The YepAPI-powered skills even connect to real data via API endpoints, offering $5 free credit for SEO, scraping, and more. It's like having a curated AI agent marketplace without the paywall, making i...

Key features

1110 completely free, open-source skills across 11 categories including Next.js, security, SaaS patterns, and real-time data
2Native support for Cursor, Claude Code, Cline, Windsurf, Copilot and 40+ other tools with correct file formats
3$5 free YepAPI credit for 14 skills that connect agents to live SEO, scraping, SERP, and YouTube data

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

Solo developers and indie hackers building web apps with AI assistance

Pain points

AI tools hallucinate outdated code, lack domain-specific knowledge, and require manual prompting for best practices

Primary needs

Pre-configured context files to make AI coding tools smarter, faster development cycles, and free resources

Demographic

Tech teams and startups using AI agents for production workflows

Pain points

Inconsistent code quality across team members, time spent on training AI, and integration challenges with real data APIs

Primary needs

Standardized skills for team collaboration, security and framework expertise, and scalable AI agent configurations

Demographic

AI agent builders and developers experimenting with vibe coding or agent platforms

Pain points

Limited access to pre-built agent tools, high costs for custom solutions, and fragmented formats across different AI coding tools

Primary needs

Open-source, portable skills across tools, real data integration for agents, and community-driven updates

Scout Review

Written by AI from measured evidence, scored out of 100.

YepAPI Skills is one of the highest-ROI free tools available for AI-powered development. 110 expertly crafted, multi-format skills eliminate the biggest pain points of tools like Cursor and Claude Code: outdated knowledge, repetitive prompting, and lack of domain expertise. The combination of pure best-practice skills plus real-data API skills with free credit makes it uniquely valuable. Open-source, no paywall, works everywhere. If you're doing any serious vibe coding or building AI agents, this should be in every project within the next week.

Measure by measure

Usability

Zero signup for 96 core skills. npx one-liner installs all 110 in correct formats for Cursor (.cursorrules), Claude (CLAUDE.md/SKILL.md), Cline, Windsurf, Copilot, and 40+ others. Drop-in context eliminates manual prompting and reduces hallucinations instantly.

Design

Clean, category-organized landing page with simple three-step flow (Pick → Copy/Download → Build). Skills presented as easy-to-browse markdown cards. One-command install via npx skills add YepAPI/skills adds strong polish.

Speed

Instant copy-paste or one-command install. Pre-built context files dramatically cut prompting time and iteration cycles. YepAPI-powered skills give real-time data (SEO, scraping, etc.) without building your own connectors.

Security

Dedicated security skills for input validation, XSS prevention, auth patterns, GDPR. Open-source on GitHub for review. YepAPI skills require API key only for the 14 data-connected ones ($5 free credit, no card needed).

Accessibility

Skills include a11y best practices and testing workflows. Multi-format support makes it accessible across 40+ AI coding tools. Open-source nature allows community contributions for broader coverage.

Growth

110 free skills across 11 categories (Next.js, React, Prisma, Stripe, SaaS patterns, real-time data via YepAPI). Community-driven GitHub repo, no vendor lock-in, portable across tools. $5 free API credit lowers barrier for data-rich agents.

Improvement areas

More pre-built skill bundles for complete modern stacks (T3, Supabase, Shadcn, etc.)
Visual skill composer or customization UI to make editing skills less painful
Expanded free data endpoints or better no-auth fallback capabilities
Official integrations or plugins for popular agent frameworks beyond raw markdown

Design & Usability

Vibe Coding Agent Skills (yepapi.com/skills) delivers exactly what solo devs and AI-augmented teams need: a massive library of 110 ready-to-use context files that turn generic LLMs into domain experts. The design is straightforward — categorized browsing, clear examples, and dead-simple installation via one npx command or copy-paste. Usability is exceptional because it supports every major AI coding tool out of the box (Cursor, Claude Code, Cline, Windsurf, Gemini, Copilot). No more writing lengthy custom instructions or fighting hallucinations about outdated Next.js patterns or security anti-patterns. The 14 YepAPI-powered skills that connect to real SEO, scraping, and YouTube data with $5 free credit are particularly powerful for agent builders. It's the closest thing to a free, open AI agent marketplace that actually works today.

Speed & Security

Speed gains are immediate. Instead of spending time on prompt engineering or fine-tuning, you drop in a skill and the AI starts following current best practices for Tailwind, Prisma, Stripe subscriptions, or real-time data pipelines. Security coverage is robust with dedicated skills for auth, input sanitization, XSS, and compliance. While not a replacement for professional security review, having these patterns baked into your AI's context dramatically improves baseline code quality across a team. Compared to Cursor's paid extensions marketplace or manually crafting Claude skills, this is dramatically faster to adopt and scales better for indie hackers and small teams.

Accessibility & Growth

Accessibility and growth both benefit from the open-source model on GitHub. Skills covering a11y, testing, i18n, and performance give developers structured guidance their AI can consistently follow. The growth potential is high — community contributions, no lock-in, and portability across 40+ tools mean this can become the de-facto standard for 'vibe coding' agents. Target customers (solo devs frustrated with hallucinated code, tech teams needing consistency, and agent builders) get massive value from the free tier and low-friction data integration. It's a force multiplier for anyone shipping web apps with AI assistance in 2026.

Conclusion

Stop fighting your AI. Give it the cheat codes. Go to yepapi.com/skills, run the npx command, and thank me later when your Cursor or Claude starts writing code that doesn't suck.

Suggestions for improvement

Add more advanced MCP/server-style skills that go beyond static context files for deeper tool integration.
Create official verified 'bundles' for popular stacks (e.g. Next.js 15 + Tailwind + Supabase + Stripe).
Build a web-based skill composer or editor so users can easily customize and contribute new skills.
Expand the YepAPI free tier or add more no-key fallback options for popular real-world data queries.

How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

	Vibe Coding Agent Skills	Cursor Extensions Marketplace	Claude Code Custom Skills
Number of ready-to-use skills/context files	110 free, multi-tool	Limited extensions, many paid	Manual creation only, no central repo
Cost to access core skills	Completely free, open-source	Many paid extensions + Cursor Pro ($20/mo)	Free but requires your own time/expertise
Ease of adoption across AI tools	One npx command, formats for 40+ tools	Cursor-only	Claude-specific, manual
Real data/API integration	14 skills with $5 free YepAPI credit (SEO, scraping)	Limited via extensions	Requires custom code per skill