AGENT SKILLS

Free Skills for Every AI Coding Tool

110 skills. Every format. Copy, paste, ship.

CursorClaude CodeClineWindsurfGemini CLICopilot

What Are Agent Skills?

You describe what you want. Your AI builds it. Skills make the AI better at it.

Agent skills — also called cursor rules, Claude Code skills, or AI coding rules — are markdown files you drop into your project. They give your AI assistant context about specific frameworks, APIs, and workflows. Instead of hallucinating deprecated patterns or guessing at conventions, your AI follows the rules you set.

Every tool has its own format. Cursor uses .cursorrules or .mdc. Claude Code uses CLAUDE.md or SKILL.md. Cline, Windsurf, and others each have their own. Every skill on this page comes in every format — pick your tool and copy.

Skills = context files that make your AI smarter at specific tasks. Like giving your AI a cheat sheet for Next.js, SEO audits, or TypeScript best practices.

One Command. 110 Skills.

npx skills add YepAPI/skills

Works with Claude Code, Cursor, Gemini CLI, Copilot, and 40+ more agents.

What gets installed:

14 yepapi-powered workflows skills

15 security skills

13 framework & stack skills

7 data & analytics skills

12 business & saas skills

6 ai & integrations skills

15 ui/ux & design skills

6 marketing & growth skills

5 infrastructure & scale skills

4 developer experience skills

14 practice & workflow skills

Three steps. Any tool.

Pick a skill

Browse 110 free skills across 11 categories — frameworks, SEO, AI, UI/UX, and more.

Copy or download

Each skill ships in every format. Pick your tool, copy the file. Or run one install command.

Start building

Your AI now knows the rules. Better code suggestions, fewer hallucinations, faster shipping.

YepAPI-Powered Workflows

Skills that connect your AI to real SEO, SERP, scraping, and YouTube data.

These skills use YepAPI endpoints — get a free API key at yepapi.com/dashboard ($5 free credit, no card).

AI Visibility

Monitor what ChatGPT and Gemini say about your brand using YepAPI.

Uses YepAPI

Backlinks

Link building research and backlink audit using YepAPI.

Uses YepAPI

Competitors

Competitive analysis between domains using YepAPI.

Uses YepAPI

Content Marketing

Blog engine setup, CMS integration, SEO-optimized content workflows, and editorial calendars.

Uses YepAPI

Content Research

Content planning with trend and sentiment data from YepAPI.

Uses YepAPI

Copywriting

AI-assisted copy generation, A/B headline testing, tone consistency, and CTA optimization.

Uses YepAPI

Keywords

Keyword discovery, metrics, ideas, and gap analysis using YepAPI.

Uses YepAPI

Link Building

Outreach tracking, backlink monitoring, DR/DA scoring, and competitor link analysis using YepAPI.

Uses YepAPI

Local SEO

Local business and Google Maps research using YepAPI.

Uses YepAPI

SEO Analysis

Full-site SEO scoring, crawl health, Core Web Vitals, and site-wide audit patterns using YepAPI.

Uses YepAPI

SEO Audit

Crawl, audit, analyze backlinks, and generate an SEO report using YepAPI.

Uses YepAPI

Social Media

Open Graph meta tags, Twitter cards, share buttons, social embed widgets, and social API patterns.

Uses YepAPI

Web Scraping

Smart web scraping with progressive fallback using YepAPI.

Uses YepAPI

YouTube

YouTube data extraction and analysis pipeline using YepAPI.

Uses YepAPI

Security

15 skills that make your AI write production-secure code by default — no security expertise required.

Input Validation

Server-side input validation — Zod schemas, HTML sanitization, strict API boundaries.

Auth Security

Authentication security — bcrypt/argon2 hashing, brute force protection, secure password resets.

Session Security

Session security — HttpOnly cookies, session rotation, idle timeouts, anti-fixation.

API Security

API security — strict CORS, rate limiting, payload limits, key rotation.

CSRF Protection

CSRF protection — SameSite cookies, double-submit pattern, token validation.

XSS Prevention

XSS prevention — Content Security Policy, DOMPurify, output encoding, CSP nonces.

SQL Injection

SQL injection prevention — parameterized queries, ORM safety, dynamic query guards.

Secrets Mgmt

Secrets management — .env safety, platform env vars, secret rotation, CI leak scanning.

Dependency Security

Dependency security — npm audit, lockfile verification, supply chain attack prevention.

Data Encryption

Data encryption — TLS everywhere, AES-256-GCM for PII, bcrypt passwords, encrypted backups.

Security Headers

Security headers — helmet.js, HSTS, X-Frame-Options, Permissions-Policy, referrer control.

Error Security

Error security — safe error responses, correlation IDs, no stack trace leaks in production.

RBAC

RBAC authorization — middleware guards, deny by default, resource-level permission checks.

Upload Security

Upload security — magic byte validation, size limits, safe storage, random filenames.

GDPR

GDPR compliance — data deletion, consent tracking, PII anonymization, data portability.

Framework & Stack

Rules for Next.js, React, TypeScript, and your whole stack.

API Design

REST conventions, Zod validation, and consistent error formats.

Auth

Session auth, social providers, CSRF protection, and secure cookie patterns.

Express/Fastify

Express.js and Fastify patterns: middleware, route organization, validation with Zod, error handling, plugin system, request lifecycle, TypeScript setup.

Monorepo

Turborepo monorepo — shared packages, build caching, pipeline config.

Next.js

App Router, Server Components, and modern Next.js 15 patterns — no Pages Router hallucinations.

Prisma

Prisma schema design, migrations, and query optimization.

React

Modern React hooks, composition, and Suspense — no class components.

shadcn/ui

shadcn/ui — Radix primitives, copy-paste components, and consistent theming.

Stripe

Stripe Checkout, webhooks, subscriptions, and idempotency patterns.

Supabase

Supabase with RLS enforcement, proper auth, edge functions, and type generation.

Tailwind

Utility-first Tailwind CSS with cn() helper, responsive, dark mode.

TypeScript

Strict TypeScript — discriminated unions, branded types, no any.

Drizzle ORM

Drizzle schema definition, push vs migrate, type-safe queries, relations, transactions, and prepared statements.

Data & Analytics

A/B testing, funnels, visualization, and real-time data patterns.

A/B Testing

Experiment setup, variant splitting, statistical significance, and feature flag integration.

Data Pipelines

ETL patterns, cron scheduling, queue-based processing, and batch jobs with Inngest/BullMQ.

Data Viz

Chart patterns with Recharts/Nivo/D3, responsive containers, color scales, and accessibility.

Funnels

Conversion funnel modeling, drop-off analysis, event tracking, and cohort-based metrics.

Real-Time

WebSocket setup, Server-Sent Events, polling patterns, reconnection, and optimistic updates.

Search

Full-text search with Meilisearch/Typesense/Algolia, faceted filtering, and instant results.

Exports

CSV/Excel/PDF generation from app data, streaming large datasets, and formatting.

Business & SaaS

Billing, admin panels, onboarding, and SaaS metrics.

Admin Panel

CRUD generators, data tables, user management, role-based access, and bulk operations.

Finance

Revenue dashboards, MRR/ARR calculations, burn rate trackers, and financial projections.

Invoices

PDF invoice generation, tax calculations, multi-currency, line items, and payment status.

Multi-Tenancy

Tenant isolation (row-level vs schema), subdomain routing, per-tenant config, and data partitioning.

Onboarding

Multi-step wizards, progress indicators, activation checklists, and welcome sequences.

Pricing

Tier comparison layouts, feature gates, toggle monthly/annual, and usage-based billing UI.

SaaS Metrics

Churn rate, LTV, CAC, cohort analysis, MRR waterfall, and expansion revenue tracking.

Subscriptions

Stripe subscription lifecycle, plan upgrades/downgrades, usage metering, and billing portal.

E-Commerce

Cart state with Zustand + persistence, product variants, Stripe checkout, inventory management, and order lifecycle.

Marketplace

Multi-vendor architecture, Stripe Connect onboarding, commission fees, escrow payments, seller dashboards, and reviews.

Team Mgmt

Team/org data model, email invitations, role assignment, seat-based billing, org switcher, and ownership transfer.

User Profiles

Profile settings, avatar upload with optimization, public/private toggle, activity timeline, and account deletion.

AI & Integrations

Chatbots, agents, OAuth, webhooks, and cron jobs.

AI Agents

Tool-use patterns, multi-step reasoning, agent orchestration, and structured outputs.

AI Chatbot

Chat UI components, streaming responses with AI SDK, context window management, and RAG patterns.

Cron Jobs

Scheduled tasks with Vercel Cron, Inngest, node-cron, crontab syntax, and error handling.

OAuth

Google/GitHub/Discord OAuth flows, PKCE, token refresh, and session management.

OpenAI

GPT API patterns, function calling, structured outputs with Zod, streaming, and token management.

Webhooks

Receive webhooks, signature verification, retry logic, and idempotency patterns.

UI/UX & Design

Landing pages, dashboards, animations, dark mode, and more.

Animations

Framer Motion — transitions, scroll animations, layout animations.

Charts

Recharts/Chart.js data visualization — bar, line, area, pie charts.

Dark Mode

Theme switching with CSS variables, system preference detection, next-themes, and persistence.

Dashboards

Layout grids, KPI cards, data tables with sorting/filtering, sidebar navigation, and responsive breakpoints.

Drag & Drop

Sortable lists, kanban boards, file drop zones with dnd-kit, touch support, and accessibility.

Images

Upload handling, resize/compress, CDN delivery, blur placeholders, and next/image patterns.

Landing Pages

High-converting landing page patterns — hero sections, CTAs, social proof.

Maps

Mapbox/Leaflet integration, geocoding, store locators, marker clusters, and route display.

Rich Text

Tiptap/Plate editor setup, slash commands, toolbar, collaborative editing, and markdown export.

Command Palette

cmdk integration, Cmd+K trigger, fuzzy search, grouped actions, keyboard navigation, and dynamic action registration.

Infinite Scroll

Cursor-based pagination, IntersectionObserver, virtualized lists with @tanstack/react-virtual, and scroll position restoration.

Toasts

Sonner toast library, promise toasts, action buttons, stacking, rich content, and swipe to dismiss.

Modals

Radix/shadcn Dialog, confirmation dialogs, sheets for mobile, focus trapping, scroll lock, and nested dialog support.

Advanced Tables

@tanstack/react-table with shadcn, column resizing, row selection, inline editing, virtualization, and server-side operations.

Comments

Threaded comments, @mentions, reactions, moderation queue, optimistic UI, and cursor pagination.

Marketing & Growth

SEO, analytics, email marketing, blogs, and notifications.

Analytics

Web analytics integration — event tracking, custom dashboards, privacy-first.

Blog Engine

MDX blog setup, RSS feed generation, sitemap.xml, structured data/JSON-LD, and related posts.

Content Strategy

Content calendar, keyword-driven planning, and content briefs.

Email Marketing

Newsletter systems, drip campaigns, template builders with Resend/SendGrid, and list management.

Notifications

Push notifications, in-app alerts, toast patterns, digest emails, and webhook dispatching.

Technical SEO

Sitemaps, robots.txt, structured data, and meta tag patterns for Next.js.

Infrastructure & Scale

Rate limiting, caching, logging, background jobs, and feature flags.

Background Jobs

Queue workers with BullMQ/Inngest/Trigger.dev, job retries, dead letter queues, concurrency.

Caching

Redis caching, CDN cache headers, stale-while-revalidate, cache invalidation, React Query.

Feature Flags

LaunchDarkly/Flagsmith/Vercel patterns, gradual rollouts, percentage splits, A/B toggles.

Logging

Structured logging, Sentry error tracking, Axiom/Datadog integration, log levels, alerting.

Rate Limiting

Token bucket, sliding window, per-user/IP limits, Redis-backed, Upstash patterns.

Developer Experience

i18n, E2E testing, API documentation, and CLI tools for better DX.

i18n

next-intl and react-i18next patterns, locale routing, message extraction, pluralization, RTL, and Intl API formatting.

E2E Testing

Playwright patterns: page objects, locator best practices, CI integration, visual regression, and parallel execution.

API Docs

OpenAPI 3.1 from Zod schemas, interactive docs with Swagger/Scalar, versioning, and example requests for every endpoint.

CLI Tools

Commander.js, interactive prompts with Clack, spinners, colors, config files, exit codes, and npm publishing.

Practice & Workflow

TDD, security, git, code review, and engineering best practices.

Accessibility

WCAG 2.1 AA — semantic HTML, keyboard navigation, screen readers.

Code Review

PR review checklist — correctness, security, performance, tests.

Database

Schema normalization, indexing strategy, and migration patterns.

Deployment

Vercel/Railway/Fly.io deployment — env vars, health checks, CI/CD.

Email

Resend + React Email — transactional templates and deliverability.

Error Handling

Structured errors, React error boundaries, and graceful degradation.

File Uploads

Presigned URL uploads, multipart for large files, S3/R2/Supabase Storage.

Forms

React Hook Form, Zod validation, and multi-step wizard flows.

Git Workflow

Conventional commits, branch naming, and PR templates.

Mobile-First

Mobile-first responsive design, touch targets, and PWA patterns.

Performance

Core Web Vitals, lazy loading, code splitting, and bundle analysis.

Security

OWASP top 10 prevention — XSS, CSRF, CSP, secrets management.

State

Zustand/Jotai for client state, React Query for server, URL for filters.

TDD

Test-first, red-green-refactor, integration over unit tests.

Works with every AI coding tool

Claude CodeCursorClineWindsurfGemini CLIGitHub CopilotBoltLovableAider

Every skill ships in every format. Pick your tool, copy the file.

Frequently asked questions about agent skills

Agent skills are markdown files that give AI coding tools context about specific topics — frameworks, APIs, workflows, and best practices. When you add a skill to your project, your AI assistant knows the rules and patterns for that topic. It stops hallucinating deprecated APIs and starts writing code that actually follows current best practices.

Same concept, different file names. Cursor uses `.cursorrules` or `.cursor/rules/*.mdc` files. Claude Code uses `CLAUDE.md` or `.claude/skills/` directory. Cline uses `.clinerules`, Windsurf uses `.windsurfrules`. The content is identical — the only difference is where the file goes and how the frontmatter is formatted. Every skill on this page comes in every format.

Copy the skill content from the Cursor tab, then paste it into a new file at `.cursor/rules/[skill-name].mdc` in your project root. Cursor will automatically load it. For older Cursor versions, paste it into your `.cursorrules` file.

The fastest way is `npx skills add YepAPI/skills` which installs all 110 skills automatically. Or copy a skill from the Claude Code tab and save it to `.claude/skills/[skill-name]/SKILL.md` in your project.

Yes, all 110 skills are completely free. No signup, no paywall. The YepAPI-powered skills (SEO audit, web scraping, etc.) reference YepAPI API endpoints — you need a free API key ($5 free credit, no card required) to use the actual API calls, but the skill files themselves are free.

Only for the 14 YepAPI-powered skills (SEO audit, web scraping, competitor research, etc.). These skills teach your AI how to call YepAPI endpoints for real data. The other 96 skills — like Next.js, React, TypeScript, TDD, security — work standalone with no API key needed.

Yes. Every skill on this page is available in every format: Claude Code, Cursor, Cline, Windsurf, AGENTS.md, and raw markdown. Pick your tool, copy the right format, and paste it into your project. The content is identical across formats — only the file location and frontmatter differ.

Drop in a skill. Ship faster.

110 free skills for every AI coding tool. No signup required.

Browse Skills Get API Key — $5 Free