Claude Skills
The open format is called Agent Skills and works in Claude Code, Codex, Cursor and other agents — most people know it as Claude Skills.
Every Agent Skill we could find on GitHub, deduplicated by content. 79 566 files from 1 758 authors, of which 61 913 are unique — the rest is the same skill repackaged into someone else's repository. For each one: what it weighs in tokens, whether it ships runnable scripts, and which MCP servers it needs.
Swift 6.2 InlineArray and Span types for zero-overhead memory access, fixed-size collections, and safe pointer alternatives. Use when optimizing performance-critical code paths.
SwiftData skills — class inheritance patterns for hierarchical models, type-based querying, polymorphic relationships, and inheritance-vs-enum decisions. Use when designing SwiftData model hierarchies.
SwiftData class inheritance patterns for hierarchical models with type-based querying, polymorphic relationships, and when to choose inheritance vs enums. Use when designing SwiftData model hierarchies.
SwiftUI framework skills — data flow (identity, Observation, state ownership), layout & containers (Layout protocol, lazy-stack performance), AlarmKit, 3D charts, rich text editing, customizable toolbars, and WebKit embedding. Use for SwiftUI state/rendering bugs, custom layouts, scroll performance, or these feature areas.
AlarmKit integration for scheduling alarms and timers with custom UI, Live Activities, and snooze support. Use when implementing alarm or timer features in iOS 26+ apps.
3D chart visualization with Swift Charts using Chart3D, SurfacePlot, interactive pose control, and surface styling — plus a 2D Swift Charts construction reference (marks, axes, selection, SectorMark, scrollable charts). Use when creating data visualizations with Swift Charts.
SwiftUI's actual mental model — view identity, lifetime, and dependencies (the Demystify canon), state ownership decision rules, Observation's per-property tracking, body-performance discipline, and the main-actor concurrency contract. Use when state resets mysteriously, views re-render too often, animations glitch between branches, choosing @State vs @Bindable vs plain property, or debugging "why did body run.
SwiftUI layout beyond stacks — the Layout protocol (when custom layout beats GeometryReader), Grid vs lazy grids, custom containers with sections and container values, and lazy-stack/ScrollView performance rules (what breaks laziness, prefetch discipline, scroll APIs). Use when building custom layouts or containers, fixing lazy-stack jank or memory growth, or wiring programmatic/snapping scrolling.
Styled text display and rich text editing in SwiftUI using Text, AttributedString, and TextEditor with formatting controls. Use when implementing rich text editing or styled text display.
Modern SwiftUI toolbar patterns including customizable toolbars, search integration, transition effects, and platform-specific behavior. Use when implementing or customizing toolbars in SwiftUI.
WebKit integration in SwiftUI using WebView and WebPage for embedding web content, navigation, JavaScript interop, and customization. Use when embedding web content in SwiftUI apps.
TDD and testing skills for iOS/macOS apps. Covers characterization tests, TDD workflows, test contracts, snapshot tests, test infrastructure, and deterministic quality gates (fitness functions, coverage ratchet, mutation testing). Use for test-driven development, adding tests to existing code, or building test infrastructure.
Generates tests that capture current behavior of existing code before refactoring. Use when you need a safety net before AI-assisted refactoring or modifying legacy code.
Gate test coverage with a ratchet — a committed baseline that coverage may never drop below and only ever rises. Ships a coverage-gate script (xccov-based) plus an advisory CRAP report (complexity × uncovered). Use when agent-written code needs a deterministic "tests were actually written" check.
Write architecture fitness functions — deterministic tests that enforce a project's hard rules (module boundaries, offline guarantees, content contracts) from inside its own test target. Use when a constraint lives only in prose (CLAUDE.md, code review) and should become un-arguable.
Verify UI *workflow* correctness that a task list, code review, and static screenshots miss. Drives end-to-end user flows in the Simulator via XCUITest with per-step screenshots, statically audits the navigation graph for dead-ends and missing edit paths, and emits a human discoverability checklist. Use after building any phase/slice that adds or changes UI, or when a user reports "I could only figure out the flow by running it.
Generate cross-module test harness with mock servers, in-memory stores, and test configuration. Use when testing networking + persistence + business logic together.
EXPERIMENTAL — mutation testing with muter to measure whether tests actually assert anything: mutants that survive reveal assertion-free coverage. Advisory report only, never a merge gate. Use on engine/logic targets when coverage numbers look good but bugs still slip through.
Set up SwiftUI visual regression testing with swift-snapshot-testing. Generates snapshot test boilerplate and CI configuration. Use for UI regression prevention.
Fix bugs using red-green-refactor — reproduce the bug as a failing test first, then fix it. Use when fixing bugs to ensure they never regress.
Red-green-refactor scaffold for building new features with TDD. Write failing tests first, then implement to pass. Use when building new features test-first.
Pre-refactor safety checklist. Verifies test coverage exists before AI modifies existing code. Use before asking AI to refactor anything.
Generate protocol/interface test suites that any implementation must pass. Define the contract once, test every implementation. Use when designing protocols or swapping implementations.
Generate test fixture factories for your models. Builder pattern and static factories for zero-boilerplate test data. Use when tests need sample data setup.
visionOS skills — spatial design (layout ergonomics, eyes-and-hands input, motion comfort, immersion, environments) and widget patterns (mounting styles, glass/paper textures, proximity-aware layouts). Use when designing, building, or reviewing anything for visionOS.
Designing for visionOS — spatial layout and ergonomics (60pt eye targets, field-of-view placement, dynamic scale), eyes-and-hands input with hover rules, motion and visual comfort (the 0.2 Hz rule, vection, depth-cue agreement), immersion strategy, spatial sound, and the video-format decision guide. Use when designing or reviewing any visionOS app, window, volume, or immersive experience.
visionOS widget patterns including mounting styles, glass/paper textures, proximity-aware layouts, and spatial widget families. Use when creating or adapting widgets for visionOS.
watchOS development guidance including SwiftUI for Watch, Watch Connectivity, complications, and watch-specific UI patterns. Use for watchOS code review, best practices, or Watch app development.
| Live affiliate program data from openaffiliate.dev. Search programs, compare commissions, check cookie days, find top performers. Use when researching affiliate programs, comparing options, or checking program details. Persistent daemon with cache — first call starts server (~2s), subsequent calls ~100ms.
> "create A/B test", "test my headline", "optimize my CTA", "generate variants", "split test ideas", "improve click-through rate", "test my landing page copy", "headline alternatives", "CTA variations", "which version is better", "optimize conversions", "test my email subject line", "compare approaches".
> "set up tracking", "create UTM links", "track my affiliate links", "tracking pixels", "click attribution", "organize my links", "UTM parameters", "tag my links", "campaign tracking", "link tracking setup", "prepare for launch", "debug attribution", "tracking spreadsheet".
> Analyze site's internal link structure and optimize for hub-and-spoke SEO architecture. "hub and spoke links", "orphan pages", "link equity", "internal link audit", "fix my internal links", "link architecture", "site structure optimization", "internal linking strategy", "link flow", "improve site structure", "find orphan pages", "maximize link equity", "internal link map".
> "show my affiliate report", "how are my programs doing", "performance review", "earnings report", "monthly affiliate report", "weekly report", "analyze my affiliate earnings", "which program is best", "EPC report", "conversion rate analysis", "revenue breakdown", "campaign performance".
> "audit my blog post for SEO", "check my SEO", "SEO review", "improve my rankings", "SEO checklist", "on-page SEO audit", "keyword optimization check", "why isn't my page ranking", "SEO score", "content quality audit", "check my meta tags", "internal linking audit", "quick SEO wins".
> "repurpose my content", "turn my blog into tweets", "cross-post this", "content recycling", "convert to newsletter", "make a tweet thread from this", "adapt for TikTok", "omnichannel content", "scale my content", "turn this into a LinkedIn post", "repurpose for email", "content multiplication".
> "build email automation", "create email funnel", "email automation flow", "welcome series with branches", "conditional email sequence", "set up automation", "email workflow builder", "segmented email flow", "advanced email sequence", "nurture funnel", "cart abandonment sequence", "win-back email flow".
> "manage my affiliate programs", "compare my programs", "portfolio overview", "which program should I focus on", "diversify my affiliate income", "program switching", "affiliate portfolio", "program comparison", "revenue allocation", "which programs to drop", "add new programs", "affiliate program strategy".
> "write ad copy", "Facebook ad for affiliate", "Google Ads copy", "TikTok ad script", "Pinterest ad", "paid traffic to affiliate", "create ad campaign", "ad headlines", "ad descriptions", "scale with paid ads", "run ads for my affiliate link", "write Facebook ad", "Google Search ad copy".
> Create original surveys, benchmarks, and aggregated data nobody else has. Automate data collection for content moats. "original research", "data-driven content", "create a survey", "industry benchmark", "aggregated data", "unique data", "first-party data", "data moat", "generate research data", "create a study", "original statistics", "data nobody else has", "competitive data advantage".
> Write SEO-optimized affiliate blog articles, product reviews, comparison posts, listicles, "best [category] article", "comparison blog", "affiliate blog", "SEO article", "write a review", "product roundup", "blog content for affiliate", "how to use [product] blog post", "listicle about [category]", "[product] vs [product] blog", "content for my affiliate site".
> Write "X vs Y" comparison blog posts that help readers choose between two competing products. "which is better [A] or [B]", "head to head comparison", "[product] vs [product] article", "comparison review", "write a versus article", "side by side comparison blog", "which should I choose [A] or [B]", "compare these two products for my blog".
> Monitor existing content for ranking drops and trigger refresh workflows. "ranking drops", "traffic decline", "stale content", "content audit", "what to refresh", "outdated content", "content performance check", "update old articles", "declining rankings", "content maintenance", "refresh priority list", "which articles are losing traffic", "SEO content audit".
> Estimate pages needed for topical authority. Go/no-go decision before investing months in content. "how many articles", "content gap analysis", "can I compete in this niche", "content investment calculator", "is this niche worth the effort", "SEO feasibility", "how many pages to rank", "content volume needed", "competitive content analysis", "moat calculation", "authority gap", "should I invest in this niche".
> Write how-to guides and tutorials that naturally integrate affiliate product recommendations. "how to [verb] with [product]", "write a tutorial blog post", "guide on how to [task]", "beginner guide to [topic]", "walkthrough for [product]", "write an educational article", "how do I [task] blog post", "write a tutorial that promotes [product]".
> Map 50-200+ keywords into topical clusters for SEO domination. Build content roadmaps for topical authority. "keyword strategy", "content roadmap for SEO", "keyword grouping", "topic clusters", "SEO keyword plan", "map my keywords", "keyword cluster", "hub and spoke content", "build topical authority", "SEO content plan", "keyword universe".
> Write "Top N best..." listicle articles for affiliate marketing with mini-reviews, pricing, "best [product category] article", "roundup post", "listicle about [category]", "write a top tools article", "best [N] alternatives to [product]", "product roundup", "write a tools comparison list", "best software for [use case]", "top picks for [category]".
> Take 1 blog post or article and generate 15-30 platform-native micro-content pieces. Not reformatting — re-contextualizing for each platform's culture. "content atomizer", "pillar content", "one to many content", "repurpose content", "multiply my content", "content explosion", "turn article into posts", "break down this article", "micro content from blog", "content pillar strategy", "10x my content", "platform-native content", "atomize", "content multiplication".
> Research trending topics, collect source articles, and generate a structured research brief for content creation. Stop writing from thin air — write from real sources. Use this skill when the user wants to research a topic before writing, collect sources for an article, create a research-backed content brief, or says "research [topic] for me", "find sources about [keyword]", "content brief for [topic]", "what's the latest on [product]", "research before writing", "collect articles about [keyword]", "trending news about [topic]", "gather sources for my article", "brief me on [topic]", "what are people saying about [product]", "news roundup for [keyword]", "research brief", "source collection", "content research", "prep research for writing".
> Generate branded infographic specifications from any content or data. Outputs structured layout, copy, data visualization, and color scheme — ready to render as HTML/CSS, Satori, Canva, or any design tool. Use this skill when the user wants an infographic, data visual, social media image, comparison chart, stat card, or says "create an infographic for [content]", "make a visual for my LinkedIn post", "design an image for [topic]", "stat graphic for [data]", "comparison infographic", "branded image", "social media graphic", "infographic for [blog post]", "data visualization", "visual content", "image for my post", "LinkedIn carousel image", "feature comparison chart", "pricing table image".
> Write Reddit posts and comments that recommend affiliate products without getting banned or flagged as spam. Subreddit-native content that adds value first. Use this skill when the user asks about Reddit posts for affiliate marketing, writing Reddit comments that mention products, how to promote affiliate links on Reddit, or says "write a Reddit post for X", "how to mention affiliate on Reddit", "Reddit comment promoting product", "Reddit-friendly affiliate content", "post for r/[subreddit] about X", "share affiliate link on Reddit without getting banned", "genuine Reddit recommendation", "organic Reddit affiliate post", "Reddit thread idea for product".
> Write short-form video scripts for TikTok, Instagram Reels, and YouTube Shorts that promote affiliate products with strong hooks, demos, and CTAs. Use this skill when the user asks about TikTok scripts, Reels scripts, Shorts scripts, short-form video for affiliate marketing, or says "write a TikTok for X", "script a Reel promoting X", "YouTube Shorts script affiliate", "60-second video script", "hook for TikTok affiliate", "write a video promoting X", "TikTok script that converts", "short video script for product review", "viral TikTok affiliate script", "how to promote X on TikTok".
> Write X/Twitter threads that get bookmarked, shared, and drive affiliate clicks. Use this skill when the user asks about writing Twitter threads, X threads, tweet threads for affiliate marketing, or says "write a thread about X", "Twitter thread promoting X", "X thread for affiliate", "write tweets that go viral", "thread that sells without selling", "educational thread with affiliate CTA", "Twitter content for affiliate marketing", "how to promote X on Twitter", "write a thread my audience will bookmark", "tweet storm about affiliate product".
> Write viral social media posts that promote affiliate products naturally. Use this skill when the user asks anything about writing social media content for affiliate marketing, creating posts for LinkedIn/X/Reddit/Facebook, promoting a product on social media, writing affiliate content, or mentions "viral post", "social media post", "content for affiliate". "create a thread about X", "make a Reddit post for X", "draft tweets for X", "social media content for affiliate program", "how to promote X on social", "write something that goes viral", "LinkedIn post for affiliate", "X thread about this tool", "help me sell X naturally on social media".
> Create a Linktree-style bio link hub page as a single self-contained HTML file. "bio link", "link hub", "create my link page", "all my links on one page", "linktree alternative", "build a link page", "bio page for my affiliate links", "I need a link in bio", "make a page with all my links", "link aggregator page".
> "write me an email sequence", "create a drip campaign", "email nurture sequence", "affiliate email funnel", "welcome email series", "email onboarding sequence", "write emails for my list", "set up a drip sequence", "email campaign for [product]", "nurture my subscribers", "email follow-up sequence", "build my email funnel", "write 5 emails promoting [product]", "email automation sequence".
> "deploy to GitHub Pages", "host on GitHub Pages", "free hosting for my affiliate site", "push to GitHub Pages", "GitHub Pages setup", "deploy my landing page to GitHub", "host my bio link on GitHub", "free affiliate website hosting", "github pages affiliate", "set up GitHub Pages for my site", "deploy HTML to GitHub", "free static hosting", "publish my affiliate page for free", "github pages custom domain".
> "create a social media calendar", "30-day content plan", "social media schedule", "content calendar for [product]", "plan my social posts", "social media strategy", "schedule my affiliate posts", "content plan for LinkedIn", "30 days of content", "social posting schedule", "what should I post this month", "write my social content", "create posts for LinkedIn X Facebook", "affiliate content calendar", "social media plan for my affiliate program".
> Design exclusive bonus packages that make YOUR affiliate link the obvious choice. "bonus ideas for", "exclusive bonuses", "differentiate my affiliate link", "why buy through my link", "affiliate bonuses", "bonus package", "what can I offer as a bonus", "design bonuses", "build a bonus stack".
> Design irresistible affiliate offers using the Hormozi Grand Slam framework. "why should someone buy through my link", "offer framework", "value proposition for", "Hormozi offer", "offer stack", "make my offer irresistible", "craft an offer", "what makes my offer different", "offer design", "increase perceived value".
> Create YOUR personal guarantee on top of the product's guarantee for risk reversal. "money back guarantee", "what guarantee can I offer", "reduce buyer risk", "guarantee copy", "how to guarantee", "affiliate guarantee", "personal guarantee", "risk-free offer", "satisfaction guarantee", "results guarantee".
Claude Skills — questions
Answers built from the skills we actually parsed.