Agent skills
Skills that teach your coding agent a specific job.
These are the instruction sets I keep for agents like Claude Code, Codex and Cursor. Each one covers a particular kind of work, such as reviewing code, designing a screen or putting a site online, so pick what you’re trying to do, read what the skill is for, and copy a prompt that installs it in one project or across all of them.
89 skills, free to use, with the source on GitHub and the same files the yeknal CLI installs.
Start with a task
Six common jobs and the skill I’d reach for first.
- Build a feature from a rough brief Start with Implement
- Get a second opinion on my code Start with Code review
- Design a screen that doesn’t look generic Start with Frontend design
- Figure out why something broke Start with Troubleshoot
- Check a change in a real browser Start with Browser automation
- Put a site online Start with Vercel deploy
Browse every skill
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Implement
Takes a scoped feature or fix from plan to working code while keeping the rest of the repository behaving as it did.
Install Implement for
Choosing one copies the prompt straight away, and you can read it first on the skill’s page.
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Code review
Reads code or a whole system for real defects, regressions and maintainability risks, then sorts what it finds by severity and effort.
Install Code review for
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Frontend design
Sets a distinctive visual direction for new or heavily reshaped UI, from typography and composition to palette and interface copy.
Install Frontend design for
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Troubleshoot
Works back from a reproducible error, failing build or slowdown to its cause before it suggests a fix.
Install Troubleshoot for
Choosing one copies the prompt straight away, and you can read it first on the skill’s page.
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Browser automation
Lets your agent open a real browser from the terminal to click through a flow, fill forms, take screenshots and read what’s on the page, so it can show you a change working.
Install Browser automation for
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Testing strategy
Plans tests around real end-to-end flows and writes down how things could fail before any isolated test gets added.
Install Testing strategy for
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Brainstorm
Generates and compares genuinely different approaches before anything is built, which helps when the problem is still fuzzy.
Install Brainstorm for
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Redesign an existing product
Refreshes the look or flow of a working site or app without breaking its behaviour or the data behind it.
Install Redesign an existing product for
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Web animation
Adds purposeful, accessible motion to components, pages, scrolling, gestures, SVG and canvas, with sensible timing and a reduced-motion fallback.
Install Web animation for
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Application security
Designs or hardens security across web apps, APIs, cloud setup, CI/CD pipelines and AI features, covering the OWASP-style risks a product is likely to face.
Install Application security for
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Git
Handles status, diffs, branches, commits, merges and pushes while leaving unrelated work in your checkout alone.
Install Git for
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Project handoff
Keeps a short HANDOFF.md at the root of the repository so the next session, or the next person, can pick up exactly where the work stopped.
Install Project handoff for
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Address PR comments
Works through the review and issue comments on the open GitHub pull request for your current branch, using the GitHub CLI.
Install Address PR comments for
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ADHD-friendly answers
Shapes answers into short, action-first steps with visible progress, which can make long tasks easier to follow.
Install ADHD-friendly answers for
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Animation in Expo
Builds animation for React Native and Expo apps with Reanimated, Gesture Handler, Expo Router and haptics, making the decisions that decide whether motion feels right on a device.
Install Animation in Expo for
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Animation vocabulary
Turns a vague description of a motion effect into its proper name, so you can ask an agent or a designer for exactly what you mean.
Install Animation vocabulary for
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Apple-style interface design
Brings Apple’s approach to fluid, physical motion and interface design to the web, from springs and interruptible gestures to materials, depth and typography.
Install Apple-style interface design for
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ASP.NET Core
Builds, reviews and upgrades ASP.NET Core applications using current official guidance, from Blazor and Razor Pages to Minimal APIs, SignalR and authentication.
Install ASP.NET Core for
Choosing one copies the prompt straight away, and you can read it first on the skill’s page.
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Brand kit images
Generates polished brand-guideline boards, logo systems and identity presentations as images, with deliberate composition and sparse typography.
Install Brand kit images for
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Break UI
Stress-tests a screen with realistic worst-case data, such as long names, missing fields, huge counts and non-Latin text, and reports every break with its fix.
Install Break UI for
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Changelog entries
Adds or updates a Keep a Changelog entry based on the changes and history that can actually be verified, so release notes describe what shipped.
Install Changelog entries for
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ChatGPT apps
Builds and troubleshoots ChatGPT Apps SDK projects that pair an MCP server with a widget UI, starting from the current official documentation.
Install ChatGPT apps for
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Cleanup
Removes dead code, stale dependencies and redundant configuration once it has confirmed they really are unused.
Install Cleanup for
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Cloudflare deploy
Deploys applications and infrastructure to Cloudflare using Workers, Pages and related services, with references for the platform’s products.
Install Cloudflare deploy for
Choosing one copies the prompt straight away, and you can read it first on the skill’s page.
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Commit, push and open a PR
Stages, commits, pushes and opens a GitHub pull request in one flow using the GitHub CLI.
Install Commit, push and open a PR for
Choosing one copies the prompt straight away, and you can read it first on the skill’s page.
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Content and SEO
Guides useful, accessible web content and technical SEO together, from page copy and metadata to structured data, sitemaps, canonical URLs and AI-search visibility.
Install Content and SEO for
Choosing one copies the prompt straight away, and you can read it first on the skill’s page.
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Dead code hunter
Finds and removes dead code, unused imports, unreachable branches and variables nobody reads, across Python, TypeScript, JavaScript and other languages.
Install Dead code hunter for
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Design engineering polish
Applies the careful interaction details and purposeful motion that Emil Kowalski is known for, so components feel considered rather than merely functional.
Install Design engineering polish for
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Design reference research
Researches comparable products and collects references into an evidence ledger and brief, so design decisions come from what works rather than what’s fashionable.
Install Design reference research for
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Design spec for AI design tools
Writes or updates a versioned DESIGN.md that gives AI design tools like Google Stitch clear guidance on tokens, components, content, states and motion.
View skill: Design spec for AI design tools View source of Design spec for AI design tools on GitHubInstall Design spec for AI design tools for
Choosing one copies the prompt straight away, and you can read it first on the skill’s page.
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Design taste for the web
Designs and builds expressive landing pages, portfolios and marketing sites from real product evidence instead of reusable AI layouts.
Install Design taste for the web for
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Domain modeling
Clarifies a project’s domain terms and boundaries and records the decisions in a glossary or architecture decision record.
Install Domain modeling for
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Engineering specialists
Routes implementation through focused guidance for the framework, language, API, data, build, CLI, realtime or deployment problem in front of you.
Install Engineering specialists for
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Figma to code
Turns Figma frames into production code that matches the design closely, using the Figma MCP server for design context, screenshots and assets.
Install Figma to code for
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Finalize
Runs the final documentation and quality checks, summarises the diff and handles any Git publishing you asked for.
Install Finalize for
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Find animation opportunities
Looks through a codebase or interface for places that should animate and rejects those that shouldn’t, proposing motion with exact values but changing nothing.
Install Find animation opportunities for
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Fix failing CI
Inspects failing GitHub Actions checks on a pull request, summarises the logs, drafts a fix plan and only makes changes once you approve.
Install Fix failing CI for
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Frame-based motion
Designs and builds scrubbable web animation made from generated or captured frames and driven by scroll, pointer, touch or data, for moments ordinary CSS can’t express.
Install Frame-based motion for
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Frontend developer
Implements or repairs accessible web interfaces in React, Vue or Angular, covering components, state, styling and browser behaviour.
Install Frontend developer for
Choosing one copies the prompt straight away, and you can read it first on the skill’s page.
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Full output
Makes the agent return complete code or documents without placeholder gaps, splitting long output only at real boundaries.
Install Full output for
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High-end visual design
Creates art-directed, showcase-level web interfaces with a product-specific visual idea, expressive type, deliberate composition and considered motion.
Install High-end visual design for
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Human-AI interface design
Designs AI features people can trust, covering suggestions, generation, copilots and agents, along with sources, uncertainty, approvals and recovery.
Install Human-AI interface design for
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Image generation
Generates and edits images through the OpenAI Image API, including masks, background removal, transparent backgrounds and batches of variants.
Install Image generation for
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Image to code
Studies an approved screenshot or concept image, works out its visual and responsive system, and builds the frontend to match it faithfully.
Install Image to code for
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Improve animations
Surveys an app’s existing motion like a senior motion designer would, then writes a prioritised audit with self-contained plans that other agents can carry out.
Install Improve animations for
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Industrial brutalist UI
Designs raw, mechanical interfaces that mix Swiss print typography with terminal aesthetics: rigid grids, extreme type contrast and utilitarian colour.
Install Industrial brutalist UI for
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Jupyter notebooks
Creates and edits Jupyter notebooks for experiments, explorations and tutorials, starting from bundled templates.
Install Jupyter notebooks for
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Linear
Reads, creates and updates issues, projects and team workflows in Linear.
Install Linear for
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Markdown management
Creates, merges, updates and audits Markdown without losing meaning, links or repository conventions, including README files and Agent Skills.
Install Markdown management for
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Minimalist UI
Designs clean editorial interfaces with warm monochrome palettes, strong typographic contrast, flat grids and restrained depth.
Install Minimalist UI for
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Mobile app concept images
Generates polished concept images of mobile app screens and flows inside a phone frame, with consistent hierarchy across screens. It creates images, not code.
Install Mobile app concept images for
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Mobile app design
Designs and builds mobile screens and flows that feel native, especially in Expo or React Native, covering navigation, controls, states, accessibility and performance.
Install Mobile app design for
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Modern Swift
Writes and reviews modern Swift, including value types, Swift 6 data-race safety, concurrency, generics, API design, performance and Swift Testing.
Install Modern Swift for
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Netlify deploy
Deploys and links web projects on Netlify with the Netlify CLI, including preview and production deploys.
Install Netlify deploy for
Choosing one copies the prompt straight away, and you can read it first on the skill’s page.
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Next.js developer
Builds and maintains Next.js apps using the version, router, rendering model and deployment target the project already has.
Install Next.js developer for
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Notion knowledge capture
Turns conversations and decisions into structured Notion pages, such as wiki entries, how-tos, decision records and FAQs, with proper links.
Install Notion knowledge capture for
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Notion meeting prep
Prepares meeting materials from Notion context and research, such as agendas and pre-reads tailored to the people attending.
Install Notion meeting prep for
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Notion research and docs
Researches across several Notion sources and writes structured briefs, comparisons or reports with citations.
Install Notion research and docs for
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Notion spec to plan
Turns a spec or PRD in Notion into an implementation plan with tasks and progress tracking.
Install Notion spec to plan for
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OpenAI docs
Answers OpenAI product and API questions from the official documentation, including current model choices, migrations and prompt reviews, with citations.
Install OpenAI docs for
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Orchestration specialists
Organises work across several agents and tools, covering task distribution, context management, evidence synthesis, prompt engineering and MCP design.
Install Orchestration specialists for
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PDF files
Reads, creates and reviews PDFs where layout matters, rendering pages to check them and using Python tools for generation and extraction.
Install PDF files for
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Pick a UI library
Recommends the right library or inspectable source registry for a frontend need from a curated list, from accessible primitives to charts, toasts and drag and drop.
Install Pick a UI library for
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Prototype variants
Builds several genuinely different versions of a UI piece behind a visual picker, so you can flip between them live and keep the one that feels right.
Install Prototype variants for
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Render deploy
Deploys applications to Render by analysing the codebase, generating a render.yaml Blueprint and pointing you to the right dashboard pages.
Install Render deploy for
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Research and analysis
Researches and compares sources, checks them against each other and writes evidence-backed reports for market, competitive, trend or data questions.
Install Research and analysis for
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Review animations
Checks existing motion against a high craft bar, from easing and duration to interruption and reduced-motion behaviour, and explains each fix.
Install Review animations for
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Screenshots
Captures desktop or system screenshots of the whole screen, one window or a region, for when the browser or tool can’t capture what you need.
Install Screenshots for
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Security best practices
Reviews Python, JavaScript, TypeScript or Go code for security issues and writes secure-by-default code when you ask for it.
Install Security best practices for
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Security ownership map
Maps who owns sensitive code from Git history and highlights bus-factor risk and code nobody looks after.
Install Security ownership map for
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Sentry errors
Inspects Sentry issues and events, summarises recent production errors and pulls basic health data, using read-only queries.
Install Sentry errors for
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Slide decks
Creates and edits PowerPoint decks with PptxGenJS, including charts and diagrams, and checks rendered slides for overflow and font problems.
Install Slide decks for
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Sonner toasts
A practical guide to Sonner, the React toast library, from wiring up the Toaster to promise toasts, styling, theming and the usual reasons toasts misbehave.
Install Sonner toasts for
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Sora video
Generates, edits, extends and downloads Sora videos, and runs batches of video jobs through a bundled command-line tool.
Install Sora video for
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Spreadsheets
Creates, edits, analyses and formats spreadsheets in .xlsx, .csv and .tsv, keeping formulas working and checking the result visually.
Install Spreadsheets for
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Test audit
Reviews a test suite for checks that prove real behaviour, and flags redundant or implementation-coupled tests worth removing.
Install Test audit for
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Text to speech
Turns text into narration or voiceover with the OpenAI Audio API’s built-in voices, including batches for longer scripts.
Install Text to speech for
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Threat model
Builds a threat model grounded in the actual repository, covering assets, trust boundaries, abuse paths and mitigations.
Install Threat model for
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Transcribe audio
Transcribes audio and video recordings to text, with optional speaker labels and hints for speakers you already know.
Install Transcribe audio for
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UI and UX design
Designs user-centred interface systems that balance intuitive flows with a distinctive visual direction, from information architecture to interaction patterns.
Install UI and UX design for
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UI quality baseline
Applies a shared set of visual, responsive, accessibility, state and motion checks whenever an agent creates or changes visible UI.
Install UI quality baseline for
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Vercel deploy
Deploys applications and websites to Vercel and gives you the link, with preview deploys by default and production when you ask.
Install Vercel deploy for
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Web game development
Gives your agent a reliable loop for building browser games: make a small change, play it through a Playwright script, then check screenshots and console errors.
Install Web game development for
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Website concept images
Generates website concept images for landing pages and sections that developers can actually read and build from.
Install Website concept images for
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WinUI apps
Creates and develops WinUI 3 desktop apps in C# with the Windows App SDK, following Microsoft’s guidance and WinUI Gallery patterns.
Install WinUI apps for
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Word documents
Reads, creates and edits .docx files where formatting matters, and renders pages to check the layout visually.
Install Word documents for
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Design taste for the web (v1)
The original version of the design-taste skill, kept for projects that depend on its exact behaviour.
Install Design taste for the web (v1) for
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GPT taste (compatibility)
Kept so older requests for gpt-taste still work. It hands premium art direction over to High-end visual design.
Install GPT taste (compatibility) for
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Skill router (legacy)
An older installable router that tells an agent how to find and load the right Yeknal skill for substantive work.
Install Skill router (legacy) for
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No skills match yet
Try a broader word, or browse everything by task.