Wondel.ai Skills

Agent skills for Claude Code and agentskills.io-compatible agents. Browse all skills at skills.wondel.ai.

Installation

Via Claude Code Plugin Marketplace

# Add the marketplace
/plugin marketplace add wondelai/skills

# Install plugin collections
/plugin install product-strategy@wondelai-skills      # Jobs to Be Done, Negotiation, Mom Test
/plugin install ux-design@wondelai-skills             # Refactoring UI, iOS HIG, UX Heuristics, Hooked, Improve Retention, Web Typography, Top Design, Design of Everyday Things, Lean UX, Microinteractions
/plugin install marketing-cro@wondelai-skills         # CRO Methodology, StoryBrand, Scorecard Marketing, Contagious, 1-Page Marketing
/plugin install sales-influence@wondelai-skills       # Influence Psychology, Predictable Revenue, Made to Stick, $100M Offers
/plugin install product-innovation@wondelai-skills    # Lean Startup, Design Sprint, Design of Everyday Things, Inspired, Continuous Discovery, 37signals Way
/plugin install strategy-growth@wondelai-skills       # Crossing the Chasm, Blue Ocean Strategy, Traction/EOS, Obviously Awesome
/plugin install team-motivation@wondelai-skills       # Drive (Autonomy, Mastery, Purpose)
/plugin install code-craftsmanship@wondelai-skills    # Clean Code, Refactoring Patterns, Software Design Philosophy, Pragmatic Programmer, DDD
/plugin install systems-architecture@wondelai-skills  # DDIA, System Design, Clean Architecture, Release It!, High Performance Browser Networking

Via skills.sh

Install via skills.sh:

# Install all skills
npx skills add wondelai/skills

# Or install individual skills
npx skills add wondelai/skills/jobs-to-be-done
npx skills add wondelai/skills/cro-methodology
npx skills add wondelai/skills/refactoring-ui
npx skills add wondelai/skills/ios-hig-design
npx skills add wondelai/skills/scorecard-marketing
npx skills add wondelai/skills/storybrand-messaging
npx skills add wondelai/skills/hooked-ux
npx skills add wondelai/skills/improve-retention
npx skills add wondelai/skills/ux-heuristics
npx skills add wondelai/skills/web-typography
npx skills add wondelai/skills/top-design
npx skills add wondelai/skills/negotiation
npx skills add wondelai/skills/influence-psychology
npx skills add wondelai/skills/lean-startup
npx skills add wondelai/skills/design-sprint
npx skills add wondelai/skills/crossing-the-chasm
npx skills add wondelai/skills/blue-ocean-strategy
npx skills add wondelai/skills/traction-eos
npx skills add wondelai/skills/design-everyday-things
npx skills add wondelai/skills/predictable-revenue
npx skills add wondelai/skills/made-to-stick
npx skills add wondelai/skills/drive-motivation
npx skills add wondelai/skills/hundred-million-offers
npx skills add wondelai/skills/obviously-awesome
npx skills add wondelai/skills/contagious
npx skills add wondelai/skills/one-page-marketing
npx skills add wondelai/skills/mom-test
npx skills add wondelai/skills/inspired-product
npx skills add wondelai/skills/lean-ux
npx skills add wondelai/skills/continuous-discovery
npx skills add wondelai/skills/microinteractions
npx skills add wondelai/skills/clean-code
npx skills add wondelai/skills/refactoring-patterns
npx skills add wondelai/skills/software-design-philosophy
npx skills add wondelai/skills/pragmatic-programmer
npx skills add wondelai/skills/domain-driven-design
npx skills add wondelai/skills/ddia-systems
npx skills add wondelai/skills/system-design
npx skills add wondelai/skills/clean-architecture
npx skills add wondelai/skills/release-it
npx skills add wondelai/skills/high-perf-browser
npx skills add wondelai/skills/37signals-way

Available Skills

Skill	Description	Based On
jobs-to-be-done	JTBD framework for product innovation	Clayton Christensen's "Competing Against Luck"
cro-methodology	Conversion rate optimization methodology	Karl Blanks & Ben Jesson's "Making Websites Win"
refactoring-ui	Practical UI design system	Adam Wathan & Steve Schoger's "Refactoring UI"
ios-hig-design	Native iOS app design guidelines	Apple's Human Interface Guidelines
scorecard-marketing	Quiz/assessment funnel lead generation	Daniel Priestley's "Scorecard Marketing"
storybrand-messaging	Clear brand messaging using story structure	Donald Miller's "Building a StoryBrand"
hooked-ux	Habit-forming product design	Nir Eyal's "Hooked"
improve-retention	Behavior design for user retention using B=MAP	BJ Fogg's "Tiny Habits"
ux-heuristics	Usability evaluation and principles	Steve Krug's "Don't Make Me Think" & Jakob Nielsen's 10 Heuristics
web-typography	Web typography principles and implementation	Jason Santa Maria's "On Web Typography"
top-design	Award-winning 10/10 web design matching elite agencies	Techniques from Locomotive, Studio Freight, AREA 17, Awwwards winners
negotiation	Tactical negotiation framework for high-stakes conversations	Chris Voss's "Never Split the Difference"
influence-psychology	Persuasion science and ethical influence principles	Robert Cialdini's "Influence: The Psychology of Persuasion"
lean-startup	Build-Measure-Learn methodology for startups and new products	Eric Ries's "The Lean Startup"
design-sprint	5-day process for validating ideas through prototyping and testing	Jake Knapp's "Sprint"
crossing-the-chasm	Technology adoption lifecycle and go-to-market for tech products	Geoffrey Moore's "Crossing the Chasm"
blue-ocean-strategy	Create uncontested market space with value innovation	W. Chan Kim & Renée Mauborgne's "Blue Ocean Strategy"
traction-eos	Entrepreneurial Operating System for running a business	Gino Wickman's "Traction"
design-everyday-things	Foundational design principles: affordances, signifiers, feedback	Don Norman's "The Design of Everyday Things"
predictable-revenue	Outbound sales process and Cold Calling 2.0 methodology	Aaron Ross's "Predictable Revenue"
made-to-stick	SUCCESs framework for creating memorable messaging	Chip Heath & Dan Heath's "Made to Stick"
drive-motivation	Intrinsic motivation science: Autonomy, Mastery, Purpose	Daniel Pink's "Drive"
hundred-million-offers	Grand Slam Offer creation: Value Equation, pricing, bonuses, guarantees, scarcity	Alex Hormozi's "$100M Offers"
obviously-awesome	Product positioning: competitive alternatives, unique value, target customers, market category	April Dunford's "Obviously Awesome"
contagious	Word-of-mouth and virality using the STEPPS framework	Jonah Berger's "Contagious"
one-page-marketing	End-to-end marketing plan: 9-square grid from prospect to raving fan	Allan Dib's "The 1-Page Marketing Plan"
mom-test	Customer interview framework: talk about their life, not your idea	Rob Fitzpatrick's "The Mom Test"
inspired-product	Empowered product teams with discovery and delivery dual-track	Marty Cagan's "Inspired"
lean-ux	Hypothesis-driven UX design with rapid experiments	Jeff Gothelf's "Lean UX"
continuous-discovery	Weekly customer touchpoints using Opportunity Solution Trees	Teresa Torres's "Continuous Discovery Habits"
microinteractions	Design triggers, rules, feedback, loops and modes for interaction polish	Dan Saffer's "Microinteractions"
clean-code	Readable, maintainable code through naming, small functions, and clean error handling	Robert C. Martin's "Clean Code"
refactoring-patterns	Named refactoring transformations to improve code structure safely	Martin Fowler's "Refactoring"
software-design-philosophy	Managing complexity through deep modules and information hiding	John Ousterhout's "A Philosophy of Software Design"
pragmatic-programmer	Meta-principles: DRY, orthogonality, tracer bullets, design by contract	Andrew Hunt & David Thomas's "The Pragmatic Programmer"
domain-driven-design	Model software around business domains with bounded contexts and aggregates	Eric Evans's "Domain-Driven Design"
ddia-systems	Data system design: storage engines, replication, partitioning, consistency	Martin Kleppmann's "Designing Data-Intensive Applications"
system-design	Scalable distributed systems: load balancing, caching, database scaling	Alex Xu's "System Design Interview"
clean-architecture	The Dependency Rule: dependencies point inward from frameworks to entities	Robert C. Martin's "Clean Architecture"
release-it	Production-ready systems: circuit breakers, bulkheads, timeouts, retry logic	Michael Nygard's "Release It!"
high-perf-browser	Web performance: network protocols, resource loading, browser rendering	Ilya Grigorik's "High Performance Browser Networking"
37signals-way	Build less, shape work, ship in six-week cycles with small autonomous teams	Jason Fried & DHH's "Getting Real", "Rework" & Ryan Singer's "Shape Up"

Looking for real-world scenarios? See EXAMPLES.md for 49 copy-pasteable prompts organized by persona (founders, PMs, marketers, designers, sales, copywriters, solopreneurs).

Skill Details

jobs-to-be-done

Strategic framework for discovering and designing product innovations. Customers don't buy products—they "hire" them to make progress in specific circumstances.

About the author: Clayton M. Christensen (1952–2020) was a Harvard Business School professor widely regarded as one of the most influential business thinkers of our time. Named the world's most influential business thinker by Thinkers50 in 2011 and 2013, he developed the theory of "disruptive innovation" and authored nine books including The Innovator's Dilemma. Christensen co-founded Innosight (growth strategy consultancy), Rose Park Advisors (investment firm), and the Christensen Institute (non-profit think tank). His JTBD framework, detailed in "Competing Against Luck", has been adopted by companies like Netflix, Intuit, and countless startups worldwide.

Use when you need to:

Understand why customers really buy (or don't buy) your product
Design a new product or feature from scratch
Write customer discovery interview questions
Analyze competition beyond obvious product categories
Diagnose why a product isn't selling or customers are churning
Create positioning and messaging strategy
Reframe product metrics around customer progress

Example prompts:

"Help me write interview questions to discover the job our customers hire our app for. Use jobs-to-be-done skill."
"Our signup-to-active rate is 20%. Diagnose why users aren't completing the Little Hire. Use jobs-to-be-done skill."
"What jobs might compete with our meditation app that aren't other meditation apps? Use jobs-to-be-done skill."
"Write a job statement for someone buying a $3000 online course. Use jobs-to-be-done skill."

cro-methodology

Scientific, customer-centric approach to conversion rate optimization. Rejects "best practices" in favor of evidence-based testing—understand WHY visitors don't convert before changing anything.

About the authors: Dr. Karl Blanks and Ben Jesson are co-founders of Conversion Rate Experts (CRE), the world's leading conversion rate optimization agency. They received the Queen's Award for Enterprise twice—first for Innovation (codifying the scientific methodology now used by companies like Amazon and Google), and again for International Trade. Their client list includes Google, Apple, Facebook, Amazon, Dropbox, and many other leading tech companies. Their methodology has generated billions in additional revenue. "Making Websites Win" became an Amazon #1 bestseller in 15 categories. All profits from the book are donated to the charity Mary's Meals.

Use when you need to:

Audit a landing page or website for conversion issues
Identify why visitors aren't converting (objections vs. UX problems)
Write persuasive copy that addresses customer objections
Design A/B tests with bold hypotheses (not button color tests)
Find hidden "persuasion assets" you're not using
Map and optimize a conversion funnel
Create an objection/counter-objection framework

Example prompts:

"Audit this landing page and list the top 5 objections a visitor might have. Use cro-methodology skill."
"Create an O/CO (objection/counter-objection) table for our SaaS pricing page. Use cro-methodology skill."
"What persuasion assets are we missing on this page? (testimonials, guarantees, credentials). Use cro-methodology skill."
"Rewrite this headline to address the 'is this worth my time?' objection. Use cro-methodology skill."

refactoring-ui

Practical, opinionated UI design system for developers. Design in grayscale first, add color last. Start with too much white space, then remove.

About the authors: Adam Wathan is a full-stack developer and entrepreneur best known as the creator of Tailwind CSS, the utility-first CSS framework that has become one of the most popular styling tools in modern web development. Steve Schoger is a visual designer from Canada known for his practical design tips that went viral on Twitter, helping developers improve their UI skills. Together, they created "Refactoring UI"—a book and video series teaching developers how to design beautiful interfaces without formal design training. Their collaboration bridges the gap between development and design, making good UI accessible to everyone who writes code.

Use when you need to:

Make a UI "look less amateur" without a designer
Fix visual hierarchy problems (everything looks the same importance)
Choose a consistent spacing and typography scale
Build a color palette with proper shades and contrast
Add depth with shadows and layering
Review UI code for common design mistakes
Style components in Tailwind CSS

Example prompts:

"This dashboard looks cluttered. Fix the hierarchy. Use refactoring-ui skill."
"Generate a color palette with 9 shades for a warm, friendly SaaS app. Use refactoring-ui skill."
"Review this card component and suggest spacing/typography improvements. Use refactoring-ui skill."
"The text is hard to read. What's wrong with the contrast and line height? Use refactoring-ui skill."
"Convert this design to Tailwind classes. Use refactoring-ui skill."

ios-hig-design

Design native iOS apps that feel intuitive and aligned with Apple's platform conventions. Covers layout, typography, navigation, gestures, colors, and accessibility.

About the source: Apple Inc. has published Human Interface Guidelines since the original Macintosh in 1984, making it one of the oldest and most influential design documentation in computing history. The Human Interface Guidelines define the design language for iOS, macOS, watchOS, tvOS, and visionOS—covering everything from typography and color to navigation patterns and accessibility. Apple's design philosophy emphasizes clarity, deference, and depth, creating interfaces that feel intuitive to billions of users worldwide. The HIG is continuously updated and represents decades of research into human-computer interaction.

Use when you need to:

Design iPhone or iPad app interfaces
Build SwiftUI or UIKit components that feel native
Validate if a design follows iOS conventions
Implement proper navigation patterns (tab bar, nav bar, modals)
Ensure accessibility (VoiceOver, Dynamic Type, contrast)
Handle safe areas, notch, and Dynamic Island correctly
Choose correct touch target sizes and spacing

Example prompts:

"Review this SwiftUI view and check if it follows HIG guidelines. Use ios-hig-design skill."
"What's the correct navigation pattern for a settings screen with sub-pages? Use ios-hig-design skill."
"Add proper accessibility labels to these interactive elements. Use ios-hig-design skill."
"This design uses a hamburger menu. What's the iOS-native alternative? Use ios-hig-design skill."
"Generate the correct icon sizes for App Store submission. Use ios-hig-design skill."

scorecard-marketing

Lead generation system using interactive quiz/assessment funnels. Converts 30-50% vs 3-10% for traditional PDF lead magnets by creating psychological tension and self-qualification.

About the author: Daniel Priestley is a serial entrepreneur who has built and sold multiple businesses. He founded Dent Global, one of the world's leading business accelerators for entrepreneurs, and co-founded ScoreApp, a marketing software platform serving over 150,000 businesses globally. Priestley has won major business awards and authored seven books on entrepreneurship, including bestsellers Key Person of Influence, Entrepreneur Revolution, Oversubscribed, and 24 Assets. "Scorecard Marketing", co-authored with Glen Carlson, distills the methodology that powers ScoreApp into a practical playbook for generating qualified leads at scale.

Use when you need to:

Create a lead magnet that actually converts
Build a quiz funnel landing page
Design assessment questions that qualify leads
Write dynamic results content based on score tiers
Set up automated follow-up sequences by segment
Generate scorecard concepts for any industry

Example prompts:

"Create a scorecard concept for a B2B accounting software company. Use scorecard-marketing skill."
"Write 15 assessment questions for a 'Marketing Maturity' scorecard with 5 categories. Use scorecard-marketing skill."
"Generate landing page copy for a 'Are You Ready to Scale?' quiz using the 3 Cs formula. Use scorecard-marketing skill."
"Write dynamic results page content for Low/Medium/High scoring tiers. Use scorecard-marketing skill."
"What follow-up email sequence should we send based on scorecard results? Use scorecard-marketing skill."

storybrand-messaging

StoryBrand framework for clarifying your message so customers will listen. Positions your customer as the hero and your brand as the guide in a story structure that resonates.

About the author: Donald Miller is the CEO of StoryBrand, a company that has helped more than 10,000 businesses clarify their messaging. His StoryBrand Framework is used by brands ranging from small startups to Fortune 500 companies. Miller is a New York Times bestselling author and popular keynote speaker. "Building a StoryBrand" has become one of the most influential marketing books of the past decade, teaching the 7-part framework that transforms confusing messaging into clear, compelling communication.

Use when you need to:

Clarify your brand message so customers understand it instantly
Write website copy that converts visitors to customers
Create one-liners and elevator pitches
Build landing pages with narrative structure
Position your customer as the hero (not your brand)
Diagnose why your current messaging isn't resonating
Develop a brand script for consistent communication

Example prompts:

"Create a StoryBrand brand script for my SaaS project management tool. Use storybrand-messaging skill."
"Write a one-liner for our accounting firm. Use storybrand-messaging skill."
"Audit this homepage copy—is the customer positioned as the hero? Use storybrand-messaging skill."
"What's the internal problem our customers face beyond the external one? Use storybrand-messaging skill."
"Generate a 3-step plan section for our services page. Use storybrand-messaging skill."

hooked-ux

Hook Model framework for building habit-forming products. The four-phase process (Trigger → Action → Variable Reward → Investment) that connects users to your product through successive cycles.

About the author: Nir Eyal is an author, lecturer, and investor who writes about the intersection of psychology, technology, and business. He previously taught at Stanford Graduate School of Business and has worked in the video gaming and advertising industries. "Hooked: How to Build Habit-Forming Products" has become essential reading for product designers and entrepreneurs, providing a practical framework for creating products that users return to repeatedly. His work has influenced product design at companies from startups to Fortune 500.

Use when you need to:

Increase user engagement and retention
Design habit loops in your product
Audit why users aren't returning
Create effective triggers and notifications
Design variable reward systems
Increase investment and switching costs
Evaluate the ethics of your engagement tactics
Optimize onboarding for habit formation

Example prompts:

"What's the internal trigger for our meditation app? Use hooked-ux skill."
"Design a variable reward system for our fitness tracking app. Use hooked-ux skill."
"Audit our onboarding—does it complete the full Hook cycle? Use hooked-ux skill."
"How can we increase investment in our note-taking app to improve retention? Use hooked-ux skill."
"Are we in the Habit Zone? Analyze our usage frequency vs. perceived value. Use hooked-ux skill."

improve-retention

Behavior design framework for diagnosing and fixing retention problems. Uses BJ Fogg's B=MAP model (Behavior = Motivation + Ability + Prompt) to systematically identify why users aren't completing key actions and design behaviors that stick.

About the author: BJ Fogg, PhD is the founder of the Behavior Design Lab at Stanford University, where he has directed research on behavior change since 1998. He created the Fogg Behavior Model (B=MAP), which has become the foundational framework used by product designers, health researchers, and behavior change professionals worldwide. Fogg coined the term "behavior design" and has trained thousands of innovators in his methods, including the founders of Instagram. "Tiny Habits: The Small Changes That Change Everything" distills two decades of research into a practical system for behavior change.

Use when you need to:

Diagnose why users aren't completing key actions
Reduce friction using the Ability Chain (6 simplicity factors)
Design effective prompts and notifications
Create tiny behaviors that compound into retention
Audit motivation-ability mismatches
Design onboarding that builds lasting habits
Apply B=MAP to improve activation and retention metrics

Example prompts:

"Our Day-7 retention is 20%. Diagnose using B=MAP — is it a motivation, ability, or prompt problem? Use improve-retention skill."
"Run a friction audit on our onboarding flow using the Ability Chain. Use improve-retention skill."
"Design a Tiny Habits recipe for our core daily action. Use improve-retention skill."
"Our push notifications have low click-through rates. Are we prompting below the Action Line? Use improve-retention skill."
"Why do users sign up but never complete their first project? Use improve-retention skill."

ux-heuristics

Usability heuristics and evaluation principles combining Steve Krug's practical "Don't Make Me Think" approach with Jakob Nielsen's 10 heuristics for systematic interface evaluation.

About the sources: Steve Krug is a usability consultant whose book "Don't Make Me Think" has been the go-to guide for web usability since 2000, selling over 600,000 copies. His common-sense approach has influenced a generation of designers. Jakob Nielsen, co-founder of Nielsen Norman Group, is often called "the king of usability." His 10 Usability Heuristics, published in 1994, remain the most-used framework for evaluating interface usability worldwide.

Use when you need to:

Audit a UI for usability problems
Identify why users are confused or frustrated
Simplify navigation and information architecture
Conduct heuristic evaluations
Prioritize UX fixes by severity
Review designs before development
Improve form usability
Validate that interfaces follow established UX principles

Example prompts:

"Run a heuristic evaluation on this checkout flow. Use ux-heuristics skill."
"Apply the Trunk Test to this homepage—can users answer the 6 key questions? Use ux-heuristics skill."
"Rate the severity of these usability issues from 0-4. Use ux-heuristics skill."
"What UX heuristics is this error message violating? Use ux-heuristics skill."
"Audit this form for usability issues and suggest fixes. Use ux-heuristics skill."

web-typography

Web typography principles for choosing, pairing, and implementing typefaces. Typography serves communication—the best typography is invisible, immersing readers in content rather than calling attention to itself.

About the author: Jason Santa Maria is a graphic designer, author, and educator whose work focuses on the intersection of design and technology. He has worked with clients including The New York Times, AIGA, and Happy Cog. Santa Maria was Creative Director at Typekit (now Adobe Fonts) and co-founded A Book Apart, the influential publisher of books for web professionals. He teaches at the School of Visual Arts in New York. "On Web Typography", published by A Book Apart in 2014, distills his expertise into a practical guide for choosing, evaluating, and implementing type on the web.

Use when you need to:

Select typefaces for body text, headlines, and UI
Evaluate typeface quality for screen readability
Pair fonts that work together (or decide to use just one)
Set optimal line length, line height, and font size
Implement responsive typography with CSS
Build type hierarchies that guide readers
Optimize web font loading for performance

Example prompts:

"Recommend a typeface pairing for a legal services website. Use web-typography skill."
"Evaluate if this Google Font is suitable for long-form reading. Use web-typography skill."
"Set up a fluid type scale using clamp() for responsive typography. Use web-typography skill."
"What's wrong with the typography on this blog post? The text feels hard to read. Use web-typography skill."
"Create CSS for optimal body text: font-size, line-height, and max-width. Use web-typography skill."

top-design

Create award-winning websites and applications with design and typography rated 10/10. Build premium digital experiences that match the quality of elite agencies like Locomotive, Studio Freight, AREA 17, Active Theory, Hello Monday, and Awwwards winners.

About the source: This skill synthesizes techniques from the world's top digital agencies—studios that consistently win FWA, Awwwards, CSS Design Awards, and Webby Awards. Every pixel is intentional, typography is architecture, motion creates emotion, and performance is non-negotiable.

Use when you need to:

Build premium portfolio sites, brand websites, or agency-level experiences
Create immersive web experiences with custom animations
Implement exceptional typography with dramatic scale contrast
Design scroll-based compositions with purposeful motion
Match the quality of Awwwards-winning sites

Example prompts:

"Build a portfolio site at the level of Studio Freight or Locomotive. Use top-design skill."
"Create an immersive hero section with award-winning typography. Use top-design skill."
"Design a scroll-based experience for a luxury brand. Use top-design skill."
"Review this website against top agency standards. Use top-design skill."
"Add custom animations that feel like an Awwwards winner. Use top-design skill."

negotiation

Tactical empathy-based negotiation framework from FBI hostage negotiator Chris Voss. Master techniques like mirroring, labeling, calibrated questions, and the Ackerman bargaining method to navigate high-stakes conversations.

About the author: Chris Voss is a former FBI hostage negotiator who served as the lead international kidnapping negotiator for the FBI. During his 24-year career, he was trained in the art of negotiation by the FBI, Scotland Yard, and Harvard Law School. Voss has taught negotiation at Harvard, Georgetown, MIT, and USC. He founded The Black Swan Group, a consulting firm that trains Fortune 500 companies, including Microsoft, Google, and Cisco. "Never Split the Difference: Negotiating As If Your Life Depended On It", co-authored with Tahl Raz, became a Wall Street Journal bestseller and has transformed how people negotiate in business, salary discussions, and everyday life.

Use when you need to:

Prepare for salary or contract negotiations
Handle difficult conversations with stakeholders
Craft responses to unreasonable demands
Analyze counterpart behavior and motivations
Navigate vendor or partnership negotiations
De-escalate tense situations
Build rapport in adversarial settings
Close deals without compromising your position

Example prompts:

"I'm negotiating a 20% raise. Help me prepare using the Ackerman method. Use negotiation skill."
"My client said 'that's not fair.' How do I respond? Use negotiation skill."
"Write calibrated questions to uncover why the vendor won't budge on price. Use negotiation skill."
"Draft an accusation audit for a meeting where they think we've been unresponsive. Use negotiation skill."
"How do I get them to say 'That's right' about our proposal? Use negotiation skill."
"The other party has gone silent. What's my re-engagement strategy? Use negotiation skill."

influence-psychology

Persuasion science framework applying Robert Cialdini's seven universal principles of influence (Reciprocity, Commitment & Consistency, Social Proof, Authority, Liking, Scarcity, Unity) to product design, marketing, and communication.

About the author: Robert B. Cialdini, PhD is Regents' Professor Emeritus of Psychology and Marketing at Arizona State University. His research on the psychology of influence has been published extensively and cited across disciplines. "Influence: The Psychology of Persuasion" has sold over 5 million copies worldwide and is considered the foundational text on persuasion science. Cialdini has consulted for Fortune 500 companies, government agencies, and nonprofits on ethical influence strategies.

Use when you need to:

Design features that leverage social proof
Write persuasive copy and messaging
Analyze why users take (or don't take) actions
Create onboarding flows using commitment/consistency
Design referral programs using reciprocity
Audit for ethical persuasion
Apply influence psychology to product, marketing, or sales

Example prompts:

"Audit this landing page for Cialdini's influence principles. Which are missing? Use influence-psychology skill."
"Design a referral program using reciprocity and social proof. Use influence-psychology skill."
"How can we use commitment/consistency in our onboarding flow? Use influence-psychology skill."
"Is this scarcity tactic ethical? Review against the ethical checklist. Use influence-psychology skill."

lean-startup

Build-Measure-Learn methodology for startups and new products. Test assumptions with MVPs, measure with actionable metrics, and decide when to pivot or persevere.

About the author: Eric Ries is an entrepreneur and author who co-founded IMVU, where he pioneered continuous deployment and customer development practices that became the foundation of Lean Startup. "The Lean Startup" has been translated into over 30 languages and has influenced startup culture worldwide. Ries is also the creator of the Long-Term Stock Exchange (LTSE).

Use when you need to:

Design MVP scope for new product ideas
Define validated learning experiments
Create innovation accounting frameworks
Decide when to pivot vs. persevere
Set up actionable metrics vs. vanity metrics
Reduce product development waste
Apply scientific method to entrepreneurship

Example prompts:

"What's the smallest MVP we can build to test our riskiest assumption? Use lean-startup skill."
"Are these vanity metrics or actionable metrics? Evaluate our dashboard. Use lean-startup skill."
"Should we pivot or persevere? Here's our data from the last 3 months. Use lean-startup skill."
"Design a smoke test to validate demand before we build anything. Use lean-startup skill."

design-sprint

Google Ventures' 5-day process for answering critical business questions through design, prototyping, and testing with real users.

About the author: Jake Knapp created the Design Sprint process while at Google, where he ran sprints on products like Gmail, Chrome, and Google X. As a design partner at Google Ventures (GV), he refined the process by running over 100 sprints with startups. "Sprint" is now used by teams at Google, Slack, Airbnb, LEGO, and thousands of companies worldwide.

Use when you need to:

Validate product ideas in 5 days instead of months
Rapidly prototype and test solutions
Align teams on product direction
De-risk product development before building
Make fast strategic decisions through structured process

Example prompts:

"Plan a 5-day design sprint for our new checkout flow. Use design-sprint skill."
"Create Monday mapping exercises for our sprint. Use design-sprint skill."
"Write a Friday interview script for testing our prototype. Use design-sprint skill."
"How do I run a design sprint with a remote team? Use design-sprint skill."

crossing-the-chasm

Strategic framework for marketing and selling disruptive technology products, focusing on the critical transition from early adopters to mainstream customers.

About the author: Geoffrey A. Moore is a consultant, venture partner, and author focused on disruptive innovation and market development. "Crossing the Chasm" has sold over 1 million copies and is required reading at many business schools and tech companies. Moore serves on the boards of several technology companies and advises Fortune 500 firms on technology adoption.

Use when you need to:

Identify where your product is in the adoption lifecycle
Choose a beachhead market segment
Build a "whole product" solution for mainstream buyers
Position against incumbent competition
Transition from early adopters to mainstream market
Develop B2B tech marketing strategy

Example prompts:

"Where is our product in the Technology Adoption Life Cycle? Use crossing-the-chasm skill."
"Help us choose a beachhead market segment. Here are our current customers. Use crossing-the-chasm skill."
"What's missing from our whole product? Use crossing-the-chasm skill."
"Rewrite our positioning for pragmatist buyers. Use crossing-the-chasm skill."

blue-ocean-strategy

Create uncontested market space using value innovation. Use the Strategy Canvas, Four Actions Framework (ERRC), and Six Paths to find blue oceans where competition is irrelevant.

About the authors: W. Chan Kim and Renée Mauborgne are professors of strategy at INSEAD and co-directors of the INSEAD Blue Ocean Strategy Institute. "Blue Ocean Strategy" has sold over 4 million copies, been translated into 46 languages, and is one of the best-selling business books of all time.

Use when you need to:

Analyze competitive landscape (red vs. blue oceans)
Create strategy canvas mapping competition
Use Four Actions Framework (Eliminate-Reduce-Raise-Create)
Design value innovation propositions
Identify non-customers and convert them
Break the value-cost trade-off

Example prompts:

"Create a strategy canvas for our market. Here are the competing factors. Use blue-ocean-strategy skill."
"Apply the ERRC grid to our product. What should we eliminate, reduce, raise, create? Use blue-ocean-strategy skill."
"Who are the three tiers of non-customers for our product? Use blue-ocean-strategy skill."
"Use the Six Paths Framework to find blue ocean opportunities in our industry. Use blue-ocean-strategy skill."

traction-eos

Complete Entrepreneurial Operating System (EOS) for running a business. Covers Vision/Traction Organizer, quarterly Rocks, Level 10 Meetings, Scorecard, Accountability Chart, and IDS process.

About the author: Gino Wickman is the creator of EOS and founder of EOS Worldwide. "Traction" has sold over 2 million copies and EOS is used by over 250,000 companies worldwide. His work focuses on the practical tools needed to run an entrepreneurial company.

Use when you need to:

Implement a complete business operating system
Create a Vision/Traction Organizer (V/TO)
Set quarterly rocks (priorities)
Run Level 10 meetings
Build accountability charts
Solve issues using IDS (Identify-Discuss-Solve)

Example prompts:

"Help us create a V/TO for our startup. Use traction-eos skill."
"Write 5 SMART rocks for Q2 based on our 1-year plan. Use traction-eos skill."
"Create a Level 10 meeting agenda and facilitation guide. Use traction-eos skill."
"Run the People Analyzer on this role—right person, right seat? Use traction-eos skill."

design-everyday-things

Foundational design principles: affordances, signifiers, mappings, constraints, feedback, and conceptual models. The "bible of UX" for creating intuitive, discoverable products.

About the author: Don Norman, PhD is co-founder of the Nielsen Norman Group and coined the term "user experience" while at Apple. "The Design of Everyday Things" (originally 1988, revised 2013) is considered the most influential design book ever written and is required reading in virtually every design program worldwide.

Use when you need to:

Design affordances and signifiers into interfaces
Analyze why products are confusing (conceptual model mismatch)
Apply constraints to prevent errors
Design clear feedback mechanisms
Bridge gulfs of execution and evaluation
Understand why users make errors and design fault-tolerant systems

Example prompts:

"Audit this form for missing affordances and signifiers. Use design-everyday-things skill."
"Why do users keep making this error? Analyze using Norman's error types. Use design-everyday-things skill."
"Walk through the seven stages of action for this checkout flow. Use design-everyday-things skill."
"What constraints can we add to prevent this mistake? Use design-everyday-things skill."

predictable-revenue

Outbound sales process and Cold Calling 2.0 methodology. Build a scalable sales machine with role specialization (SDR/AE/CSM) and predictable pipeline generation.

About the author: Aaron Ross built the outbound sales process at Salesforce.com that added $100M+ in recurring revenue. "Predictable Revenue" is known as "The Bible of Outbound Sales" and has influenced an entire generation of SaaS sales organizations.

Use when you need to:

Build a scalable outbound sales process
Implement Cold Calling 2.0 email sequences
Structure sales team roles (SDR/AE/CSM)
Design lead qualification frameworks
Scale B2B SaaS sales predictably
Calculate pipeline math and capacity planning

Example prompts:

"Design a Cold Calling 2.0 email sequence for our B2B SaaS product. Use predictable-revenue skill."
"Calculate pipeline math: how many SDRs do we need to hit $2M ARR? Use predictable-revenue skill."
"Create an ANUM qualification framework for our sales team. Use predictable-revenue skill."
"Structure our sales team: when should we hire SDRs vs. AEs? Use predictable-revenue skill."

made-to-stick

SUCCESs framework for creating memorable, impactful messaging. Make ideas stick using Simple, Unexpected, Concrete, Credible, Emotional, Stories principles.

About the authors: Chip Heath is a professor at Stanford Graduate School of Business, and Dan Heath is a senior fellow at Duke University's CASE center. "Made to Stick" spent over 2 years on the New York Times bestseller list. The SUCCESs framework is used by educators, marketers, nonprofits, and product teams worldwide.

Use when you need to:

Make product messaging more memorable
Write sticky taglines and value propositions
Create compelling product demos and presentations
Design memorable onboarding experiences
Craft internal communications that stick
Diagnose why messaging isn't resonating

Example prompts:

"Score this landing page copy on the SUCCESs framework. Use made-to-stick skill."
"Rewrite this value proposition to be stickier. Use made-to-stick skill."
"Our product demo is forgettable. Make it surprising and concrete. Use made-to-stick skill."
"Create a Commander's Intent for our product's core message. Use made-to-stick skill."

drive-motivation

Intrinsic motivation science: Autonomy, Mastery, Purpose (AMP). Design products, features, and teams that tap into what truly motivates people — replacing carrot-and-stick with lasting engagement.

About the author: Daniel H. Pink is the author of seven books including four New York Times bestsellers. "Drive" has been translated into over 40 languages and fundamentally changed how organizations think about motivation. Pink's TED Talk on the science of motivation has over 45 million views.

Use when you need to:

Design features that leverage intrinsic motivation
Create progress systems that support mastery
Craft purpose-driven messaging and missions
Audit if product mechanics undermine autonomy
Design team structures and incentives with AMP principles
Understand why gamification fails
Replace carrot-and-stick approaches with intrinsic motivation

Example prompts:

"Audit our gamification system—is it intrinsic or extrinsic motivation? Use drive-motivation skill."
"How can we add mastery progression to our learning platform? Use drive-motivation skill."
"Our users disengage after the first week. Diagnose using AMP. Use drive-motivation skill."
"Design team incentives that support autonomy instead of controlling behavior. Use drive-motivation skill."

hundred-million-offers

Grand Slam Offer creation framework for building offers so good people feel stupid saying no. Covers the Value Equation, value-based pricing, bonus stacking, guarantees, scarcity, urgency, and the MAGIC naming formula.

About the author: Alex Hormozi is an entrepreneur, investor, and author who has built and scaled multiple businesses generating over $100M in revenue. He is the founder of Acquisition.com, a portfolio of companies that generates over $200M per year. Hormozi's companies span SaaS, brick-and-mortar, e-commerce, and service businesses. "$100M Offers: How To Make Offers So Good People Feel Stupid Saying No" became a Wall Street Journal bestseller and has helped thousands of entrepreneurs restructure their pricing and packaging. His follow-up, $100M Leads, covers customer acquisition.

Use when you need to:

Create an irresistible offer using the Value Equation
Design Grand Slam Offers with bonuses, guarantees, and scarcity
Find your starving crowd and ideal market
Implement value-based pricing with a 10:1 value-to-price ratio
Stack bonuses that multiply perceived value
Design risk-reversing guarantees
Apply ethical scarcity and urgency
Name your offer using the MAGIC formula

Example prompts:

"Redesign our SaaS pricing using the Value Equation. Use hundred-million-offers skill."
"Create a Grand Slam Offer for our coaching program with bonuses and guarantees. Use hundred-million-offers skill."
"What bonuses should we stack to increase perceived value of our $997 course? Use hundred-million-offers skill."
"Name our new offer using the MAGIC formula. Use hundred-million-offers skill."
"Audit our current offer—where is it losing value on the Value Equation? Use hundred-million-offers skill."

obviously-awesome

Product positioning framework for defining how your product wins in customers' minds. Covers competitive alternatives, unique attributes, value mapping, target customers, and market category selection.

About the author: April Dunford is the world's leading authority on product positioning. She is a consultant, speaker, and author who has launched 16 products across her career at companies including IBM, Nortel, and Siebel Systems. Dunford has advised hundreds of companies—from startups to Fortune 500—on positioning strategy. "Obviously Awesome: How to Nail Product Positioning so Customers Get It, Buy It, Love It" is the definitive guide to product positioning, used by product teams, marketers, and founders worldwide. Her follow-up, Sales Pitch, extends the positioning framework into sales conversations.

Use when you need to:

Define what makes your product different from competitive alternatives
Identify your unique attributes and map them to customer value
Find your best-fit target customers
Choose the right market category (existing, subcategory, or new)
Create a positioning canvas for team alignment
Run a team positioning workshop
Diagnose why your product messaging isn't resonating

Example prompts:

"Help us identify the real competitive alternatives for our project management tool. Use obviously-awesome skill."
"Map our unique attributes to customer value themes using the 'So what?' test. Use obviously-awesome skill."
"Should we position in an existing category, create a subcategory, or define a new one? Use obviously-awesome skill."
"Create a positioning canvas for our B2B analytics product. Use obviously-awesome skill."
"Facilitate a positioning exercise for our team. Use obviously-awesome skill."

contagious

Word-of-mouth and virality framework using the STEPPS model (Social Currency, Triggers, Emotion, Public, Practical Value, Stories). Engineer sharing into your products, content, and campaigns.

About the author: Jonah Berger is a marketing professor at the Wharton School at the University of Pennsylvania. His research on social influence, word of mouth, and viral marketing has been published in top academic journals and popular outlets. "Contagious: Why Things Catch On" became a New York Times and Wall Street Journal bestseller and has been translated into over 35 languages. Berger has consulted for companies including Google, Apple, Nike, and the Gates Foundation on making products and ideas spread.

Use when you need to:

Engineer word-of-mouth for product launches
Design features that people naturally share
Create content that goes viral
Build social currency into your product
Design environmental triggers that keep your brand top-of-mind
Craft high-arousal emotional content
Make your product publicly visible and imitable

Example prompts:

"Audit our product launch plan using the STEPPS framework. Which principles are we missing? Use contagious skill."
"How can we build social currency into our fitness app so users brag about it? Use contagious skill."
"Design environmental triggers that link our productivity tool to daily habits. Use contagious skill."
"Is our content high-arousal or low-arousal? Audit for shareability. Use contagious skill."
"Create a Trojan Horse story for our brand that people can't retell without mentioning us. Use contagious skill."

one-page-marketing

Complete end-to-end marketing plan on a single page using Allan Dib's 9-square grid. Covers the full customer journey from prospect to raving fan across three phases: Before (target market, message, media), During (capture, nurture, convert), and After (experience, lifetime value, referrals).

About the author: Allan Dib is a serial entrepreneur, rebellious marketer, and technology expert who has started, grown, and successfully exited multiple businesses in various industries. He is the founder of Successwise, a business coaching and education company. "The 1-Page Marketing Plan: Get New Customers, Make More Money, And Stand Out From The Crowd" is an international bestseller that has been translated into numerous languages and has helped hundreds of thousands of business owners create a simple, actionable marketing plan. His follow-up, Lean Marketing, applies lean principles to marketing execution.

Use when you need to:

Create a complete marketing plan from scratch
Define your target market using the PVP Index
Craft a compelling USP and messaging
Choose the right advertising media and channels
Design lead capture systems and magnets
Build lead nurture email sequences
Optimize sales conversion
Create world-class customer experiences
Increase customer lifetime value
Build referral and advocacy systems

Example prompts:

"Create a 1-page marketing plan for our B2B SaaS product. Use one-page-marketing skill."
"Help me define my target market using the PVP Index. Use one-page-marketing skill."
"Design a lead magnet and capture system for our consulting firm. Use one-page-marketing skill."
"What's our ascension model? Map the customer journey from first touch to premium tier. Use one-page-marketing skill."
"Build a referral system that generates word-of-mouth consistently. Use one-page-marketing skill."

mom-test

Customer interview framework that teaches you to talk about customers' lives instead of your idea. The three rules: talk about their life not your idea, ask about specifics in the past, and talk less.

About the author: Rob Fitzpatrick is an entrepreneur, author, and educator. "The Mom Test" has become the go-to guide for customer development conversations and is used by accelerators, VCs, and startup programs worldwide.

Use when you need to:

Write customer interview questions that don't lead
Validate a business idea without pitching
Identify if users are giving you compliments instead of commitments
Process and share learnings from customer conversations
Distinguish real demand from polite encouragement

Example prompts:

"Help me write interview questions for our B2B SaaS idea without leading the witness. Use mom-test skill."
"I keep hearing 'that's a great idea' but nobody buys. Diagnose my conversations. Use mom-test skill."
"What commitment should I ask for at the end of this customer call? Use mom-test skill."

inspired-product

Build empowered product teams using discovery and delivery dual-track. Replace feature factories with teams that discover solutions customers love, that work for the business.

About the author: Marty Cagan is the founder of Silicon Valley Product Group (SVPG) and a former product executive at eBay, Netscape, and HP. "Inspired" is considered essential reading for product managers worldwide.

Use when you need to:

Structure empowered product teams (PM, designer, engineers)
Run product discovery to reduce risk before building
Create compelling product vision and strategy
Manage stakeholders without surrendering team empowerment
Assess product opportunities systematically

Example prompts:

"Are we a feature factory? Diagnose our product team structure. Use inspired-product skill."
"Create an opportunity assessment for this new feature idea. Use inspired-product skill."
"Help me write a product vision for our B2B platform. Use inspired-product skill."

lean-ux

Hypothesis-driven UX design that replaces heavy deliverables with rapid experiments and collaborative sketching. Outcomes over outputs.

About the authors: Jeff Gothelf and Josh Seiden are consultants and coaches specializing in Lean and Agile product development. "Lean UX" bridges Lean Startup, design thinking, and Agile development.

Use when you need to:

Write UX hypothesis statements
Design minimum viable experiments for UX ideas
Integrate UX work into Agile sprints
Run collaborative design sessions with cross-functional teams
Measure UX outcomes instead of outputs

Example prompts:

"Write a hypothesis statement for our new onboarding flow. Use lean-ux skill."
"What's the minimum viable experiment to test this design idea? Use lean-ux skill."
"How do I fit UX discovery into our 2-week sprints? Use lean-ux skill."

continuous-discovery

Build a weekly cadence of customer touchpoints using Opportunity Solution Trees, assumption mapping, and interview snapshots.

About the author: Teresa Torres is an internationally acclaimed author, speaker, and coach who helps product teams adopt continuous discovery practices. "Continuous Discovery Habits" is the definitive guide to making discovery a regular team habit.

Use when you need to:

Build an Opportunity Solution Tree for your product
Create a weekly interview cadence
Map and prioritize assumptions by risk
Synthesize customer interviews into actionable insights
Prioritize which opportunities to pursue

Example prompts:

"Help me build an Opportunity Solution Tree for our retention OKR. Use continuous-discovery skill."
"How do I set up a weekly interview cadence with limited resources? Use continuous-discovery skill."
"Map our riskiest assumptions for this feature. Use continuous-discovery skill."

microinteractions

Design the small details — triggers, rules, feedback, loops and modes — that separate good products from great ones.

About the author: Dan Saffer is a product designer and author who has worked at Smart Design, Motorola, and Twitter. "Microinteractions" focuses on the tiny, crucial design details that make products delightful.

Use when you need to:

Design button feedback, loading states, or toggle interactions
Create signature moments that define brand identity
Audit interactions for missing feedback or unclear states
Design progressive loops that evolve over time
Reduce and simplify complex interactions

Example prompts:

"Design the microinteraction for our save button — trigger, rules, feedback, and loop. Use microinteractions skill."
"Audit this form submission flow for missing feedback. Use microinteractions skill."
"Create a signature loading animation that reflects our brand. Use microinteractions skill."

clean-code

Write readable, maintainable code through disciplined naming, small functions, and clean error handling. Code is read far more than it is written.

About the author: Robert C. Martin (Uncle Bob) is a software engineer, author, and one of the signatories of the Agile Manifesto. "Clean Code" has become the standard reference for code quality and craftsmanship.

Use when you need to:

Review code for naming, function size, and readability
Identify and fix code smells
Write clean error handling
Apply the Single Responsibility Principle
Write clean, readable unit tests

Example prompts:

"Review this function for clean code principles. Use clean-code skill."
"This class has 500 lines. Help me identify the code smells. Use clean-code skill."
"Rewrite this error handling to follow clean code principles. Use clean-code skill."

refactoring-patterns

Apply named refactoring transformations to improve code structure without changing behavior. Smell-driven, test-guarded, safe transformations.

About the author: Martin Fowler is an author, speaker, and Chief Scientist at Thoughtworks. "Refactoring" (2nd edition) is the definitive catalog of refactoring techniques.

Use when you need to:

Refactor code safely with named transformations
Identify code smells and choose the right refactoring
Simplify complex conditional logic
Extract methods, classes, or modules
Plan a safe refactoring workflow with tests

Example prompts:

"This method has nested conditionals. Which refactoring pattern should I apply? Use refactoring-patterns skill."
"Identify the code smells in this class and suggest refactorings. Use refactoring-patterns skill."
"Help me plan a safe refactoring sequence for this module. Use refactoring-patterns skill."

software-design-philosophy

Manage software complexity through deep modules, information hiding, and strategic programming. Complexity is the root cause of most software problems.

About the author: John Ousterhout is a professor of computer science at Stanford University and creator of Tcl/Tk. "A Philosophy of Software Design" distills decades of teaching and practice into actionable design principles.

Use when you need to:

Evaluate whether a module is too shallow or deep
Detect and fix information leakage between modules
Choose between general-purpose and special-purpose interfaces
Write comments that serve as design documentation
Decide between strategic and tactical programming approaches

Example prompts:

"Is this class deep or shallow? Evaluate the interface-to-functionality ratio. Use software-design-philosophy skill."
"This API feels too complex. How do I simplify it? Use software-design-philosophy skill."
"Are we programming strategically or tactically? Audit our approach. Use software-design-philosophy skill."

pragmatic-programmer

Meta-principles of software craftsmanship: DRY, orthogonality, tracer bullets, and design by contract. Think about your work as you work.

About the authors: Andrew Hunt and David Thomas are co-founders of the Pragmatic Bookshelf and signatories of the Agile Manifesto. "The Pragmatic Programmer" (20th Anniversary Edition) remains one of the most influential software development books ever written.

Use when you need to:

Apply DRY principle correctly (knowledge, not code)
Design orthogonal systems with minimal coupling
Choose between tracer bullets and prototypes
Apply design by contract and assertive programming
Estimate software projects with ranges

Example prompts:

"Is this duplication a DRY violation or coincidental? Use pragmatic-programmer skill."
"Should I build a tracer bullet or a prototype for this feature? Use pragmatic-programmer skill."
"How do I estimate this project? Use pragmatic-programmer skill."

domain-driven-design

Model software around the business domain using bounded contexts, aggregates, and ubiquitous language. The structure of the code should reflect the structure of the domain.

About the author: Eric Evans is a software design consultant and the originator of Domain-Driven Design. "Domain-Driven Design" fundamentally changed how the industry thinks about the relationship between code and business domains.

Use when you need to:

Define bounded context boundaries for a system
Choose between entities, value objects, and aggregates
Build a ubiquitous language with domain experts
Design domain events for integration between contexts
Identify your core domain vs supporting subdomains

Example prompts:

"Help me define bounded contexts for our e-commerce platform. Use domain-driven-design skill."
"Should this be an entity or a value object? Use domain-driven-design skill."
"Design the aggregate boundaries for our order management system. Use domain-driven-design skill."

ddia-systems

Design data systems by understanding storage engines, replication, partitioning, transactions, and consistency models. Fundamentals of data-intensive application design.

About the author: Martin Kleppmann is a researcher in distributed systems at the University of Cambridge. "Designing Data-Intensive Applications" is widely regarded as the best technical book on distributed data systems.

Use when you need to:

Choose between database types (relational, document, graph)
Design replication and partitioning strategies
Understand consistency vs availability tradeoffs
Choose appropriate isolation levels for transactions
Design batch or stream processing pipelines

Example prompts:

"Should we use a relational or document database for this use case? Use ddia-systems skill."
"How should we partition this table? Use ddia-systems skill."
"What consistency guarantees do we need? Use ddia-systems skill."

system-design

Design scalable distributed systems using structured approaches for load balancing, caching, database scaling, and message queues.

About the author: Alex Xu is the author of the bestselling System Design Interview series. "System Design Interview" (Volumes 1 & 2) has helped millions of engineers prepare for system design challenges.

Use when you need to:

Design a system from requirements to architecture
Do back-of-the-envelope estimation for capacity
Choose the right caching strategy
Design common systems (URL shortener, rate limiter, chat, etc.)
Scale database reads and writes

Example prompts:

"Design a URL shortener service. Walk me through the four-step process. Use system-design skill."
"How many servers do we need to handle 10M daily active users? Use system-design skill."
"Design a rate limiter for our API. Use system-design skill."

clean-architecture

Structure software around the Dependency Rule: source code dependencies point inward from frameworks to use cases to entities.

About the author: Robert C. Martin (Uncle Bob) is a legendary software engineer and author of the Clean series. "Clean Architecture" provides the architectural counterpart to Clean Code.

Use when you need to:

Structure an application with proper dependency direction
Separate business rules from frameworks and infrastructure
Apply SOLID principles at the architecture level
Design component boundaries and their interactions
Keep frameworks at arm's length

Example prompts:

"Review our architecture — do dependencies point inward? Use clean-architecture skill."
"How do I structure this app so the database is a detail, not a dependency? Use clean-architecture skill."
"Apply the Dependency Rule to our microservice. Use clean-architecture skill."

release-it

Build production-ready systems with stability patterns: circuit breakers, bulkheads, timeouts, and retry logic. Design for the real world.

About the author: Michael Nygard is an architect and author who has designed and operated some of the largest transactional systems in the world. "Release It!" (2nd edition) is the definitive guide to building production-ready software.

Use when you need to:

Diagnose cascading failure patterns
Implement circuit breakers, bulkheads, or timeouts
Plan capacity and availability
Choose deployment strategies (blue-green, canary, rolling)
Design health checks and observability

Example prompts:

"We had a cascading failure yesterday. Diagnose the anti-patterns. Use release-it skill."
"Implement a circuit breaker for this external API call. Use release-it skill."
"Design health checks for our microservices. Use release-it skill."

high-perf-browser

Optimize web performance through network protocols, resource loading, and browser rendering internals.

About the author: Ilya Grigorik is a web performance engineer, previously at Google. "High Performance Browser Networking" is the definitive guide to understanding network protocols and browser performance.

Use when you need to:

Optimize Core Web Vitals (LCP, INP, CLS)
Reduce page load times and TTFB
Choose between HTTP/2 and HTTP/3
Implement effective caching strategies
Choose between WebSocket, SSE, and long polling for real-time features

Example prompts:

"Our LCP is 4.5 seconds. Diagnose and fix it. Use high-perf-browser skill."
"Should we use WebSocket or SSE for our real-time feature? Use high-perf-browser skill."
"Audit our caching strategy for static assets. Use high-perf-browser skill."

37signals-way

Build lean, opinionated products using the 37signals philosophy: build less, shape work before building, ship in fixed six-week cycles with small autonomous teams, and say no to almost everything by default.

About the authors: Jason Fried is the co-founder and CEO of 37signals (Basecamp, HEY), a prominent advocate for calm companies and product simplicity. David Heinemeier Hansson (DHH) is the co-founder and CTO of 37signals and creator of Ruby on Rails. Together they wrote "Getting Real" and "Rework". Ryan Singer is the former Head of Strategy at 37signals and author of "Shape Up".

Use when you need to:

Shape work before giving it to a team (breadboarding, fat marker sketches, pitches)
Run fixed-time, variable-scope development cycles (six-week bets)
Cut features and scope ruthlessly to ship on time
Structure small autonomous teams (3-person teams, no PMs)
Replace backlogs and roadmaps with a betting table
Track progress with hill charts instead of burndowns or standups

Example prompts:

"We have a 200-item backlog and nothing ships on time. Help us switch to Shape Up cycles. Use 37signals-way skill."
"Shape this feature idea into a pitch with appetite, breadboard, rabbit holes, and no-gos. Use 37signals-way skill."
"Our product has too many features and users are overwhelmed. Help us apply the 'build less' philosophy. Use 37signals-way skill."
"Review our team process and score it against 37signals principles. Use 37signals-way skill."

Learn More: The Skills Ecosystem

Want to go deeper with skills — how they work, how to create your own, and what's available across the community?

The Skills Ecosystem on Developer Toolkit covers everything you need:

How skills work — persistent, markdown-based instructions that load automatically at the start of every AI coding session
The skills marketplace — browse 200+ community skills across categories at skills.sh
Creating your own skills — write custom skills encoding your team's conventions, framework patterns, and workflow instructions
Cross-tool support — skills work across Claude Code, Cursor, and Codex

Developer Toolkit is a comprehensive learning platform for mastering AI-assisted coding, with 350+ tutorials, 80+ copy-paste recipes, and weekly updates tracking tool evolution.

Copyright & Disclaimer

The methodologies and frameworks referenced in these skills are the intellectual property of their respective authors and publishers. All copyrights belong to:

Jobs to Be Done: Clayton M. Christensen, Taddy Hall, Karen Dillon, David S. Duncan
Making Websites Win: Karl Blanks, Ben Jesson (Conversion Rate Experts)
Refactoring UI: Adam Wathan, Steve Schoger
Human Interface Guidelines: Apple Inc.
Scorecard Marketing: Daniel Priestley, Glen Carlson
Building a StoryBrand: Donald Miller
Hooked: Nir Eyal
Tiny Habits: BJ Fogg
Don't Make Me Think: Steve Krug
10 Usability Heuristics: Jakob Nielsen (Nielsen Norman Group)
On Web Typography: Jason Santa Maria
Top Design: Techniques inspired by Locomotive, Studio Freight, AREA 17, Active Theory, Hello Monday, Dogstudio, Tonik, Instrument, Resn
Never Split the Difference: Chris Voss, Tahl Raz
Influence: The Psychology of Persuasion: Robert B. Cialdini
The Lean Startup: Eric Ries
Sprint: Jake Knapp, John Zeratsky, Braden Kowitz
Crossing the Chasm: Geoffrey A. Moore
Blue Ocean Strategy: W. Chan Kim, Renée Mauborgne
Traction: Gino Wickman
The Design of Everyday Things: Don Norman
Predictable Revenue: Aaron Ross, Marylou Tyler
Made to Stick: Chip Heath, Dan Heath
Drive: Daniel H. Pink
$100M Offers: Alex Hormozi
Obviously Awesome: April Dunford
Contagious: Jonah Berger
The 1-Page Marketing Plan: Allan Dib
The Mom Test: Rob Fitzpatrick
Inspired: Marty Cagan
Lean UX: Jeff Gothelf, Josh Seiden
Continuous Discovery Habits: Teresa Torres
Microinteractions: Dan Saffer
Clean Code: Robert C. Martin
Refactoring: Martin Fowler
A Philosophy of Software Design: John Ousterhout
The Pragmatic Programmer: Andrew Hunt, David Thomas
Domain-Driven Design: Eric Evans
Designing Data-Intensive Applications: Martin Kleppmann
System Design Interview: Alex Xu
Clean Architecture: Robert C. Martin
Release It!: Michael Nygard
High Performance Browser Networking: Ilya Grigorik
Getting Real: Jason Fried, David Heinemeier Hansson
Rework: Jason Fried, David Heinemeier Hansson
Shape Up: Ryan Singer

These skills were created without directly copying or reproducing content from the original books or materials. They are based on:

Publicly available information about the methodologies
General knowledge embedded in large language models
Common industry practices and terminology

We encourage users to purchase and read the original books for the complete, authoritative treatment of each methodology. The skills in this repository are intended as practical aids, not replacements for the source materials.