orbital-mechanics
Use when computing orbits, planning maneuvers, propagating trajectories, or analyzing orbital perturbations for spacecraft or celestial bodies. Use when "orbit, trajectory, maneuver, delta-v, Hohmann, Keplerian, perturbation, J2, TLE, orbital elements, semi-major axis, eccentricity, inclination, RAAN, spacecraft propagation, Lambert solver, interplanetary, " mentioned.
packaging-print-production
I am a veteran print production specialist with 15+ years in tabletop game manufacturing. I've shepherded hundreds of games from digital files to retail-ready products, working with manufacturers from The Game Crafter to Panda GM to Cartamundi. My expertise spans the entire production pipeline: color management, dieline creation, paper selection, finishing techniques, component nesting, insert design, and the critical art of the unboxing experience. I've learned the hard way about RGB-to-CMYK disasters, registration drift, humidity warp, and minimum font sizes that become illegible smudges. I know the difference between 280gsm blue-core and 320gsm black-core card stock by feel. I can tell you why your rich black needs to be C60-M40-Y40-K100, not just K100. I understand why your box needs 15mm clearance on each dimension, and why that gorgeous neon green in your design will become a muddy olive in print. Use when "print my game, packaging design, prepare files for print, dieline, print specifications, board game manufacturing, card game printing, box design, bleed and safe area, CMYK conversion, paper stock, card finish, foil stamping, embossing, unboxing experience, thermoform insert, punchboard design, component manufacturing, Panda GM, Game Crafter, Cartamundi, print-production, packaging, manufacturing, board-games, card-games, cmyk, dieline, die-cutting, offset-printing, tabletop" mentioned.
patent-drafting
Use when drafting patent applications, writing claims, analyzing prior art, or responding to office actions - covers USPTO practice, claim strategies, and specification requirementsUse when ", " mentioned.
performance-hunter
Performance optimization specialist for profiling, caching, and latency optimizationUse when "performance, latency, slow query, profiling, caching, optimization, N+1, connection pool, p99, performance, profiling, caching, latency, optimization, async, database, load-testing, ml-memory" mentioned.
performance-optimization
Expert at diagnosing and fixing performance bottlenecks across the stack. Covers Core Web Vitals, database optimization, caching strategies, bundle optimization, and performance monitoring. Knows when to measure vs optimize. Use when "slow page load, performance optimization, core web vitals, bundle size, lighthouse score, database slow, memory leak, optimize performance, speed up, reduce load time, performance, optimization, core-web-vitals, caching, profiling, bundle-size, database" mentioned.
performance-thinker
Performance optimization mindset - knowing when to optimize, how to measure, where bottlenecks hide, and when "fast enough" is the right answerUse when "slow, performance, optimize, profiling, benchmark, latency, throughput, cache, n+1, bottleneck, memory leak, too slow, speed up, response time, performance, optimization, profiling, caching, latency, throughput, big-o, benchmarking" mentioned.
perpetuals-trading
Comprehensive expertise in decentralized perpetual futures protocols, including GMX, dYdX, Hyperliquid, and similar platforms. Covers funding rate mechanics, liquidation engines, position management, oracle integration, and protocol risk management. Use when "perpetual futures, perps, funding rate, liquidation, GMX, dYdX, Hyperliquid, leverage trading, margin trading, long position, short position, mark price, index price, open interest, basis trading, " mentioned.
personal-tool-builder
Expert in building custom tools that solve your own problems first. The best products often start as personal tools - scratch your own itch, build for yourself, then discover others have the same itch. Covers rapid prototyping, local-first apps, CLI tools, scripts that grow into products, and the art of dogfooding. Use when "build a tool, personal tool, scratch my itch, solve my problem, CLI tool, local app, automate my, build for myself, " mentioned.
pg-boss
pg-boss expert for PostgreSQL-backed job queues with exactly-once delivery, perfect for applications already using Postgres (Supabase, Neon, etc.). Use when "pg-boss, postgres queue, postgresql job, supabase background job, neon job queue, postgres scheduling, database job queue, pg-boss, postgresql, job-queue, background-jobs, supabase, neon, exactly-once, scheduling" mentioned.
physics-simulation
Patterns for physics-based simulation including numerical integration, rigid body dynamics, fluid simulation, finite element methods, and multi-physics coupling. Covers accuracy, stability, and performance. Use when ", " mentioned.
pitch-narrative
Expert in crafting pitch narratives that move people to action - investor pitches, sales presentations, partnership proposals, and team rallying stories. Covers narrative structure, emotional resonance, data integration, and delivery. Knows the difference between information transfer and persuasion, and how to build narratives that stick. Use when "pitch deck, investor pitch, pitch narrative, sales pitch, presentation story, persuade, pitch structure, compelling story, " mentioned.
pivot-patterns
Most successful startups pivoted. Instagram was a check-in app. Slack was a game. YouTube was a dating site. The ability to recognize when to pivot and execute the pivot without losing momentum is a core founder skill. This skill covers pivot signals, types of pivots, preserving momentum during change, and communicating pivots to investors and team. Use when "keywords, contexts, " mentioned.
pixel-art-sprites
Specialist in pixel art creation, sprite animation, and limited palette designUse when "pixel art, sprites, sprite sheet, sprite animation, retro game art, 8-bit, 16-bit, character sprites, tile art, pixel animation, aseprite, pixel-art, sprites, animation, game-art, retro, indie-games, 2d-graphics, sprite-sheets" mentioned.
pixel-art
Deep pixel art expertise covering fundamentals, limited palettes, dithering patterns, subpixel animation, tile design, retro hardware constraints, and HD-2D hybrid techniques. Knowledge Claude wouldn't normally have from indie masters like Pedro Medeiros (saint11). Use when "pixel art, sprite art, dithering, limited palette, subpixel animation, tileset, autotile, pillow shading, selective outline, selout, hue shifting, color ramp, NES style, SNES style, HD-2D, Aseprite, retro game art, 8-bit, 16-bit, pixel-art, sprites, animation, retro, indie-games, dithering, palettes, tiles, subpixel, aseprite, NES, SNES, GBA, HD-2D" mentioned.
plaid-fintech
Expert patterns for Plaid API integration including Link token flows, transactions sync, identity verification, Auth for ACH, balance checks, webhook handling, and fintech compliance best practices. Use when "plaid, bank account linking, bank connection, ach, account aggregation, bank transactions, open banking, fintech, identity verification banking, plaid, fintech, banking, payments, ach, transactions, identity" mentioned.
player-onboarding
First Time User Experience (FTUE) design that teaches through play, hooks players in 30 seconds, and retains them for lifeUse when "tutorial, onboarding, teach player, first time user, FTUE, new player experience, how to teach, teaching mechanics, tutorial level, intro sequence, player retention, drop-off, skip tutorial, contextual hints, help system, onboarding, tutorial, ftue, first-time-user-experience, player-retention, teaching, learning, progressive-disclosure, difficulty-curve, new-player-experience, hooks, engagement" mentioned.
portfolio-optimization
Use when constructing portfolios, implementing mean-variance optimization, factor models, risk parity, or Black-Litterman allocation - covers modern portfolio theory and practical enhancementsUse when ", " mentioned.
postgres-wizard
PostgreSQL internals specialist for query optimization, indexing, partitioning, and advanced featuresUse when "postgresql, postgres, slow query, index, explain analyze, vacuum, connection pool, pgbouncer, partitioning, replication, postgresql, postgres, database, sql, indexing, optimization, partitioning, vacuum, explain, pgvector, ml-memory" mentioned.
prediction-markets
Comprehensive expertise in decentralized prediction markets, including Polymarket-style platforms, UMA Optimistic Oracle integration, Conditional Tokens Framework (CTF), market making, resolution mechanisms, and regulatory considerations. Use when "prediction market, Polymarket, betting market, outcome tokens, resolution oracle, UMA oracle, conditional tokens, binary market, outcome prediction, information market, " mentioned.
pricing-strategy
Pricing is the most powerful lever you're not pulling. A 1% price increase typically yields 8-11% profit improvement - more than any other lever. Yet most founders set prices once and forget them, leaving massive value on the table or killing their business with wrong pricing. This skill covers pricing models, psychology, experimentation, and the art of capturing the value you create. From early-stage "just charge something" to enterprise negotiation and usage-based sophistication. Use when "pricing, how much to charge, pricing model, freemium, free trial, pricing tiers, enterprise pricing, usage-based, per seat, discount, monetization, when to charge, price increase, packaging, value pricing, pricing, monetization, strategy, revenue, value, freemium, enterprise, SaaS" mentioned.
prisma
Expert in Prisma - the TypeScript ORM for type-safe database access. Covers schema design, migrations, Prisma Client queries, relations, edge deployment, and performance optimization. Essential for building reliable database layers in TypeScript applications. Use when "prisma, orm, database typescript, prisma client, prisma migrate, type-safe database, prisma, orm, database, typescript, postgresql, migrations, type-safe" mentioned.
privacy-guardian
Security and privacy specialist for differential privacy, encryption, and complianceUse when "privacy, encryption, differential privacy, PII, GDPR, CCPA, access control, audit trail, data retention, privacy, security, encryption, differential-privacy, gdpr, ccpa, pii, opendp, ml-memory" mentioned.
procedural-generation
Procedural Content Generation (PCG) is the art of creating infinite from finite. The challenge isn't making random content - it's making content that feels designed. This skill covers noise functions, grammar-based generation, constraint satisfaction, Wave Function Collapse, L-systems, and the crucial "generate then curate" workflow that separates shipping games from academic papers. Core insight: The best PCG systems are heavily constrained. Pure randomness produces noise. Designer intent plus controlled chaos produces memorable experiences. Spelunky's levels feel handcrafted because Derek Yu spent years defining what "valid" means. Use when "procedural generation, procedural content, pcg, noise function, perlin noise, simplex noise, worley noise, voronoi noise, terrain generation, dungeon generation, cave generation, wave function collapse, wfc, l-system, lindenmayer, markov chain, roguelike level, infinite world, minecraft-style, seeded random, cellular automata, bsp dungeon, fractal, fbm, octaves, generate level, random dungeon, no man's sky, spelunky generation, dwarf fortress, randomized content, procedural, generation, pcg, noise, terrain, dungeon, roguelike, infinite, world, algorithm, wfc, l-systems, markov, cellular-automata, bsp" mentioned.
product-discovery
Expert in product discovery - the continuous process of understanding what customers need and what solutions will work. Covers customer research, problem validation, solution testing, opportunity assessment, and reducing risk before committing resources. Knows the difference between discovery and delivery, and how to maintain continuous discovery habits. Use when "product discovery, customer research, problem validation, what to build, opportunity, user research, customer interview, " mentioned.
product-led-growth
Expert in product-led growth (PLG) - the go-to-market strategy where the product itself drives customer acquisition, activation, conversion, and expansion. Covers freemium models, self-serve funnels, activation optimization, viral mechanics, and the organizational changes needed for PLG. Knows when PLG works and when it doesn't, and how to blend PLG with sales-led motions. Use when "product-led, PLG, freemium, self-serve, product qualified lead, activation rate, time to value, bottom-up growth, " mentioned.
product-management
World-class product management expertise combining the user-obsession of Marty Cagan's empowered product teams, the strategic clarity of Shreyas Doshi, and the execution discipline of the best Silicon Valley PMs. Product management is where strategy meets execution, where user problems meet business outcomes. Great PMs don't just manage products—they discover what's worth building, align stakeholders around why, and lead cross-functional teams to deliver outcomes. The best PMs are truth-seekers who balance user value, business value, and feasibility while maintaining the vision that keeps teams inspired. Use when "product management, product roadmap, feature prioritization, user stories, acceptance criteria, PRD, product requirements, sprint planning, backlog, product discovery, feature spec, product metrics, OKRs, release planning, stakeholder alignment, product decision, product, roadmap, prioritization, requirements, discovery, execution, stakeholders, metrics" mentioned.
product-market-fit
Expert in product-market fit - the condition where a product satisfies a strong market demand. Covers PMF definition, measurement, the journey to PMF, and what to do before and after. Knows that PMF is a spectrum not a binary, and how to navigate the search. Use when "product-market fit, PMF, retention, product market fit survey, traction, pull from market, sean ellis, " mentioned.
product-strategy
World-class product strategy expertise combining Marty Cagan's outcome-driven product management, Steve Jobs' product intuition, and modern Silicon Valley best practices. This skill answers the fundamental question: "What should we build and why will it win?" This is not about features or roadmaps. It's about discovering what customers desperately need but can't articulate, and building something 10x better than alternatives. Use when "what should we build, product strategy, product vision, product-market fit, pmf, value proposition, competitive advantage, market positioning, customer discovery, jobs to be done, jtbd, problem worth solving, mvp scope, product differentiation, why will this win, product principles, what makes this different, market opportunity, product, strategy, vision, pmf, positioning, discovery, validation, prioritization" mentioned.
productivity-ai-tools
Master the AI tools that handle administrative work and boost personal productivity. From meeting notes to email management, get more done with less effort. Use when "meeting notes, email management, calendar optimization, productivity, time management, productivity, meetings, email, calendar, personal" mentioned.
progression-systems
Expert in designing compelling progression systems that create the "one more turn" hook while respecting player time. Deep knowledge of XP mathematics, skill tree topology, reward pacing psychology, and meta-progression loops. Draws from decades of ARPG evolution (Diablo, Path of Exile), roguelike innovation (Hades, Slay the Spire), and mobile design patterns. Use when "level up system, xp curve, skill tree, progression system, unlock system, prestige system, battle pass, new game plus, loot progression, power curve, meta progression, achievement system, " mentioned.
prompt-caching
Caching strategies for LLM prompts including Anthropic prompt caching, response caching, and CAG (Cache Augmented Generation)Use when "prompt caching, cache prompt, response cache, cag, cache augmented, caching, llm, performance, optimization, cost" mentioned.
prompt-engineer
Expert in designing effective prompts for LLM-powered applications. Masters prompt structure, context management, output formatting, and prompt evaluation. Use when "prompt engineering, system prompt, few-shot, chain of thought, prompt design, LLM prompt, instruction tuning, prompt template, output format, prompts, llm, gpt, claude, system-prompt, few-shot, chain-of-thought, evaluation" mentioned.
prompt-engineering-creative
The meta-skill that powers all other AI tools. Prompt engineering for creative applications is the art and science of communicating with AI models to produce exactly what you envision—in images, video, audio, and text. This isn't just "write better prompts." It's understanding how different models interpret language, how to structure requests for different modalities, how to iterate systematically, and how to build prompt libraries that encode your creative vision. The best prompt engineers have developed intuition for what words trigger what responses in each model. This skill is foundational—it amplifies the effectiveness of every other AI creative skill. Master this, and you master the interface to all AI creation. Use when "prompt, prompting, prompt engineering, better prompts, prompt optimization, how to prompt, prompt strategy, prompt library, prompt template, make AI understand, prompt-engineering, prompting, meta-skill, ai-creative, foundational, optimization, iteration" mentioned.
prompt-injection-defense
Defense techniques against prompt injection attacks including direct injection, indirect injection, and jailbreaks - theUse when "prompt injection, jailbreak prevention, input sanitization, llm security, injection attack, security, prompt-injection, llm, owasp, jailbreak, ai-safety" mentioned.
prompt-to-game
Master the art of "vibe coding" - creating playable games through natural language prompts to AI. Covers effective prompting strategies, framework choices, workflow patterns, and avoiding common pitfalls. From single-prompt prototypes to polished games, this skill bridges imagination and execution. Use when "vibe coding, prompt to game, AI game development, Claude make game, GPT game, natural language coding, describe game, AI generate game, no code game, game jam AI, rapid prototype, build game fast, " mentioned.
protein-structure
Patterns for protein structure prediction using AlphaFold2/ColabFold, structural analysis, model quality assessment, and integration with experimental data. Covers best practices and critical interpretation of prediction confidence metrics. Use when ", " mentioned.
puzzle-design
Crafting puzzles that teach through play, create "aha" moments, and challenge without frustratingUse when "puzzle, puzzle design, puzzle game, puzzle mechanics, difficulty curve, hint system, brain teaser, riddle, logic puzzle, escape room, teaching through play, aha moment, portal puzzle, baba is you, the witness, talos principle, professor layton, puzzles, game-design, level-design, difficulty, teaching, hints, brain-teaser, escape-room, logic, challenge" mentioned.
python-backend
Python dominates backend development for good reason - readable code, massive ecosystem, and frameworks that scale from prototype to production. Django gives you batteries included. FastAPI gives you speed and modern async patterns. This skill covers both frameworks because real projects often need both: Django for admin panels and complex apps, FastAPI for high-performance APIs. The key insight: don't fight the framework. Django's ORM is not SQLAlchemy. FastAPI's Pydantic is not marshmallow. Learn the idioms. 2025 reality: Type hints are mandatory. Async is the default for I/O. Poetry/uv replaced pip for serious projects. If you're not using pyproject.toml, you're living in the past. Use when "python, django, fastapi, flask, pydantic, sqlalchemy, celery, uvicorn, poetry, python api, python backend, python, django, fastapi, flask, pydantic, backend, api, async" mentioned.
python-craftsman
Python excellence specialist for type safety, async patterns, packaging, and idiomatic production codeUse when "python development, type hints, async python, pydantic models, python packaging, mypy errors, python project structure, dependency management, python, type-hints, async, pydantic, packaging, uv, poetry, mypy, ruff, ml-memory" mentioned.
qa-engineering
World-class QA engineering - systematic testing, automation, and the mindset that finds bugs before users doUse when "QA, quality assurance, testing, test automation, e2e tests, integration tests, regression testing, test coverage, playwright, cypress, selenium, test suite, bug report, test strategy, flaky tests, testing, QA, automation, e2e, integration, regression, quality" mentioned.
quantitative-research
World-class systematic trading research - backtesting, alpha generation, factor models, statistical arbitrage. Transform hypotheses into edges. Use when "backtest, alpha, factor model, statistical arbitrage, quant research, systematic trading, mean reversion, momentum strategy, regime detection, walk forward, " mentioned.
queue-workers
Patterns for building reliable background job processing systems. Covers message queues, worker pools, retries, dead letter handling, and async workflow orchestration. Use when ", " mentioned.
rag-engineer
Expert in building Retrieval-Augmented Generation systems. Masters embedding models, vector databases, chunking strategies, and retrieval optimization for LLM applications. Use when "building RAG, vector search, embeddings, semantic search, document retrieval, context retrieval, knowledge base, LLM with documents, chunking strategy, pinecone, weaviate, chromadb, pgvector, rag, embeddings, vector-database, retrieval, semantic-search, llm, ai, langchain, llamaindex" mentioned.
rag-implementation
Retrieval-Augmented Generation patterns including chunking, embeddings, vector stores, and retrieval optimizationUse when "rag, retrieval augmented, vector search, embeddings, semantic search, document qa, rag, retrieval, embeddings, vector, search, llm" mentioned.
rate-limiting
Patterns for implementing rate limiting to protect APIs from abuse, ensure fair usage, and maintain system stability. Covers token bucket, sliding window, distributed rate limiting, and per-user quotas. Use when ", " mentioned.
react-native-specialist
Cross-platform mobile development specialist for React Native, Expo, native modules, and mobile-specific patternsUse when "react native, expo, mobile app, ios app, android app, cross-platform, native module, react navigation, mobile development, react-native, expo, mobile, ios, android, cross-platform, javascript, typescript, native-modules, navigation" mentioned.
react-patterns
Expert knowledge for React hooks, composition, and component patternsUse when "react hook, useEffect, useState, useCallback, useMemo, context, component composition, react performance, re-render, react, hooks, components, state, context, performance, composition" mentioned.
real-time-content
The speed layer of AI-native marketing. This skill covers creating and deploying content in real-time—responding to trends, events, and moments as they happen with AI-generated visuals, video, and copy. Traditional content is planned weeks ahead. Real-time content is created in hours or minutes. AI has collapsed the time from "idea" to "live" from days to seconds. The brands that master real-time content capture moments their competitors miss. This skill combines trend detection, rapid content creation, and instant deployment—the full stack of real-time marketing powered by AI generation. Use when "real-time, trending, moment, reactive, newsjacking, current event, meme, viral moment, rapid, respond to, capitalize on, trending topic, real-time, trending, reactive, rapid, moment-marketing, newsjacking, speed" mentioned.
realtime-engineer
Real-time systems expert for WebSockets, SSE, presence, and live synchronizationUse when "websocket, real-time updates, live collaboration, presence indicator, online status, live cursors, multiplayer, server-sent events, push notifications, collaborative editing, websocket, sse, realtime, presence, collaboration, live-updates, socket.io, pusher, ably, supabase-realtime" mentioned.
redis-specialist
Redis expert for caching, pub/sub, data structures, and distributed systems patternsUse when "redis, caching strategy, cache invalidation, pub/sub, rate limiting, distributed lock, session storage, leaderboard, message queue, upstash, redis, caching, pub-sub, session, rate-limiting, distributed-lock, upstash, elasticache, memorystore" mentioned.
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