Claude Skills by omer-metin

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.

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, ...

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.

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 ...

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.

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.

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 ...

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.

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 g...

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.

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 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...

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.

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.

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.

Patterns for building reliable background job processing systems. Covers message queues, worker pools, retries, dead letter handling, and async workflow orchestration. Use when ", " mentioned.

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.

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.

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.

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.

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.

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 cont...

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 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.

Safe code transformation - changing structure without changing behavior. From Fowler's catalog to legacy code strategies, knowing when and how to improve code without breaking itUse when "refactor, refactoring, clean up, legacy code, code smell, improve this, restructure, technical debt, rewrite, extract, inline, rename, move method, refactoring, legacy-code, code-smells, transformation, incremental, technical-debt, clean-code" mentioned.

Expert in writing, debugging, and explaining regular expressions. Covers readable regex patterns, performance optimization, debugging techniques, and knowing when NOT to use regex. Understands that regex is powerful but often overused. Use when "regex, regular expression, pattern matching, match string, parse text, extract from text, validate format, " mentioned.

Use when implementing RL algorithms, training agents with rewards, or aligning LLMs with human feedback - covers policy gradients, PPO, Q-learning, RLHF, and GRPOUse when ", " mentioned.

Design, model, and optimize renewable energy systems including solar PV, wind power, energy storage, and grid integration. Use when "renewable energy, solar power, solar PV, wind energy, wind turbine, energy storage, battery storage, grid integration, capacity factor, " mentioned.

Master the AI tools that accelerate research and information gathering. From market research to academic analysis, find insights faster and make better decisions. Use when "research, find information, academic papers, market research, competitive intelligence, fact check, research, information, analysis, academic, market-research" mentioned.

World-class character rigging and animation systems expertise - skeleton hierarchies, deformation, FK/IK, facial rigs, weight painting, and game engine integration from someone who has shipped AAA charactersUse when "rig a character, character rigging, skeleton hierarchy, weight painting, skin weights, joint orientation, fk ik, inverse kinematics, forward kinematics, facial rig, blend shapes, morph targets, twist bones, deformation, animation retargeting, root motion, bone limits, control rig...

Master of capital preservation and position sizing - combining Kelly Criterion, volatility targeting, correlation analysis, and drawdown management to survive and thrive in marketsUse when "risk management, position size, stop loss, drawdown, kelly, risk per trade, portfolio risk, volatility, max loss, trading, risk-management, position-sizing, kelly-criterion, drawdown, volatility, stop-loss, portfolio-risk" mentioned.

Use when building VaR models, stress testing portfolios, Monte Carlo simulations, or implementing enterprise risk management - covers market risk, credit risk, and operational risk frameworksUse when ", " mentioned.

Expert in comedic roasts, witty insults, and self-deprecating humor that lands. Covers the craft of punching up vs down, timing, target selection, and knowing the line between funny and mean. Knows how to be savage while staying lovable. Use when "roast, burn, diss, self-deprecating, witty reply, comeback, shade, " mentioned.

World-class Roblox game development - Lua scripting, Roblox Studio, game systems, monetization, and building experiences that millions play. Use when "roblox, roblox studio, lua scripting, roblox game, obby, simulator game, roblox experience, robux, devex, " mentioned.

Patterns for developing robotics applications with ROS2 (Robot Operating System 2). Covers nodes, topics, services, actions, launch files, lifecycle management, real-time considerations, and common pitfalls. Use when ", " mentioned.

Systems programming specialist for Rust, ownership model, memory safety, concurrency, and performance optimizationUse when "rust, cargo, ownership, borrowing, lifetimes, rustc, tokio, async rust, memory safety, borrow checker, zero-cost abstraction, rust, systems-programming, memory-safety, ownership, borrowing, lifetimes, cargo, async, tokio, concurrency, performance" mentioned.

World-class expertise in tokenizing real-world assets with regulatory complianceUse when "tokenize real estate, tokenize real world assets, RWA tokenization, security token, STO, ERC-3643, T-REX token, tokenized securities, fractional ownership, compliant token, transfer restrictions, regulated token, asset-backed token, tokenize commodities, tokenize art, Reg D token, Reg S token, Reg A+ token, ONCHAINID, rwa, tokenization, security-token, compliance, erc-3643, real-estate, fractional-owners...

Master the AI tools that supercharge your sales process. From prospecting to closing, automate the grind and focus on building relationships that convert. Use when "sales automation, cold outreach, lead generation, prospecting tools, CRM setup, sales engagement, pipeline management, conversation intelligence, sales, crm, outreach, prospecting, leads, automation" mentioned.

Expert patterns for Salesforce platform development including Lightning Web Components (LWC), Apex triggers and classes, REST/Bulk APIs, Connected Apps, and Salesforce DX with scratch orgs and 2nd generation packages (2GP). Use when "salesforce, sfdc, apex, lwc, lightning web components, sfdx, scratch org, visualforce, soql, governor limits, connected app, salesforce, lwc, apex, crm, platform, sfdx, lightning" mentioned.

The scientific method applied to computational research, data science, and experimental software engineering. Covers hypothesis formulation, experimental design, controls, reproducibility, and avoiding common methodological pitfalls like p-hacking, HARKing, and confirmation bias. Use when ", " mentioned.

Expert in protecting projects from scope creep. Covers requirement management, stakeholder negotiation, saying no diplomatically, and keeping projects focused. Understands that scope creep kills more projects than technical debt. Use when "scope creep, feature request, can we also, while you're at it, one more thing, requirements changed, scope management, " mentioned.

Expert in building immersive scroll-driven experiences - parallax storytelling, scroll animations, interactive narratives, and cinematic web experiences. Like NY Times interactives, Apple product pages, and award-winning web experiences. Makes websites feel like experiences, not just pages. Use when "scroll animation, parallax, scroll storytelling, interactive story, cinematic website, scroll experience, immersive web, " mentioned.

Client library architect for SDK design, API ergonomics, versioning, and developer experienceUse when "sdk design, client library, api client, developer experience, sdk versioning, type generation, http client, api wrapper, sdk, client-library, api-client, developer-experience, versioning, type-safety, http-client, ml-memory" mentioned.

World-class application security - OWASP Top 10, secure coding patterns, and the battle scars from security incidents that could have been preventedUse when "security, secure, vulnerability, injection, xss, csrf, authentication, authorization, owasp, encryption, secret, password, token, sanitize, validate, escape, encode, harden, security, owasp, injection, xss, csrf, authentication, authorization, encryption, secrets, hardening" mentioned.

Expert at securing web applications against OWASP Top 10 vulnerabilities. Covers authentication, authorization, input validation, XSS prevention, CSRF protection, secure headers, and security testing. Treats security as a first-class requirement, not an afterthought. Use when "security, OWASP, XSS, CSRF, SQL injection, authentication security, authorization, input validation, secure headers, vulnerability, penetration testing, security, owasp, authentication, authorization, xss, csrf, injecti...

One breach = game over. Threat modeling, OWASP Top 10, secure coding, security architecture, zero trust. The complete security skill for protecting your application from day one. Security isn't a feature you add later - it's a mindset that shapes every decision. This skill covers application security, not infrastructure security. Use when "security, owasp, xss, sql injection, csrf, authentication, authorization, secrets, api key, vulnerability, secure coding, security headers, rate limiting,...

Expert patterns for Segment Customer Data Platform including Analytics.js, server-side tracking, tracking plans with Protocols, identity resolution, destinations configuration, and data governance best practices. Use when "segment, analytics.js, customer data platform, cdp, tracking plan, event tracking, identify track page, data routing, segment, cdp, analytics, tracking, data-pipeline, customer-data" mentioned.

Build production-ready semantic search systems using vector databases, embeddings, and retrieval-augmented generation (RAG). Covers vector DB selection (Pinecone/Qdrant/Weaviate), embedding models (OpenAI/Voyage/Cohere), chunking strategies, hybrid search, and reranking for high-quality retrieval. Use when ", vector-search, embeddings, rag, pinecone, qdrant, weaviate, llama-index, langchain, hybrid-search, reranking" mentioned.

Patterns for multi-sensor data fusion including Kalman filters (KF, EKF, UKF), complementary filters, particle filters, and factor graph optimization. Covers state estimation, covariance tuning, outlier rejection, and real-time implementation for robotics and autonomous systems. Use when ", " mentioned.

World-class alternative data and sentiment analysis for trading - social media, news, on-chain data, positioning. Extract alpha from information others miss. Use when "sentiment, alternative data, social media trading, news trading, twitter signals, on-chain, whale watching, fear greed, positioning, " mentioned.