Content & Media

Writing guidelines for clear, economical prose. Reference this skill when creating or enhancing note content.

Crawl and extract content from websites

Comprehensive guide for Cloudflare Durable Objects - globally unique, stateful objects for coordination, real-time communication, and persistent state management. Use when: building real-time applications, creating WebSocket servers with hibernation, implementing chat rooms or multiplayer games, coordinating between multiple clients, managing per-user or per-room state, implementing rate limiting or session management, scheduling tasks with alarms, building queues or workflows, or encountering "do class export", "new_sqlite_classes", "migrations required", "websocket hibernation", "alarm api error", or "global uniqueness" errors. Prevents 15+ documented issues: class not exported, missing migrations, wrong migration type, constructor overhead blocking hibernation, setTimeout breaking hibernation, in-memory state lost on hibernation, outgoing WebSocket not hibernating, global uniqueness confusion, partial deleteAll on KV backend, binding name mismatches, state size limits exceeded, non-atomic migrations, location hints misunderstood, alarm retry failures, and fetch calls blocking hibernation. Keywords: durable objects, cloudflare do, DurableObject class, do bindings, websocket hibernation, do state api, ctx.storage.sql, ctx.acceptWebSocket, webSocketMessage, alarm() handler, storage.setAlarm, idFromName, newUniqueId, getByName, DurableObjectStub, serializeAttachment, real-time cloudflare, multiplayer cloudflare, chat room workers, coordination cloudflare, stateful workers, new_sqlite_classes, do migrations, location hints, RPC methods, blockConcurrencyWhile, "do class export", "new_sqlite_classes", "migrations required", "websocket hibernation", "alarm api error", "global uniqueness", "binding not found"

This Claude Skill can be used to build, test, and automate iOS apps. 13 production-ready scripts including ultra token-efficient xcode build automation, log monitoring, intelligent simulator selection, and accessibility-driven UI simulator navigation.

Complete guide for Svelte 5 runes ($state, $derived, $effect, $props, $bindable). Use for any Svelte 5 project or when code contains $ prefixed runes. Essential for reactive state management, computed values, side effects, and component props. Covers migration from Svelte 4 reactive statements.

Bitcoin trading simulation with technical analysis (EMA/RSI/Bollinger), Monte Carlo projections, and Telegram alerts. Cambodian market focus (USD/KHR 4050). TRIGGERS: BTC backtesting, indicator calculations, Fear & Greed integration, crypto strategy development, CoinGecko/Alternative.me APIs, portfolio simulation, trailing stop optimization, Sharpe/drawdown metrics. ENTRY POINTS: btc_trader.py (365d backtest), btc_simulation.py (60d Monte Carlo), backtest_runner.py (advanced metrics).

Master coordinator that delegates to specialist skills, synthesizes outputs, AND creates new skills on-the-fly when needed. Expert in problem decomposition, skill orchestration, quality assurance, and skill creation for capability gaps. Use for multi-skill coordination, complex task decomposition, workflow design. Activates on 'orchestrate', 'coordinate', 'multi-skill', 'complex task'. NOT for single-domain tasks or simple linear workflows.

Spec-driven development methodology for ANY software project. USE WHEN developing features, fixing bugs, creating skills, or preparing releases. USE WHEN user mentions specs, testing, release process, change proposals, or deployment. Provides flexible spec tooling guidance but STRICT release discipline.

Comprehensive guide to integrating skills with Claude Code's 12 hook events. Use when creating hook-aware skills for harnesses like Clausitron, or when needing hook response schemas and patterns.

Create high-quality, SEO-optimized content that ranks AND reads like a human wrote it. Use when turning keyword research into actual content pieces. Takes a target keyword/cluster and produces a complete article optimized for search while avoiding AI-sounding output. Triggers on: write SEO content for X, create article for keyword, write blog post about X, SEO article, content for keyword cluster. Outputs publication-ready content with proper structure, optimization, and human voice.

Use when creating React/Vue components or adding UI features. Enforces composition patterns and state management best practices.

Build terminal UIs with Bubbletea, Bubbles, Lipgloss, and Huh. Use when creating TUI applications, interactive forms, styled terminal output, or when user mentions Bubbletea, Bubbles, Lipgloss, Huh, Charm, or TUI development.

Complete Android release build configuration - orchestrates keystore, ProGuard, and signing setup

Enterprise Encryption Security with AI-powered cryptographic architecture, Context7 integration, and intelligent encryption orchestration for data protection

Personal knowledge base that provides AI agents direct access to books. Use when answering questions that could benefit from book knowledge, when users ask about topics covered in their library, when providing coding/technical guidance that books might inform, or when users explicitly request book references. Proactively check the library when book knowledge might improve response quality.

Filter and classify AI research content for relevance. Use when processing raw content from Twitter, Substacks, blogs, or podcasts to determine if it's worth extracting claims from. Assigns relevance scores, topics, and author categories.

Testing suite with benchmarking for version-to-version performance comparison

Configure TraitorSim game parameters including regional rule variants (UK/US/Australia), recruitment mechanics, end-game modes, tie-breaking, and player counts. Use when setting up simulations, testing rule variants, comparing configurations, or when asked about game rules, regional variants, or simulation parameters.

Interactive Java/Spring Boot learning skill for experienced Go developers. Use when the user wants to learn Java, practice Spring Boot, work on Java exercises, or asks for Java explanations in Go terms. Supports mood-aware pacing with "low energy" mode for difficult days. Teaches through iterative project building rather than passive learning.

Use when implementing Disney's 12 animation principles with Lottie animations exported from After Effects