Claude Code Skills · page 12

Fetch any URL and convert to markdown using baoyu-fetch CLI (Chrome CDP with site-specific adapters). Built-in adapters for X/Twitter, YouTube transcripts, Hacker News threads, and generic pages via Defuddle. Handles login/CAPTCHA via interaction wait modes. Use when user wants to save a webpage as markdown.

Summarizes WeChat group chat highlights into a structured digest using the local wx-cli binary (https://github.com/jackwener/wx-cli). Generates a normal digest by default; a roast (毒舌) version is opt-in. Maintains per-group history (history.json + history-digests.jsonl), per-user profiles, and per-group fact memory (memory.md) across runs, with privacy guardrails baked in. Use when the user asks to "总结群聊", "群聊精华", "群聊摘要", "summarize group chat", "group chat digest", mentions a WeChat group name with a time range, says "帮我看看 XX 群最近聊了什么", "XX 群有什么值得看的", or asks to "回溯画像" / "初始化画像" / "backfill profiles". Adds the roast version when the user says "毒舌版", "roast 版", "再来个毒舌的", or similar.

Generates infographic image card series with 12 visual styles, 8 layouts, and 3 color palettes. Breaks content into 1-10 cartoon-style image cards optimized for social media engagement. Use when user mentions "小红书图片", "小红书种草", "小绿书", "微信图文", "微信贴图", "image cards", "图片卡片", baoyu-xhs-images, or wants social media infographic series.

Downloads YouTube video transcripts/subtitles and cover images by URL or video ID. Supports multiple languages, translation, chapters, and speaker identification. Caches raw data for fast re-formatting. Use when user asks to "get YouTube transcript", "download subtitles", "get captions", "YouTube字幕", "YouTube封面", "视频封面", "video thumbnail", "video cover image", or provides a YouTube URL and wants the transcript/subtitle text or cover image extracted.

Playwright-based browser automation patterns for autonomous web interaction

Expert knowledge for AI video clipping — yt-dlp downloading, whisper transcription, SRT generation, and ffmpeg processing

Expert knowledge for AI intelligence collection — OSINT methodology, entity extraction, knowledge graphs, change detection, and sentiment analysis

Expert knowledge for the Infisical Sync Hand — Infisical API reference, vault operations, error patterns, security guidance

Expert knowledge for AI lead generation — web research, enrichment, scoring, deduplication, and report generation

Expert knowledge for AI forecasting — superforecasting principles, signal taxonomy, confidence calibration, reasoning chains, and accuracy tracking

Expert knowledge for AI deep research — methodology, source evaluation, search optimization, cross-referencing, synthesis, and citation formats

Expert knowledge for autonomous market intelligence and trading — technical analysis, risk management, Alpaca API, financial data sources

Expert knowledge for AI Twitter/X management — API v2 reference, content strategy, engagement playbook, safety, and performance tracking

Ansible automation expert for playbooks, roles, inventories, and infrastructure management

API testing expert for curl, REST, GraphQL, authentication, and debugging

AWS cloud services expert for EC2, S3, Lambda, IAM, and AWS CLI

Microsoft Azure expert for az CLI, AKS, App Service, and cloud infrastructure

CI/CD pipeline expert for GitHub Actions, GitLab CI, Jenkins, and deployment automation

Code review specialist focused on patterns, bugs, security, and performance

Compliance expert for SOC 2, GDPR, HIPAA, PCI-DSS, and security frameworks

Confluence wiki expert for page structure, spaces, macros, and content organization

Cryptography expert for TLS, symmetric/asymmetric encryption, hashing, and key management

CSS expert for flexbox, grid, animations, responsive design, and modern layout techniques

Data analysis expert for statistics, visualization, pandas, and exploration

Data pipeline expert for ETL, Apache Spark, Airflow, dbt, and data quality

Docker expert for containers, Compose, Dockerfiles, and debugging

Elasticsearch expert for queries, mappings, aggregations, index management, and cluster operations

Professional email writing expert for tone, structure, clarity, and business communication

Figma design expert for components, auto-layout, design systems, and developer handoff

Google Cloud Platform expert for gcloud CLI, GKE, Cloud Run, and managed services

Git operations expert for branching, rebasing, conflicts, and workflows

GitHub operations expert for PRs, issues, code review, Actions, and gh CLI

Go programming expert for goroutines, channels, interfaces, modules, and concurrency patterns

GraphQL expert for schema design, resolvers, subscriptions, and performance optimization

Helm chart expert for Kubernetes package management, templating, and dependency management

Technical interview preparation expert for algorithms, system design, and behavioral questions

Jira project management expert for issues, sprints, workflows, and reporting

Kubernetes operations expert for kubectl, pods, deployments, and debugging

Linear project management expert for issues, cycles, projects, and workflow automation

Linux networking expert for iptables, nftables, routing, DNS, and network troubleshooting

LLM fine-tuning expert for LoRA, QLoRA, dataset preparation, and training optimization

Machine learning engineer expert for PyTorch, scikit-learn, model evaluation, and MLOps

MongoDB operations expert for queries, aggregation pipelines, indexes, and schema design

Next.js expert for App Router, SSR/SSG, API routes, middleware, and deployment

Nginx configuration expert for reverse proxy, load balancing, TLS, and performance tuning

Notion workspace management and content creation specialist

OAuth 2.0 and OpenID Connect expert for authorization flows, PKCE, and token management

OpenAPI/Swagger expert for API specification design, validation, and code generation

PDF content extraction and analysis specialist

PostgreSQL expert for query optimization, indexing, extensions, and database administration

Presentation expert for slide structure, storytelling, visual design, and audience engagement

Project management expert for Agile, estimation, risk management, and stakeholder communication

Prometheus monitoring expert for PromQL, alerting rules, Grafana dashboards, and observability

Prompt engineering expert for chain-of-thought, few-shot learning, evaluation, and LLM optimization

Python expert for stdlib, packaging, type hints, async/await, and performance optimization

React expert for hooks, state management, Server Components, and performance optimization

Redis expert for data structures, caching patterns, Lua scripting, and cluster operations

Regular expression expert for crafting, debugging, and explaining patterns

Rust programming expert for ownership, lifetimes, async/await, traits, and unsafe code

Privacy-respecting metasearch specialist using SearXNG instances

Security audit expert for OWASP Top 10, CVE analysis, code review, and penetration testing methodology

Sentry error tracking and debugging specialist

Shell scripting expert for Bash, POSIX compliance, error handling, and automation

Slack workspace management and automation specialist

SQL query expert for optimization, schema design, and data analysis

SQLite expert for WAL mode, query optimization, embedded patterns, and advanced features

System administration expert for Linux, macOS, Windows, services, and monitoring

Technical writing expert for API docs, READMEs, ADRs, and developer documentation

Terraform IaC expert for providers, modules, state management, and planning

TypeScript expert for type system, generics, utility types, and strict mode patterns

Vector database expert for embeddings, similarity search, RAG patterns, and indexing strategies

WebAssembly expert for WASI, component model, Rust/C compilation, and browser integration

Web search and research specialist for finding and synthesizing information

Writing improvement specialist for grammar, style, clarity, and structure

Chat / code generation via 9Router using OpenAI /v1/chat/completions or Anthropic /v1/messages format with streaming + auto-fallback combos. Use when the user wants to ask an LLM, generate code, summarize text, or run prompts through 9Router.

Generate vector embeddings via 9Router /v1/embeddings using OpenAI / Gemini / Mistral / Voyage / Nvidia / GitHub embedding models for RAG, semantic search, similarity. Use when the user wants embeddings, vectors, RAG, semantic search, or to embed text.

Generate images via 9Router /v1/images/generations using OpenAI / Gemini Imagen / DALL-E / FLUX / MiniMax / SDWebUI / ComfyUI / Codex models. Use when the user wants to create, generate, draw, or render an image, picture, or text-to-image (txt2img).

Speech-to-text via 9Router /v1/audio/transcriptions using OpenAI Whisper / Groq / Gemini / Deepgram / AssemblyAI / NVIDIA / HuggingFace models. Use when the user wants to transcribe audio, convert speech to text, or get subtitles from audio files.

Text-to-speech via 9Router /v1/audio/speech using OpenAI / ElevenLabs / Deepgram / Edge TTS / Google TTS / Hyperbolic / Inworld voices. Use when the user wants to convert text to speech, generate audio, voiceover, narrate, or read text aloud.

Fetch URL → markdown / text / HTML via 9Router /v1/web/fetch using Firecrawl / Jina Reader / Tavily Extract / Exa Contents. Use when the user wants to scrape a webpage, extract URL content, read article, or convert a URL to markdown.

Web search via 9Router /v1/search using Tavily / Exa / Brave / Serper / SearXNG / Google PSE / Linkup / SearchAPI / You.com / Perplexity. Use when the user wants to search the web, look up information, find articles, or query a search engine.

Entry point for 9Router — local/remote AI gateway with OpenAI-compatible REST for chat, image, TTS, embeddings, web search, web fetch. Use when the user mentions 9Router, NINEROUTER_URL, or wants AI without writing provider boilerplate. This skill covers setup + indexes capability skills; fetch the relevant capability SKILL.md from the URLs below when needed.

The method for finding the gap between what a system is supposed to do and what the code actually does — the class of bug generic scanners miss because they have no model of intent. Defines what counts as documented intent, what counts as implementation evidence, which mismatches matter, and how to avoid hand-wavy findings. Use when auditing AI-built code, reviewing access control against documented permissions, or checking whether a codebase matches its own documentation.

The durable documentation set that makes an AI-built (vibe-coded) app reviewable before shipping. A small core every app needs — architecture, user/permission flows, permissions, variables/secrets, and a test-coverage map — plus conditional docs added only when they apply: emails, scheduled work, SEO, and embedded agents/automation. Defines what each doc must capture and how a reviewer or auditor uses it. Use when documenting a codebase for handoff, mapping user journeys and trust-boundary crossings, planning test coverage, or preparing for a security or performance audit.

Analyze A/B test results with statistical significance, sample size validation, confidence intervals, and ship/extend/stop recommendations. Use when evaluating experiment results, checking if a test reached significance, interpreting split test data, or deciding whether to ship a variant.

Perform cohort analysis on user engagement data — retention curves, feature adoption trends, and segment-level insights. Use when analyzing user retention by cohort, studying feature adoption over time, investigating churn patterns, or identifying engagement trends.

Generate SQL queries from natural language descriptions. Supports BigQuery, PostgreSQL, MySQL, and other dialects. Reads database schemas from uploaded diagrams or documentation. Use when writing SQL, building data reports, exploring databases, or translating business questions into queries.

Brainstorm team-level OKRs aligned with company objectives — qualitative objectives with measurable key results. Use when setting quarterly OKRs, aligning team goals with company strategy, drafting objectives, or learning how to write effective OKRs.

Create a Product Requirements Document using a comprehensive 8-section template covering problem, objectives, segments, value propositions, solution, and release planning. Use when writing a PRD, documenting product requirements, preparing a feature spec, or reviewing an existing PRD.

Generate realistic dummy datasets for testing with customizable columns, constraints, and output formats (CSV, JSON, SQL, Python script). Use when creating test data, building mock datasets, or generating sample data for development and demos.

Create job stories using the 'When [situation], I want to [motivation], so I can [outcome]' format with detailed acceptance criteria. Use when writing job stories, creating JTBD-style backlog items, or expressing user situations and motivations.

Transform an output-focused roadmap into an outcome-focused one that communicates strategic intent. Rewrites initiatives as outcome statements reflecting user and business impacts. Use when shifting to outcome roadmaps, making a roadmap more strategic, or rewriting feature lists as outcomes.

Run a pre-mortem risk analysis on a PRD or launch plan. Categorizes risks as Tigers (real problems), Paper Tigers (overblown concerns), and Elephants (unspoken worries), then classifies as launch-blocking, fast-follow, or track. Use when preparing for launch, stress-testing a product plan, or identifying what could go wrong.

Reference guide to 9 prioritization frameworks with formulas, when-to-use guidance, and templates — RICE, ICE, Kano, MoSCoW, Opportunity Score, and more. Use when selecting a prioritization method, comparing frameworks like RICE vs ICE, or learning how different prioritization approaches work.

Generate user-facing release notes from tickets, PRDs, or changelogs. Creates clear, engaging summaries organized by category (new features, improvements, fixes). Use when writing release notes, creating changelogs, announcing product updates, or summarizing what shipped.

Facilitate a structured sprint retrospective — what went well, what didn't, and prioritized action items with owners and deadlines. Use when running a retrospective, reflecting on a sprint, creating action items from team feedback, or learning how to run effective retros.

Plan a sprint with capacity estimation, story selection, dependency mapping, and risk identification. Use when preparing for sprint planning, estimating team capacity, selecting stories, or balancing sprint scope against velocity.

Build a stakeholder map using a power/interest grid, identify communication strategies per quadrant, and generate a communication plan. Use when managing stakeholders, preparing for a launch, aligning cross-functional teams, or planning stakeholder engagement.

Red-team a PRD, roadmap, or strategy by attacking its load-bearing assumptions before reality does. Steelmans then attacks each claim, ranks failure modes by impact × likelihood × cheapness-to-test, and returns the cheapest test and kill criteria for each. Use when stress-testing a plan, pressure-testing a strategy, challenging assumptions, or preparing a doc for executive review.

Summarize a meeting transcript into structured notes with date, participants, topic, key decisions, summary points, and action items. Use when processing meeting recordings, creating meeting notes, writing meeting minutes, or recapping discussions.