Download videos, audio, and transcripts from YouTube and 1000+ sites with yt-dlp. Use when the user mentions "yt-dlp", "youtube-dl", wants to download a video, rip audio from a video, or extract a transcript from a URL.

Create and maintain a "For Coding Agents" reference page in project documentation. Generates dense, prescriptive documentation optimized for AI coding agents — architecture maps, decision dispatch tables, constraints catalogs, side effects matrices, task recipes, change playbooks, and common mistakes. Use when asked to "create agent docs", "update agent reference", "add docs for agents", "write coding agent documentation", or "update the for-coding-agents page". Also triggers on "agent-oriented docs", "AI-friendly reference". Do NOT use for general documentation, API reference generation, or user-facing tutorials.

Fix PHP coding style issues using PHPCS and PHPCBF. Use this skill whenever the user mentions PHPCS, code style, coding standard, cs:fix, cs:check, PHP formatting, or asks to fix/check PHP code style. Also activate when you notice PHP files have been modified and need style compliance, or when a CI PHPCS check has failed.

Detects logical and semantic bugs by understanding program intent — catches issues that syntax-only tools miss. Use when static analysis has already run and found nothing, when the user reports incorrect behavior but no crash, or when reviewing algorithmic code for correctness.

This skill should be used when modeling agent mental states with BDI concepts: beliefs, desires, intentions, RDF-to-belief transformations, rational agency traces, cognitive agents, BDI ontologies, and neuro-symbolic AI integration.

100+ animated React components (Aceternity UI) for Next.js with Tailwind. Use for hero sections, parallax, 3D effects, or encountering animation, shadcn CLI integration errors.

Provides concrete guidance on building terminal emulators in Swift using SwiftTerm, including configuring terminal views, parsing ANSI/VT100 escape sequences, managing PTY connections, and optimizing text rendering performance. Use when the user is building a terminal app, console view, or xterm-compatible emulator in Swift, integrating SwiftTerm into a SwiftUI or UIKit/AppKit app, working with PTY or SSH stream bridging, handling keyboard input and escape sequences, or optimizing terminal rendering on macOS, iOS, or visionOS.

Builds native visionOS and Apple Vision Pro apps using SwiftUI, RealityKit, and the Liquid Glass design system. Creates volumetric views, implements Liquid Glass materials, configures immersive spaces, manages spatial WindowGroups, designs 3D UI layouts, and wires up RealityKit entities with gestures and attachments. Use when building visionOS apps, Apple Vision Pro experiences, volumetric windows, immersive spaces, mixed reality interfaces, or applying Liquid Glass effects with SwiftUI and RealityKit on visionOS 26.

Designs spatial UI layouts, prototypes hand gesture interactions, creates 3D menu systems, and plans gaze-based navigation for AR/VR/XR applications. Provides ergonomic placement guidelines, comfort zone thresholds, input latency budgets, and accessibility fallback patterns for immersive interfaces across platforms including Meta Quest, Apple Vision Pro, and WebXR. Use when the user asks about spatial computing interfaces, VR/AR UI design, mixed reality interactions, hand tracking UX, HUD design, holographic displays, headset UI, immersive environment layouts, 3D interface design, cockpit dashboards, or comfort-zone-compliant panel placement.

Reviews contracts for compliance issues, drafts and audits privacy policies, assesses GDPR/CCPA/HIPAA/SOX/PCI-DSS obligations, identifies regulatory requirements, and flags legal risks across multiple jurisdictions. Use when the user asks about legal compliance, regulatory requirements, GDPR, CCPA, privacy policies, terms of service, contract review, data protection, data handling, legal review, or industry-specific regulations such as HIPAA, SOX, or PCI-DSS.

Operate Ryvn infrastructure: manage organizations, provision environments, deploy services and installations, configure blueprints, manage release channels and promotion pipelines, set up connections and variable groups, view logs, approve tasks, and handle preview deployments. Use this skill whenever the user mentions Ryvn, environments, services, installations, blueprints, deployments, infrastructure, provisioning, Kubernetes, cloud, GCP, service installations, release channels, or promotion pipelines, even if they don't say "Ryvn" explicitly.

Reviews and improves Claude Code skills against official best practices. Supports three modes - self-review (validate your own skills), external review (evaluate others' skills), and auto-PR (fork, improve, submit). Use when checking skill quality, reviewing skill repositories, or contributing improvements to open-source skills.

Update documentation pages to match source code changes on the current branch

Spring Boot中的JPA/Hibernate模式，用于实体设计、关系处理、查询优化、事务管理、审计、索引、分页和连接池。

libllm - LLM API client for OpenAI-compatible endpoints. LlmApi class handles chat completions and embeddings via HTTP. Supports GitHub Models, Azure OpenAI, and standard OpenAI endpoints. Handles streaming responses, token counting, and multi-tool parallel call fixes. Use for LLM completions, embeddings, and AI model integration.

Use when committing code changes in Ruby or Ruby on Rails projects — guides commit message structure, type selection, and body content following Conventional Commits format

Quick-reference card for all caveman modes, skills, and commands. One-shot display, not a persistent mode. Trigger: /caveman-help, "caveman help", "what caveman commands", "how do I use caveman".

Use when writing or reviewing Go code in this repo that sends text to Deepgram Read via the analyze client. Route speech/audio inputs to deepgram-go-speech-to-text or deepgram-go-audio-intelligence, and management/admin work to deepgram-go-management-api.

Use Neo4j GenAI Plugin ai.text.* functions and procedures for in-Cypher embedding generation, text completion, structured output, chat, tokenization, and batch ingestion. Covers ai.text.embed(), ai.text.embedBatch(), ai.text.completion(), ai.text.structuredCompletion(), ai.text.aggregateCompletion(), ai.text.chat(), ai.text.tokenCount(), ai.text.chunkByTokenLimit(), and provider configuration for OpenAI, Azure OpenAI, VertexAI, and Amazon Bedrock. Requires CYPHER 25. Replaces deprecated genai.vector.encode(). Use when writing pure-Cypher GraphRAG, embedding nodes in-graph, generating structured maps from prompts, or calling LLMs inside Cypher queries. Does NOT handle neo4j-graphrag Python library pipelines — use neo4j-graphrag-skill. Does NOT handle vector index creation/search — use neo4j-vector-index-skill.

Utility tools via uni CLI. Use when user wants weather, stock prices, currency conversion, QR codes, or URL shortening. Services: weather, stocks, currency, qrcode, shorturl.