> browse/registry

> x-tweet-fetcher

Fetch tweets, replies, and user timelines from X/Twitter without login or API keys. Also supports Chinese platforms (Weibo, Bilibili, CSDN, WeChat). Includes camofox_search() for zero-cost Google search without API keys. Basic tweet fetching: zero dependencies. Replies/timelines/search: requires Camofox. NEW: X-Tracker for tweet growth monitoring with burst detection.

> obs-memory

Persistent Obsidian-based memory for coding agents. Use at session start to orient from a knowledge vault, during work to look up architecture/component/pattern notes, and when discoveries are made to write them back. Activate when the user mentions obsidian memory, obsidian vault, obsidian notes, or /obs commands. Provides commands: init, analyze, recap, project, note, todo, lookup, relate.

> pomodoro

Simple Pomodoro timer for focused work sessions with session tracking and productivity analytics. Use when users request focus timers, ask about productivity patterns, or want to track work sessions over time. Demonstrates the System Skill Pattern (CLI + SKILL.md + Database).

> pomodoro

Simple Pomodoro timer for focused work sessions with session tracking and productivity analytics. Use when users request focus timers, ask about productivity patterns, or want to track work sessions over time. Demonstrates the System Skill Pattern (CLI + SKILL.md + Database).

> shareplay-developer

Build, integrate, and troubleshoot SharePlay GroupActivities features, including GroupActivity definitions, activation flows, GroupSession lifecycle, messaging and journals, ShareLink and SharePlay UI surfaces, and visionOS spatial coordination. Use when implementing or debugging SharePlay experiences across Apple platforms, especially visionOS.

> visionos-immersive-media-developer

Implement immersive and spatial video experiences on Apple Vision Pro (visionOS), including RealityKit VideoPlayerComponent setup, portal/progressive/full immersive viewing modes, transitions and events, comfort mitigation, and Apple Immersive Video authoring workflows.

> shadergraph-editor

Author, load, and troubleshoot Reality Composer Pro Shader Graph materials for RealityKit on visionOS. Use when building Shader Graph materials, exposing promoted inputs for runtime control, or debugging exported USD and MaterialX interop.

> arkit-visionos-developer

Build and debug ARKit features for visionOS, including ARKitSession setup, authorization, data providers (world tracking, plane detection, scene reconstruction, hand tracking), anchor processing, and RealityKit integration. Use when implementing ARKit workflows on visionOS or troubleshooting provider-specific space, privacy, and lifecycle behavior.

> doc-coauthoring

Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.

> laravel-security

Security standards for hardening Laravel applications. Use when securing authentication, authorization, input validation, or CSRF in Laravel. (triggers: app/Policies/**/*.php, config/*.php, policy, gate, authorize, env, config)

> react-security

Security practices for React (XSS, Auth, Dependencies). Use when preventing XSS, securing auth flows, or auditing third-party dependencies in React. (triggers: **/*.tsx, **/*.jsx, dangerouslySetInnerHTML, token, auth, xss)

> common-session-retrospective

Analyze conversation corrections to detect skill gaps and auto-improve the skills library. Use after any session with user corrections, rework, or retrospective requests. (triggers: **/*.spec.ts, **/*.test.ts, SKILL.md, AGENTS.md, retrospective, self-learning, improve skills, session review, correction, rework)

> angular-security

Security best practices for Angular (XSS, CSP, Route Guards). Use when implementing XSS protection, Content Security Policy, or auth guards in Angular. (triggers: **/*.ts, **/*.html, DomSanitizer, innerHTML, bypassSecurityTrust, CSP)

> flutter-retrofit-networking

HTTP networking standards using Dio and Retrofit with Auth interceptors. Use when integrating Dio, Retrofit, or API auth interceptors in Flutter. (triggers: **/data_sources/**, **/api/**, Retrofit, Dio, RestClient, GET, POST, Interceptor, refreshing)

> laravel-sessions-middleware

Expert standards for session drivers, security headers, and middleware logic. Use when configuring session drivers, security headers, or custom middleware in Laravel. (triggers: app/Http/Middleware/**/*.php, config/session.php, session, driver, handle, headers, csrf)

> golang-security

Security standards for Go backend services. Use when implementing input validation, crypto, or SQL injection prevention in Go. (triggers: **/*.go, crypto/rand, sql, sanitize, jwt, bcrypt, validation)

> nextjs-authentication

Secure token storage (HttpOnly Cookies) and Middleware patterns. Use when implementing authentication, secure session storage, or auth middleware in Next.js. (triggers: middleware.ts, **/auth.ts, **/login/page.tsx, cookie, jwt, session, localstorage, auth)

> nextjs-security

Core security standards for App Router and Server Actions. Use when securing Next.js App Router routes, Server Actions, or API endpoints. (triggers: app/**/actions.ts, middleware.ts, action, boundary, sanitize, auth, jose)

> typescript-security

Secure coding practices for TypeScript. Use when validating input, handling auth tokens, sanitizing data, or managing secrets and sensitive configuration. (triggers: **/*.ts, **/*.tsx, validate, sanitize, xss, injection, auth, password, secret, token)

> Session Retrospective

Analyze conversation corrections to detect skill gaps and auto-improve the skills library. Use after any session with user corrections, rework, or retrospective requests.