productivity▌

Real-time and historical financial data for Chinese and Asian markets via AkShare library. \n \n Covers A-shares, Hong Kong stocks, US stocks, futures, funds, and macroeconomic indicators with real-time quotes and historical daily/weekly/monthly data \n Supports multiple adjustment modes (forward, backward, or unadjusted) and returns pandas DataFrames for easy processing \n Includes macroeconomic data such as GDP, CPI, and PMI for market analysis \n Requires implementing custom caching and retry

Largest Contentful Paint (LCP) measures how quickly a page's main content becomes visible. It's the time from navigation start until the largest image or text block renders in the viewport.

Diagnose and fix the three Core Web Vitals metrics that impact search ranking and user experience. \n \n Covers LCP (Largest Contentful Paint), INP (Interaction to Next Paint), and CLS (Cumulative Layout Shift) with specific thresholds and optimization strategies for each \n Includes common causes, code examples, and debugging scripts for identifying bottlenecks in loading, interactivity, and visual stability \n Provides framework-specific quick fixes for Next.js, React, and Vue/Nuxt, plus measu

Comprehensive security checklist covering secrets, input validation, authentication, and deployment readiness. \n \n Covers 10 critical security domains: secrets management, input validation, SQL injection prevention, authentication/authorization, XSS prevention, CSRF protection, rate limiting, sensitive data exposure, blockchain wallet verification, and dependency security \n Includes code examples for both unsafe and secure patterns across TypeScript, SQL, and configuration files \n Provides p

This skill provides a set of core principles and practices for software development. Use this when implementing new features, refactoring existing code, or reviewing code to ensure high quality and maintainability.

Generate draw.io diagrams as native .drawio files. Optionally export to PNG, SVG, or PDF with the diagram XML embedded (so the exported file remains editable in draw.io).

Download YouTube videos in customizable quality and format with audio-only MP3 support. \n \n Supports six quality presets (best, 1080p, 720p, 480p, 360p, worst) and three video formats (MP4, WebM, Matroska) \n Audio-only downloads extract video as MP3 files for music or podcast extraction \n Automatically installs and uses yt-dlp for robust stream selection and merging \n Configurable output directory; defaults to /mnt/user-data/outputs/ with auto-generated filenames from video titles \n

This skill covers reverse engineering workflows for game security research, including protected game clients, anti-cheat user-mode modules, kernel drivers, memory artifacts, and debugging environments that must survive anti-analysis checks.

Detect structural macro regime transitions using monthly-frequency cross-asset ratio analysis. This skill identifies 1-2 year regime shifts that inform strategic portfolio positioning.

Guides carousel (slider) layout design for sequential content display. Carousels show one or few items at a time; users swipe or click to advance. Best when space is limited and multiple items need rotation—testimonials, quotes, logos, gallery highlights.