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Found 986 Skills
Apply statistical methods to financial data including descriptive statistics, covariance estimation, regression, hypothesis testing, and resampling. Use when the user asks about return distributions, correlation between assets, building a covariance matrix, running a CAPM regression, testing whether alpha is significant, checking if returns are normal, or estimating confidence intervals. Also trigger when users mention 'volatility', 'how correlated are these', 'fat tails', 'skewness', 'R-squared', 'beta of a fund', 'bootstrap a Sharpe ratio', 'shrinkage estimator', 'Ledoit-Wolf', or ask why their optimizer produces unstable weights.
Creates GitHub Pull Requests with automated validation and task tracking. Use when user wants to create PR, open pull request, submit for review, or check if ready for PR. Analyzes commits, validates task completion, generates Conventional Commits title and description, suggests labels. NOTE - for merging existing PRs, use github-pr-merge instead.
Generate descriptive chat titles from the first message using a fast LLM. Runs as a background workflow step after the main response to avoid delaying the experience.
Markdown accessibility rule library covering ambiguous links, anchor validation, emoji handling (remove or translate to English), Mermaid and ASCII diagram replacement templates, heading structure, table descriptions, and severity scoring. Use when auditing or fixing markdown documentation for accessibility.
Adding or changing routes in `apps/api`. One source of truth (`defineApiEndpoint` + a Zod schema) becomes an HTTP endpoint, an OpenAPI operation, an MCP tool, and a TS SDK method — descriptions and contracts must be written with all four readers in mind.
Upload one or many videos to YouTube. Use when the user wants to "上传到 YouTube", "发 YouTube", "批量上传", "upload to YouTube", "post videos to YouTube", or to publish a finished `final/` directory of MP4s. Reads per-video metadata (title / description / tags) from a sibling `UPLOAD_META.md` file when present (the user's standard markdown format), or from command-line flags. Survives behind a SOCKS/HTTP proxy by using `requests` directly for the resumable upload (the stock `google-api-python-client` MediaFileUpload stalls under this user's proxy setup).
Drafts adverse possession complaints and quiet title pleadings. Structures jurisdictional foundations, legal property descriptions, and element-by-element proof of actual, open, continuous, exclusive, and hostile possession. Use when filing adverse possession claims, quiet title actions, or prescriptive ownership pleadings.
Fetch a YouTube transcript and generate an executive summary, key points, and timestamped topic list as a polished HTML report. Activate on YouTube URLs or requests like "summarize this video", "what's this about", "give me the highlights", "TL;DR this", "digest this video", "watch this for me", "I watched this and want a breakdown", or "make notes on this talk". Supports non-English videos, language selection, and yt-dlp enrichment for chapters, video description, and richer metadata.
Evaluate interface descriptions against 168 research-backed UX/UI principles. Returns structured findings with severity, remediation, and business impact. API key optional — enriched output requires uxuiprinciples.com API Access.
Expert guidance for designing, implementing, migrating, and debugging SwiftData persistence in Swift and SwiftUI apps. Use when working with @Model schemas, @Relationship/@Attribute rules, Query or FetchDescriptor data access, ModelContainer/ModelContext configuration, CloudKit sync, SchemaMigrationPlan/history APIs, ModelActor concurrency isolation, or Core Data to SwiftData adoption/coexistence.
Generate Chinese Git commit messages that comply with the Conventional Commits specification. Use this when users request to create Git commits, generate commit messages, or mention "submit code", "git commit", or "Chinese commit". Automatically analyze code changes to generate standardized Chinese commit messages with correct type prefixes (feat/fix/docs, etc.) and clear descriptions.
Analyzes code for WCAG 2.4.4 Link Purpose (In Context) compliance. Identifies generic link text, ambiguous links, and links without sufficient context. Recommends descriptive link text and proper ARIA attributes.