Skills

Angular Ecosystem skill covering Angular Schematics — provides API changes, breaking changes, and best practices for building custom code generators, workspace transformations, and automated migration scripts using the Angular CLI schematic system.

Battle-tested Claude Code skills, commands, and references for modern Apple platform development with Swift 6, SwiftUI, Liquid Glass, Apple Intelligence, and more.

A financial data skill from an open-source collection developed for AI courses at UCEMA. Barchart provides free web scraping access to stocks, futures, and fundamentals data, and is part of a broader suite covering 30+ global and regional market data sources.

A capacity planning helper skill from a comprehensive library of 155 production-ready development skills covering modern software engineering.

A skill for serving cryptographically verified responses from Internet Computer query calls using Merkle trees and subnet BLS signatures. It covers the certified data API, RbTree/CertTree construction, witness generation, and frontend certificate validation in both Rust and Motoko, enabling fast query responses that are provably authentic.

An expert guide for cliamp, a retro terminal music player inspired by Winamp that plays local files (MP3, FLAC, WAV, OGG, and more), streams, and podcasts. It integrates with Spotify, YouTube Music, SoundCloud, Plex, Jellyfin, and Navidrome, and features a spectrum visualizer, parametric EQ, and Lua plugin system.

Extracts and analyzes competitive advertising data from multiple sources, providing insights into marketing strategies and ad performance across different platforms.

A collection of 161 AI agent skills for Claude Code, Gemini CLI, and Google Antigravity, providing domain-specific knowledge, workflows, and best practices.

Compares game design document (GDD) content specifications against actual implemented assets — levels, enemies, items, abilities, and more. Identifies gaps between planned and built content with a coverage report.

Performs cross-asset correlation analysis for crypto markets including rolling correlation, hierarchical clustering, tail dependence, and regime-dependent correlation to support portfolio construction, risk management, and pairs trading.

Reviews Kibana dashboard JSON changes in pull requests by extracting structured descriptions, comparing before/after states, and checking compliance against official dashboard guidelines.

Database performance watchlist skill for monitoring and alerting on database query performance issues and slow queries.

A design exploration skill that generates multiple AI design variants, opens a comparison board for side-by-side review, collects structured feedback, and iterates. Useful for visual brainstorming and exploring UI design options before committing to a direction.

A code review skill that analyzes git diffs and leaves inline comments using the diffity agent CLI, supporting focused reviews by area (security, performance, naming, logic) and adapting strategy based on diff size.

A six-step essay writing pipeline for Claude Code that guides you from scattered notes to polished prose — covering brief capture, outline design, drafting, surgical revision, editorial review, and final polish.

Official curated directory of high-quality plugins for Claude Code maintained by Anthropic, containing both internal plugins developed by Anthropic and vetted third-party external plugins.

Audits experiment integrity using cross-model review (GPT-5.4) to detect common fraud patterns such as fake ground truth, score normalization issues, phantom results, and insufficient scope in research experiments.

Part of the ARIS (Auto-claude-code-research-in-sleep) toolkit, this skill generates figure descriptions for academic papers and patent specifications, including reference numeral indexing and integration with the broader autonomous research workflow.

Helps users discover, search, and install agent skills from the marketplace, supporting progressive disclosure and recommending relevant sandbox-related skills.

Generates structured documentation for GPUI components by following existing documentation patterns and referencing story implementations.

A skill for implementing hexagonal architecture layers in Java, from a community-driven collection of curated AI agent skills providing best practices and conventions for specific frameworks and patterns.

A curated collection of 125+ agent skills organized into four buckets: 30 original skills covering React, Rust, testing, and UI craft; 31 hand-picked community skills for debugging, architecture diagrams, and framework-specific guidance; 18 marketing and business skills; and 46 broader community contributions.

Part of the DESIGN.md project by Google Labs, a format specification for describing visual identity to coding agents. Provides a CLI to lint, diff, and export design tokens (colors, typography, spacing, components) with WCAG contrast checking and Tailwind/DTCG export support.

Generates tailored internal communications following company-specific formats and guidelines for various communication types.

JavaScript expert persona skill from PCL (Persona Control Language), making AI behavior programmable and testable for JavaScript development contexts.

Retrieves and analyzes Amazon Ads campaign reports including sponsored products, brands, and display advertising performance metrics for cross-border e-commerce sellers.

A skill for drilling into brand-level product listings on Russia's Ozon marketplace via MPSTATS, providing sales, revenue, pricing, ratings, and inventory metrics for brand benchmarking and competitor analysis.

A library of 245 AI skills across 14 domains including engineering, marketing, compliance, and legal, supporting 11 AI assistants with 18 built-in compliance frameworks covering SOC 2, ISO 13485, HIPAA, GDPR, EU AI Act, and more.

Delegates tasks to MassGen's multi-agent system where multiple AI agents work in parallel on writing, code, review, planning, and research. Supports modes for general tasks, evaluation, planning, spec writing, and auto-execution with custom evaluation criteria.

A monitoring expert persona skill from PCL (Persona Control Language), a governance-first programming language for making AI behavior programmable, portable, and predictable.