Scripting

Analyzes and reduces JavaScript bundle size for fast loading. Use when adding dependencies, before releases, or if bundle exceeds 200KB

Enterprise-ready Python development incorporating Kaizen (continuous improvement) and Monozukuri (meticulous craftsmanship) principles. Use this skill when building Python applications, APIs, CLI tools, data pipelines, automation scripts, or when the user requests clean, efficient, fast, simple, elegant, enterprise-grade, bulletproof, or production-ready Python code. This skill enforces modern Python 3.12+ best practices, type safety, testing patterns, security, and performance optimization.

Review commits from a starting commit hash to HEAD. Use when user says "review commits from <hash>", "code review starting from <hash>", "review changes since <hash>", or provides a commit hash for review. Detects AI slop, component issues, and missed reuse opportunities.

Implement secure payments using Clerk Billing and Stripe without ever touching card data. Use this skill when you need to set up subscription payments, handle webhooks, implement payment gating, understand PCI-DSS compliance, or integrate Stripe Checkout. Triggers include "payment", "Stripe", "Clerk Billing", "subscription", "PCI-DSS", "credit card", "payment security", "checkout", "webhook", "billing".

Python testing patterns and best practices using pytest, mocking, and property-based testing. Use when writing unit tests, integration tests, or implementing test-driven development in Python projects.

Create valid Raycast script-commands that integrate with the Raycast launcher. Use this skill when users request creating Raycast scripts, automation commands for Raycast, or workflow shortcuts for the Raycast app. This skill ensures all outputs conform to Raycast's required metadata format and structural conventions.

Enforces type safety in TypeScript/Python implementations. Any/any types strictly prohibited. Use when processing API responses, integrating external libraries, or implementing data validation. Supports strict mode configuration and type guard implementation.

Python data analysis with pandas, numpy, and analytics libraries

This skill should be used when the user asks to "create a hook", "add a PreToolUse/PostToolUse/Stop hook", "validate tool use", "implement prompt-based hooks", "use ${CLAUDE_PLUGIN_ROOT}", "set up event-driven automation", "block dangerous commands", or mentions hook events (PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart, SessionEnd, UserPromptSubmit, PreCompact, Notification). Provides comprehensive guidance for creating and implementing Claude Code plugin hooks with focus on advanced prompt-based hooks API.

スクリプト開発ガイド。Shell、Python、Node.jsスクリプト、自動化、バッチ処理、環境変数管理など、効率的なスクリプト開発のベストプラクティス。

Intelligently choose between semantic and text search based on query intent. Automatically selects the best search mode (semantic for concepts, text for exact terms, symbols for definitions) and provides relevant results. Use when user wants to find code.

Game programming languages - C#, C++, GDScript. Learn syntax, patterns,and engine-specific idioms for professional game development.

JavaScript performance optimization and Web Vitals improvement techniques.

Comprehensive testing strategies for Rust including property-based testing with proptest, fuzz testing with cargo-fuzz, benchmark testing with Criterion, contract testing for traits, and Miri for undefined behavior detection. Use when writing tests, ensuring code correctness, detecting edge cases, or measuring performance.

Index-based file discovery using ABOUTME headers. Use INSTEAD of grep or Explore agent when searching for files by purpose or feature. Faster and more accurate than scanning code. Invoke this skill when user asks "which files handle X", "where is Y implemented", or when you need to find files related to a feature or task.

Apply Google Style documentation standards to Python, Go, and Terraform code. Use when writing or reviewing code that needs docstrings/comments, when asked to "document this code", "add docstrings", "follow Google Style", or when improving code documentation quality. Supports Python docstrings, Go comments, and Terraform variable/output descriptions. Enforces consistent, professional documentation standards.

This skill should be used when the user asks to "analyze code", "review code quality", "check code structure", "find code patterns", or mentions code analysis without making changes.

Provide a reusable pattern for memoizing deterministic function calls to reduce latency and repeated computation. Backed by the `python` diskcache package. Use skill when updating or editing everything.

Update repository documentation after code implementation. Maintains README, CHANGELOG, docs/ folder, and inline docstrings based on changes made. Triggered by lane-executor after task completion.

Master JavaScript objects and arrays including manipulation methods, prototypal inheritance, and complex data structure patterns.