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Read-only code exploration and documentation search agent

Write high-quality Zenn technical articles following Japanese article writing best practices, focusing on problem-solving narratives rather than technology showcases

Master Archivist - Documentation keeper, knowledge organizer, and institutional memory

Platform-specific patterns for iOS and Android. Use when writing platform-conditional code.

Validates tests for test theater anti-patterns. Use when reviewing test code, writing new tests, or when user asks to check tests for quality issues. Ensures tests verify real behavior, not just provide false confidence.

Use this skill when you are writing commands, hooks, skills for Agent, or prompts for sub agents or any other LLM interaction, including optimizing prompts, improving LLM outputs, or designing production prompt templates.

Use this skill when writing or updating SQL queries (query.sql) or Python ETL scripts (query.py) following Mozilla BigQuery ETL conventions. ALWAYS checks for and updates existing tests when modifying queries. Coordinates downstream updates to schemas and tests. Works with bigquery-etl-core, metadata-manager, and sql-test-generator skills.

Research accelerator portfolio companies using Firecrawl and Tavily MCPs. Generates structured CSV and markdown reports with systematic impact scoring. Optimized for token efficiency.

Creates beautiful ASCII art visualizations for plans, architectures, workflows, and data. This skill should be used when explaining system architecture, creating implementation plans, showing workflows, visualizing comparisons, or documenting file structures. NOT for code syntax highlighting or markdown tables. User explicitly loves ASCII art - use liberally for visual communication.

Creates design document infrastructure including templates, workflows, and a specific design doc skill. Use when setting up design docs for a new project or when the user mentions "bootstrapping-design-docs".

Translate specification files to Japanese while preserving technical accuracy and formatting

Run comprehensive code quality checks including TypeScript typecheck, ESLint linting, Prettier formatting, and Markdown validation. Auto-fixes formatting issues in agent mode or provides read-only checks for CI pipelines. Use when: (1) Before committing code changes, (2) In CI/CD pipelines for automated quality gates, (3) After making significant code changes, (4) When preparing code for review, (5) When ensuring code meets quality standards, (6) For type checking, linting, formatting, and markdown validation, (7) In pre-commit hooks, or (8) For automated quality gates before merging. Triggers: finalize, code quality, typecheck, lint, format, check code, quality check, run checks, pre-commit, before commit, CI checks, validate code.

Writing high quality Frontend React code with following best practices and conventions. Use this skill when user asks for creating new components, refactoring old components, bug fixing components. The mentioned conventions and best practices should be followed with respect to the project structure and purpose.

Expert TypeScript/JavaScript development guidance. Use when planning or writing TypeScript/JavaScript code, setting up TS/JS projects, configuring build tools (pnpm, Vite, TypeScript), implementing tests (Vitest), adding logging (pino for services, chalk/console for CLIs), working with React/Tailwind/Xstate, or following FP patterns. Covers stack decisions, tooling setup, testing strategies, and logging patterns for both services and CLI tools.

Standards for writing CLAUDE.md and modular rules files (.claude/rules/) that maximize LLM execution efficiency. Use when creating or editing project instructions, defining conventions, or optimizing agent behavior for determinism and token efficiency. Focuses on eliminating ambiguity and producing consistent agent execution.

优化程序员 Markdown 简历，包括改进技术描述、量化项目成果、突出技术亮点、优化技能展示。当用户说"优化简历"、"改进简历"、"重写简历"、"让简历更专业"、"提升简历质量"，或提供简历文件需要优化时使用。

UI design system toolkit for creating consistent, accessible, and scalable interfaces. Includes design token generation, component documentation, responsive design calculations, and developer handoff tools. Use for creating design systems, maintaining visual consistency, and facilitating design-dev collaboration.

Reusable Liquid snippet patterns with proper documentation and parameter handling

Use before committing staged changes when you need to verify all related documentation is current - systematically checks README, CLAUDE.md, CHANGELOG, API docs, package metadata, and cross-references rather than spot-checking only obvious files

When you need check documentation about Ruby classes, modules, and methods use this skill to get full details. Avoid check source code or use `ruby -e` for documentation unless absolutely necessary.