Development

Test and validate API contracts against specifications

Design and manage API contracts before implementation using OpenAPI and AsyncAPI specifications for contract-first development

Author OpenAPI/AsyncAPI specs, contracts, and mocks.

Convert repeated tasks into versioned skills, track performance gaps, and iteratively polish through Git version control. Use for identifying repeated patterns, improving skill consistency, tracking skill evolution, and addressing failure cases. Achieves 20% consistency improvement through iterative refinement. Triggers on "improve skill", "polish skill", "repeated task", "skill evolution", "version skill", "refine pattern".

Review user stories for quality, proper sizing, sequencing, and acceptance criteria. Use before converting to prd.json. Triggers on: review stories, check user stories, story quality, validate stories.

React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.

Capture learnings after tasks. Triggers on task completion, repeated mistakes, retrospective requests, or "what did I learn".

Emphasizes continuous improvement by suggesting process improvements and looking for opportunities to simplify and optimize code and workflows. This rule promotes a culture of ongoing refinement.

Convert PRDs to prd.json format for the Ralph autonomous agent system. Use when you have an existing PRD and need to convert it to Ralph's JSON format. Triggers on: convert this prd, turn this into ralph format, create prd.json from this, ralph json.

Generate a Product Requirements Document (PRD) for a new feature. Use when planning a feature, starting a new project, or when asked to create a PRD. Triggers on: create a prd, write prd for, plan this feature, requirements for, spec out.

Comprehensive PDF manipulation toolkit for extracting text and tables, creating new PDFs, merging/splitting documents, and handling forms. When Claude needs to fill in a PDF form or programmatically process, generate, or analyze PDF documents at scale.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.

Comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction. When Claude needs to work with professional documents (.docx files) for: (1) Creating new documents, (2) Modifying or editing content, (3) Working with tracked changes, (4) Adding comments, or any other document tasks

Design contingency module architectures for failure scenarios.

Master Continental philosophy and Critical Theory. Use for: post-structuralism, deconstruction, Frankfurt School, hermeneutics, psychoanalysis. Triggers: 'Foucault', 'power/knowledge', 'deconstruction', 'Derrida', 'différance', 'critical theory', 'Frankfurt School', 'Adorno', 'Habermas', 'genealogy', 'discourse', 'Lacan', 'Deleuze', 'rhizome', 'biopolitics', 'ideology', 'alienation', 'reification', 'hermeneutics', 'Gadamer', 'post-structuralism', 'logocentrism'.

Detect explicit user_id parameters in functions to identify potential opportunities for using ambient context. This is an investigation tool that flags instances for human review, not a prescriptive analyzer.

Fetch up-to-date library documentation using Context7 API. Use this skill when the user asks for docs, examples, or help with a specific library/framework (e.g., "look up React docs", "context7 nextjs routing", "fetch docs for fastapi").

To find the Context7-compatible library ID for a package or product name, resolve the library ID before querying docs unless the user already provided an /org/project ID (max 3 calls).

To fetch up-to-date docs and code examples from Context7 for a known library, query by a resolved library ID after running resolve-library-id (max 3 calls).

Always use Context7 MCP to fetch up-to-date library/API documentation before generating code that depends on external libraries or config. Use when the user asks for setup steps, configuration, or code involving third-party libraries. Prefer Context7 docs over memory. Include citations to the retrieved docs when possible.

Fetch the latest, docs-grounded API details and best practices for a library/framework using Context7 MCP tools `resolve-library-id` and `get-library-docs`. Use when a user asks for “最新用法/最新寫法/最佳實務/latest usage/current best practice/latest API” of a package, or asks how to implement a feature with a library and wants the newest docs-based guidance.

Use this skill when working with any framework or library (React, Next.js, Vue, Astro, etc.) to fetch up-to-date documentation and prevent hallucinated APIs. Triggers on keywords like "use context7", "latest docs", "current API", or when working with rapidly evolving frameworks.

Fetch up-to-date library documentation via Context7 REST API. Use when needing current API docs, framework patterns, or code examples for any library. Use when user asks about React, Next.js, Prisma, Express, Vue, Angular, Svelte, or any npm/PyPI package. Use when user says 'how do I use X library', 'what's the API for Y', or needs official documentation. Lightweight alternative to Context7 MCP with no persistent context overhead.

새 작업 요청 시 기존 작업과의 맥락 유사성을 판단하고, 비유사한 경우 자동으로 git worktree를 생성하여 새 브랜치에서 작업합니다. 작업 시작, 새 기능 구현, 다른 이슈 작업 시 자동 활성화됩니다.