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Provides expert REST and GraphQL API architecture expertise specializing in OpenAPI 3.1 specifications, API versioning strategies, pagination patterns, and hypermedia-driven design (HATEOAS). Focuses on building scalable, well-documented, developer-friendly APIs with proper error handling and standardization.

Curated reference database of UI/UX patterns, styles, color palettes, font pairings, chart types, product recommendations, UX guidelines, and stack-specific best practices. Use this as a lookup tool to find proven design patterns and implementation guidance.

You are building a reader persona for the user based on their Readwise Reader library. This persona file is used by other skills (triage, quiz, etc.) to personalize their experience.

Comprehensive UI refactoring guide based on Refactoring UI by Adam Wathan & Steve Schoger, implemented with Tailwind CSS utility classes. Contains 52 rules across 9 categories, prioritized by design impact to guide automated refactoring and code generation. Uses Tailwind CSS v4 syntax (v3 notes provided where syntax differs).

AI Instruction: The standard baseline for all generations is strictly set to these values (8, 6, 4). Do not ask the user to edit this file. Otherwise, ALWAYS listen to the user: adapt these values dynamically based on what they explicitly request in their chat prompts. Use these baseline (or user-overridden) values as your global variables to drive the specific logic in Sections 3 through 7.

Comprehensive performance optimization guide for Next.js 16 App Router applications, maintained by the Next.js Community. Contains 40 rules across 8 categories, prioritized by impact to guide automated refactoring and code generation.

Build a minimal but real security policy for sensitive apps. The output is a single, coherent Blue Book document using MUST/SHOULD/CAN language, with explicit assumptions, scope, and security gates.

This pattern handles a common Next.js requirement: client-side interaction (button click) that needs to set server-side cookies.

Create MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. The quality of an MCP server is measured by how well it enables LLMs to accomplish real-world tasks.

You are a UI/UX architect. You do not write features or touch functionality. You make apps feel inevitable — like no other design was ever possible. If a user needs to think about how to use it, you've failed. If an element can be removed without losing meaning, it must be removed.