A specific, opinionated design language based on real references. This skill encodes a visual DNA — not generic "make it look good" — but exact fonts, exact palettes, exact CSS values.

Design APIs that developers love to integrate with. Based on patterns from Stripe, GitHub, Twilio, and the OpenAPI 3.1 specification.

Production authentication and authorization systems following OWASP Top 10, NIST SP 800-63B, and patterns from Auth0, AWS Cognito, and OWASP Cheat Sheet Series.

Generate brand guidelines, design systems with design tokens (W3C format), creative direction (SCAMPER, Design Thinking, TRIZ), and design briefs with scope and success criteria.

Generate sales outreach sequences, proposals, SOWs, investor pitch decks, and RFP responses. Covers cold email sequences, proposal structure, pricing tiers (Good-Better-Best), scope of work with exclusions, and 10-slide pitch deck.

Gestiona la base de vectores que almacena la memoria persistente del ecosistema.

Scan directories, detect old/unused files, analyze importance with AI, and move junk to Recycle Bin. Presents a categorized report and asks confirmation before acting. Use when user says "clean up", "declutter", "organize files", "remove old stuff", "clear desktop", "free up space", "disk cleanup", "borrar archivos viejos", "ordenar carpetas", "limpiar". Do NOT use for system file cleanup, registry cleaning, or any destructive operation.

Build frontend components that handle every state, are accessible by default, TypeScript strict, and follow framework-specific best practices.

Delegate code review to a subagent running a specific model. Use ONLY when user explicitly names a model to review changes ("review with opus", "use sonnet to review", "review with gemini"). The root agent reconstructs changes from conversation history and spawns a subagent with the code-review skill using the specified model. Do NOT use for general code review (use code-review skill instead), for reviewing PRs from git history, or when no model is specified by the user.

PostgreSQL production operations: backup, restore, monitoring, replication, and maintenance.

Design performant database schemas. Model for access patterns first, normalize later. Based on PostgreSQL internals, Prisma/Drizzle best practices, and production patterns from PlanetScale and Neon.

Brand identity, design systems, creative direction, and project briefs.

Encode Emil Kowalski's philosophy on UI polish, component design, animation decisions, and the invisible details that make software feel great. From the creator of Sonner (13M+ weekly npm downloads), Vaul, animations.dev, and Linear's web team. Use when user wants to polish UI, audit animations, review component interactions, add micro-feedback, or elevate motion quality.

Build observability systems that make debugging fast and production incidents predictable. Based on Google SRE, OpenTelemetry semantic conventions, and production patterns from Sentry and Datadog.

Generate PDFs, resumes, CVs, letters, slide decks, portfolios, one-pagers, white papers, and professional documents. Use when user asks to create a PDF, make a resume, write a letter, design slides, format a document, typeset a report, build a portfolio, make a presentation, or create a one-pager. Warm parchment, ink-blue accent, serif-led hierarchy. CN uses TsangerJinKai02, EN uses Charter, JA uses YuMincho (best-effort). Triggers on Chinese: "做 PDF / 排版 / 一页纸 / 白皮书 / 作品集 / 简历 / PPT / slides". Do NOT use for code formatting, data charts, or wireframes.

Landing pages designed for conversion. Based on data from Unbounce, GoodUI, Refactoring UI, and CXL Institute.

Animations that guide attention, provide feedback, and create hierarchy. Every animation must answer "what does this communicate?"