nk-skills

Audits and optimizes Next.js App Router APIs using measured request timing, cookie-first authentication, Server Component prefetching, PostgreSQL query tuning, Drizzle transaction patterns, caching, and durable background work. Use when API routes, server rendering, database queries, authentication, mutations, or loading UX are slow.

Embed AI features in Next.js product apps using Vercel AI SDK. Covers streaming chat, tool calling with Zod, rate limiting, and auth — integrated into the product-stack 9-layer architecture. Use when adding chat, copilots, AI search, or agent features to a SaaS product.