# Nextjs Core

> Core Next.js patterns for App Router development including Server Components, Server Actions, rou…

Core Next.js patterns for App Router development including Server Components, Server Actions, route handlers, data fetching, and caching strategies

- Page: https://ss33.ai/skills/bobmatnyc/nextjs-core-80007155076
- Publisher: bobmatnyc
- Category: [Software Development](https://ss33.ai/skills/category/software-development-t44z8z) › [Languages & frameworks](https://ss33.ai/skills/category/software-development-t44z8z/languages-and-frameworks-rgvrso)
- License: MIT
- Source: https://github.com/bobmatnyc/claude-mpm-skills/blob/718070a7d622921b01687799a1f9613f36c6f615/toolchains/nextjs/nextjs-core/SKILL.md

## Skill

SKILL.md: https://ss33.ai/api/v1/ss33/download/bobmatnyc/nextjs-core-80007155076

# Next.js Core (App Router)

- Server Components by default; minimal `"use client"`.
- Mutations in Server Actions (validate/authz; revalidate tags/paths).
- Route handlers for APIs/webhooks; add loading/error boundaries.

Anti-patterns:
- ❌ Fetch initial data in `useEffect`.
- ❌ Cache or revalidate too broadly.
- ❌ Client-only authz.

References: see `references/` (server actions, fetching, caching, routing, auth, testing).