next-best-practices

Detect and correct Next.js App Router best-practice violations in code and architecture.

Updated Apr 1, 2026
One-click install
npx skills add https://github.com/jaimedhenriques/finsyt --skill next-best-practices-jaimedhenriques
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: next-best-practices
Source: https://github.com/jaimedhenriques/finsyt/tree/main/.agents/skills/next-best-practices
Command: npx skills add https://github.com/jaimedhenriques/finsyt --skill next-best-practices-jaimedhenriques

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps engineers avoid subtle Next.js App Router mistakes that cause broken routing, rendering mismatches, async API bugs, and inefficient production builds.

Core Features & Use Cases

  • File conventions and routing: special files, dynamic segments, route groups, parallel routes, intercepting routes, and the middleware-to-proxy rename.
  • React Server Component boundaries: detect invalid async client components, non-serializable props, and Server Action exceptions.
  • Production patterns: async params, cookies, headers, metadata, error handling, route handlers, data fetching, image and font optimization, bundling, hydration, suspense, self-hosting, and debugging.
  • Use case: review a page, layout, or route handler and return the safest Next.js-compliant fix before it reaches production.

Quick Start

Review my Next.js file or snippet and point out any App Router best-practice violations, then rewrite it to follow the recommended patterns.

Frequently Asked Questions about next-best-practices

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I fix Next.js App Router best-practice violations in server and client components?

To fix Next.js App Router best-practice violations, review your routing files to detect invalid async client components, non-serializable props, and Server Action exceptions, then apply production-safe conventions.

What is the best way to handle async params, cookies, and headers in Next.js App Router?

Handling async params, cookies, and headers in Next.js App Router requires validating file conventions, runtime selection, and cache-safe async handling to prevent rendering mismatches and async API bugs.

How do I optimize bundling, hydration, and suspense for Next.js production builds?

Optimizing bundling, hydration, and suspense for Next.js production builds involves applying image and font optimization, validating serializable props, and ensuring proper component boundaries.

Can I use this to review route handlers and error flows before deploying Next.js?

Yes, you can review route handlers and error flows before deploying Next.js by checking production patterns, metadata handling, and self-hosting conventions to ensure safest compliant code.

Why does my Next.js code have broken routing and rendering mismatches?

Broken routing and rendering mismatches in Next.js often occur due to subtle App Router mistakes like invalid file conventions, middleware-to-proxy rename issues, or non-serializable props.

Does this Next.js review support parallel routes, intercepting routes, and route groups?

Yes, this Next.js review supports parallel routes, intercepting routes, and route groups by validating special files, dynamic segments, and file conventions to correct architecture violations.