AGENTS.md@plugins/react-best-practices/skills/react-best-practicesB

AGENTS.md@plugins/react-best-practices/skills/react-best-practices from secondsky/claude-skills is an AGENTS.md file: the standing instructions coding agents read in that repo.

Install it, pinned
mdr add secondsky/claude-skills/plugins/react-best-practices/skills/react-best-practices/AGENTS.md@git:20260803.9dc9ea3

Pins git:20260803.9dc9ea3 in mdr.lock. Pin the fingerprint instead.

Audit grade
B, 13 of 14 checks passed
Kind
AGENTS.md file
Repository
secondsky/claude-skills
Path
plugins/react-best-practices/skills/react-best-practices/AGENTS.md
Versions recorded
2
Latest version
git:20260803.9dc9ea3, committed Aug 3, 2026
First version recorded
Jan 17, 2026
Size
65,536 bytes
Repository stars
247
License
MIT

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# React Best Practices

**Version 1.0.0**  
Vercel Engineering  
January 2026

> **Note:**  
> This document is mainly for agents and LLMs to follow when maintaining,  
> generating, or refactoring React and Next.js codebases at Vercel. Humans  
> may also find it useful, but guidance here is optimized for automation  
> and consistency by AI-assisted workflows.

---

## Abstract

Comprehensive performance optimization guide for React and Next.js applications, designed for AI agents and LLMs. Contains 40+ rules across 8 categories, prioritized by impact from critical (eliminating waterfalls, reducing bundle size) to incremental (advanced patterns). Each rule includes detailed explanations, real-world examples comparing incorrect vs. correct implementations, and specific impact metrics to guide automated refactoring and code generation.

---

## Table of Contents

1. [Eliminating Waterfalls](#1-eliminating-waterfalls) — **CRITICAL**
   - 1.1 [Defer Await Until Needed](#11-defer-await-until-needed)
   - 1.2 [Dependency-Based Parallelization](#12-dependency-based-parallelization)
   - 1.3 [Prevent Waterfall Chains in API Routes](#13-prevent-waterfall-chains-in-api-routes)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add secondsky/claude-skills/plugins/react-best-practices/skills/react-best-practices/AGENTS.md@sha256:755a17a0dfc0fca6

The line at the top of this page pins the label git:20260803.9dc9ea3, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_gbwsgdwvqhvg3fs3.svg)](https://markdownregistry.com/a/art_gbwsgdwvqhvg3fs3)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Jan 17, 2026 and Aug 3, 2026, about one every 198 days.

versioncommittedcommitsizeaudit
git:20260803.9dc9ea3 latest2026-08-03 9dc9ea3 65,536 BB view · diff
git:20260117.57fc7f12026-01-17 57fc7f1 65,538 BB view

Audit of the latest version

B  13 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • fail: No script tag (matched: <script)
  • pass: Size between 200 bytes and 200 KB (65536 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address

Starting a new one? Use a template for AGENTS.md on mdpantry, which passes every one of these checks and says what to change in it.

Source

GitHub

secondsky/claude-skills · 247 stars · license MIT · pushed 2026-10-31 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_gbwsgdwvqhvg3fs3
GET https://markdownregistry.com/api/v1/resolve?ref=secondsky/claude-skills/plugins/react-best-practices/skills/react-best-practices/AGENTS.md
GET https://markdownregistry.com/api/v1/blob/755a17a0dfc0fca6c1674f5cf697fca15d995aa5bd507e0e551a5aad99044c0f

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: how to write a good AGENTS.md · AGENTS.md vs CLAUDE.md · which agent file does what.

More from secondsky/claude-skills

AGENTS.md AGENTS.md file
secondsky/claude-skills · AGENTS.md
git:20260829.7ecf025 · audit A · 247 stars
CLAUDE.md CLAUDE.md file
secondsky/claude-skills · CLAUDE.md
git:20260917.a0994f7 · audit A · 247 stars
aceternity-ui SKILL.md skill
secondsky/claude-skills · plugins/aceternity-ui/skills/aceternity-ui/SKILL.md · 100+ animated React components (Aceternity UI) for Next.js with Tailwind. Use for hero sections, parallax, 3D effects…
v1.1.0 · audit A · 247 stars
api-authentication SKILL.md skill
secondsky/claude-skills · plugins/api-authentication/skills/api-authentication/SKILL.md · Secure API authentication with JWT, OAuth 2.0, API keys. Use for authentication systems, third-party integrations…
git:20260402.75421fa · audit A · 247 stars
api-changelog-versioning SKILL.md skill
secondsky/claude-skills · plugins/api-changelog-versioning/skills/api-changelog-versioning/SKILL.md · Creates comprehensive API changelogs documenting breaking changes, deprecations, and migration strategies for API…
git:20260402.75421fa · audit A · 247 stars
api-contract-testing SKILL.md skill
secondsky/claude-skills · plugins/api-contract-testing/skills/api-contract-testing/SKILL.md · Verifies API contracts between services using consumer-driven contracts, schema validation, and tools like Pact. Use…
git:20260402.75421fa · audit A · 247 stars
api-design-principles SKILL.md skill
secondsky/claude-skills · plugins/api-design-principles/skills/api-design-principles/SKILL.md · Master REST and GraphQL API design principles to build intuitive, scalable, and maintainable APIs that delight…
git:20260402.75421fa · audit A · 247 stars
api-error-handling SKILL.md skill
secondsky/claude-skills · plugins/api-error-handling/skills/api-error-handling/SKILL.md · Implements standardized API error responses with proper status codes, logging, and user-friendly messages. Use when…
git:20260402.75421fa · audit A · 247 stars
api-filtering-sorting SKILL.md skill
secondsky/claude-skills · plugins/api-filtering-sorting/skills/api-filtering-sorting/SKILL.md · Builds flexible API filtering and sorting systems with query parameter parsing, validation, and security. Use when…
git:20260402.75421fa · audit A · 247 stars
api-gateway-configuration SKILL.md skill
secondsky/claude-skills · plugins/api-gateway-configuration/skills/api-gateway-configuration/SKILL.md · Configures API gateways for routing, authentication, rate limiting, and request transformation in microservice…
git:20260402.75421fa · audit A · 247 stars
api-pagination SKILL.md skill
secondsky/claude-skills · plugins/api-pagination/skills/api-pagination/SKILL.md · Implements efficient API pagination using offset, cursor, and keyset strategies for large datasets. Use when building…
git:20260402.75421fa · audit A · 247 stars
api-rate-limiting SKILL.md skill
secondsky/claude-skills · plugins/api-rate-limiting/skills/api-rate-limiting/SKILL.md · Implements API rate limiting using token bucket, sliding window, and Redis-based algorithms to protect against abuse…
git:20260402.75421fa · audit A · 247 stars

Every file in secondsky/claude-skills

Browse by kind, by grade B, or by owner.