AGENTS.md@public/files/cal-diy/.opencode/skill/vercel-react-best-practicesB
This file is byte-identical to the first copy the registry indexed, one of 4 indexed copies. Same content hash, so the same checks give both the same grade.
AGENTS.md@public/files/cal-diy/.opencode/skill/vercel-react-best-practices from modem-dev/ossrules is an AGENTS.md file: the standing instructions coding agents read in that repo.
mdr add modem-dev/ossrules/public/files/cal-diy/.opencode/skill/vercel-react-best-practices/AGENTS.md@git:20260917.a2709ecPins git:20260917.a2709ec in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 13 of 14 checks passed
- Kind
- AGENTS.md file
- Repository
- modem-dev/ossrules
- Path
public/files/cal-diy/.opencode/skill/vercel-react-best-practices/AGENTS.md- Versions recorded
- 1
- Latest version
- git:20260917.a2709ec, committed Sep 17, 2026
- Size
- 60,535 bytes
- Repository stars
- 65
- 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
mdr add modem-dev/ossrules/public/files/cal-diy/.opencode/skill/vercel-react-best-practices/AGENTS.md@sha256:70ea9d85b44f54b3The line at the top of this page pins the label git:20260917.a2709ec, 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.
[](https://markdownregistry.com/a/art_nfxrordios4h4pue)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 17, 2026.
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Size between 200 bytes and 200 KB (60535 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
modem-dev/ossrules · 65 stars · license MIT · pushed 2026-09-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nfxrordios4h4pue GET https://markdownregistry.com/api/v1/resolve?ref=modem-dev/ossrules/public/files/cal-diy/.opencode/skill/vercel-react-best-practices/AGENTS.md GET https://markdownregistry.com/api/v1/blob/70ea9d85b44f54b38ad3af64a163d767cb5fa865db2c14cdebd8a977df589395
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.