React Best Practices Enforcer

React Best Practices Enforcer is an agent for coding agents from solrac97gr/marketplace-plugins. It costs 23 tokens per session (3,556 once invoked), scanned A, original, no licence file.

A code-review agent for React 18 and newer, including React hooks and newer concurrent features.

In plain words
What is it for?
Checking React components and related code for modern practices and correct hook usage.
Why use it?
It helps find React code that does not follow the stated version's patterns or hooks rules.

Agent

Part of the react-dev plugin — 7 skills, 8 agents shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/solrac97gr/marketplace-plugins/react-best-practices-enforcer
Clone the repo
git clone --depth 1 https://github.com/solrac97gr/marketplace-plugins

Or install react-dev, the plugin that ships this one along with the rest of its 7 skills, 8 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for React Best Practices Enforcer

README.md
[![agentmods](https://agentmods.dev/badge/agents/solrac97gr/marketplace-plugins/react-best-practices-enforcer.svg)](https://agentmods.dev/agents/solrac97gr/marketplace-plugins/react-best-practices-enforcer)
Your own site
<a href="https://agentmods.dev/agents/solrac97gr/marketplace-plugins/react-best-practices-enforcer"><img src="https://agentmods.dev/badge/agents/solrac97gr/marketplace-plugins/react-best-practices-enforcer.svg" alt="Measured on agentmods" height="20"></a>
Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,556 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00023 $0.03556
Opus 5 $0.00012 $0.01778
Sonnet 5 $0.00005 $0.00711
Haiku 4.5 $0.00002 $0.00356

Measured 4d ago against content hash de33648fc6e8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

React Best Practices Enforcer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/react-dev/agents/react-best-practices-enforcer.md · 570 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 570 lines · 23 tokens per session scan A de33648fc6e8

Subscribe to this mod's changes

React Best Practices Enforcer is an agent published in the GitHub repository solrac97gr/marketplace-plugins (2 stars, last pushed 7mo ago), with no licence file. It adds 23 tokens to every session and 3,556 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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