react18-auditor

react18-auditor is an agent for Claude Code from asleekgeek/claude-multiagent-catalogue. It costs 74 tokens per session (3,753 once invoked), scanned A, original, no licence file.

A read-only audit agent for React 16 and 17 class-component codebases being prepared for React 18.3.1. It records compatibility risks in a Markdown report.

In plain words
What is it for?
Use it to inspect a React codebase and produce a focused React 18 migration audit.
Why use it?
It helps find migration problems before code is changed, including outdated lifecycle methods, context, refs, event assumptions, and React 18.3.1 deprecations.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to inspect a React codebase and produce a focused React 18 migration audit.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/asleekgeek/claude-multiagent-catalogue/react18-auditor
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.

Clone the repo
git clone --depth 1 https://github.com/asleekgeek/claude-multiagent-catalogue

Made for: Claude Code.

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 react18-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/asleekgeek/claude-multiagent-catalogue/react18-auditor/github.svg)](https://agentmods.dev/agents/asleekgeek/claude-multiagent-catalogue/react18-auditor)
Your own site
<a href="https://agentmods.dev/agents/asleekgeek/claude-multiagent-catalogue/react18-auditor"><img src="https://agentmods.dev/badge/agents/asleekgeek/claude-multiagent-catalogue/react18-auditor/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for react18-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/asleekgeek/claude-multiagent-catalogue/react18-auditor"><img src="https://agentmods.dev/badge/agents/asleekgeek/claude-multiagent-catalogue/react18-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,753 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00074 $0.03753
Opus 5 $0.00037 $0.01877
Sonnet 5 $0.00015 $0.00751
Haiku 4.5 $0.00007 $0.00375

Measured 7d ago against content hash 8ce08770215e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

react18-auditor scanned grade A with 1 finding 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 7d 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.

Unrestricted tool accesslowExcessive agency

A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.

- #tool:* prefix stripped

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

agents/react18-auditor.md · 372 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. 7d ago First seen · 372 lines · 74 tokens per session scan A 8ce08770215e

Subscribe to this mod's changes

react18-auditor is an agent published in the GitHub repository asleekgeek/claude-multiagent-catalogue (2 stars, last pushed 3mo ago), with no licence file. It adds 74 tokens to every session and 3,753 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (unrestricted tool access). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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