monorepo: Skill for Claude Code

.agents/skills/react-doctor/SKILL.md

react-doctor is a skill for Claude Code, Codex from lootlog/monorepo. It costs 70 tokens per session (694 once invoked), scanned A, a copy of react-doctor, MIT.

A React code-quality checker that scans a React codebase for security, performance, correctness, architecture, accessibility, and design issues. React is a JavaScript library for building user interfaces.

In plain words
What is it for?
It is for checking changed files or a whole project, reviewing UI design, and sorting detected problems by severity.
Why use it?
It helps find regressions and cleanup work after React changes, before committing code, or during a broader health check.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is lootlog/monorepo's own configuration. It tells Claude Code and Codex how to work on monorepo itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything monorepo configures →

Reuse

Borrowing it

Nothing to install: this file belongs to lootlog/monorepo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/lootlog/monorepo/main/.agents/skills/react-doctor/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/lootlog/monorepo

Made for: Claude Code, Codex.

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-doctor

README.md
[![agentmods](https://agentmods.dev/badge/skills/lootlog/monorepo/react-doctor.svg)](https://agentmods.dev/skills/lootlog/monorepo/react-doctor)
Your own site
<a href="https://agentmods.dev/skills/lootlog/monorepo/react-doctor"><img src="https://agentmods.dev/badge/skills/lootlog/monorepo/react-doctor.svg" alt="Measured on agentmods" height="20"></a>
Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 694 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 78% copy Near-identical to another mod 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 $0.00070 $0.00694
Opus 5 $0.00035 $0.00347
Sonnet 5 $0.00014 $0.00139
Haiku 4.5 $0.00007 $0.00069

Measured 2d ago against content hash 48aa353031da, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

react-doctor 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 2d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl --fail --silent --show-error \
Origin

This is a copy

78% identical to react-doctor — 30 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/react-doctor/SKILL.md · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

React Doctor

Scans React codebases for security, performance, correctness, and architecture issues. Outputs a 0–100 health score.

After making React code changes:

Run npx react-doctor@latest --verbose --scope changed and check the score did not regress.

If the score dropped, fix the regressions before committing.

For general cleanup or code improvement:

Run npx react-doctor@latest --verbose (the default --scope full) to scan the full codebase. Fix issues by severity — errors first, then warnings.

For a focused UI design audit:

Run npx react-doctor@latest design --verbose. This selects only design-tagged UI composition, typography, interaction, accessibility, and motion rules, including focused rules that remain opt-in during a general health scan.

/doctor — full local triage workflow

When the user types /doctor, says "run react doctor", or asks for a full triage / cleanup pass (not just a regression check), fetch the canonical local-triage playbook and follow every step in it:

curl --fail --silent --show-error \
  --header 'Cache-Control: no-cache' \
  https://www.react.doctor/prompts/react-doctor-agent.md

The playbook is the single source of truth — a scan → filter → triage → fix → validate loop that edits the working tree directly (never commits, never opens PRs). Updating the prompt at its source updates every agent on its next fetch — no skill reinstall needed.

Pair it with the matching per-rule prompts at https://www.react.doctor/prompts/rules/<plugin>/<rule>.md (fetched on demand inside the playbook) so each fix uses the canonical, reviewer-tested recipe.

Configuring or explaining rules

When the user wants to understand a rule, disagrees with one, or wants to disable / tune which rules run (not fix code), read references/explain.md and follow it. Start with npx react-doctor@latest rules explain <rule>, then apply the narrowest control via npx react-doctor@latest rules disable|set|category|ignore-tag …, which edits your doctor.config.* (or package.json#reactDoctor).

Read the full file on GitHub · 57 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 57 lines · 70 tokens per session scan A 48aa353031da

Subscribe to this mod's changes

react-doctor is a skill published in the GitHub repository lootlog/monorepo (10 stars, last pushed 2d ago), licensed MIT. It adds 70 tokens to every session and 694 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 78% identical to react-doctor, differing in 30 lines, and is treated as a copy.

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