performance-doctor

performance-doctor is a skill for Claude Code, Codex from bkywksj/ruoyi-plus-uniapp-docs. It costs 93 tokens per session (3,984 once invoked), scanned A, original, no licence file.

A website performance diagnosis workflow that measures loading and interaction before suggesting changes. It examines Core Web Vitals, which are standard measures of loading speed, responsiveness, and visual stability, along with scripts, images, fonts, caching, and prefetching.

In plain words
What is it for?
Use it to investigate LCP, INP, and CLS issues and to run Lighthouse checks.
Why use it?
It helps replace guesswork with measurements when a site loads slowly, feels unresponsive, or ships too much JavaScript.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to investigate LCP, INP, and CLS issues and to run Lighthouse checks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bkywksj/ruoyi-plus-uniapp-docs/performance-doctor
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.

Any agent
npx skills add bkywksj/ruoyi-plus-uniapp-docs --skill performance-doctor
Clone the repo
git clone --depth 1 https://github.com/bkywksj/ruoyi-plus-uniapp-docs

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 performance-doctor

README.md
[![agentmods](https://agentmods.dev/badge/skills/bkywksj/ruoyi-plus-uniapp-docs/performance-doctor/github.svg)](https://agentmods.dev/skills/bkywksj/ruoyi-plus-uniapp-docs/performance-doctor)
Your own site
<a href="https://agentmods.dev/skills/bkywksj/ruoyi-plus-uniapp-docs/performance-doctor"><img src="https://agentmods.dev/badge/skills/bkywksj/ruoyi-plus-uniapp-docs/performance-doctor/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 performance-doctor

Your own site · 80×15
<a href="https://agentmods.dev/skills/bkywksj/ruoyi-plus-uniapp-docs/performance-doctor"><img src="https://agentmods.dev/badge/skills/bkywksj/ruoyi-plus-uniapp-docs/performance-doctor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,984 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00093 $0.03984
Opus 5.5 $0.00037 $0.01594
Sonnet 5.5 $0.00019 $0.00797
Haiku 4.5 $0.00009 $0.00398

Measured 2d ago against content hash 77f81b161ac9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

performance-doctor 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 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.

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.

.agents/skills/performance-doctor/SKILL.md · 221 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. 2d ago First seen · 221 lines · 93 tokens per session scan A 77f81b161ac9

Subscribe to this mod's changes

performance-doctor is a skill published in the GitHub repository bkywksj/ruoyi-plus-uniapp-docs (50 stars, last pushed yesterday), with no licence file. It adds 93 tokens to every session and 3,984 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-11-01.

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