Perf Budget Check

Q: What is a Claude Code skill and how does the Perf Budget Check skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Perf Budget Check is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: business-ops · Last updated: 2026-06-03

Compare Core Web Vitals (LCP/INP/CLS) and bundle size against the project's perf budget; fail the PR if regressed

About this skill (catalog notes)

Perf Budget Check includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); at least one code block. The SKILL.md runs to about 911 words, in the catalog's typical mid-range.

License: Apache-2.0
Original author: bakw00ds
Indexed lastmod: 2026-06-03
Catalog position: General · business-ops
Indexed related skills: 10

How Perf Budget Check fits the catalog

Perf Budget Check sits in the General category under the business-ops sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

What this skill does

Perf Budget Check is a community-contributed Claude Code skill in the business-ops sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/perf-budget-check/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Perf Budget Check Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 85,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/perf-budget-check
curl -L https://claudskills.com/skills/perf-budget-check/SKILL.md \
  -o ~/.claude/skills/perf-budget-check/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/perf-budget-check/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/perf-budget-check/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\perf-budget-check\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Perf Budget Check Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/perf-budget-check/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Perf Budget Check skill do?

Compare Core Web Vitals (LCP/INP/CLS) and bundle size against the project's perf budget; fail the PR if regressed

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Perf Budget Check skill?

Use Perf Budget Check when your Claude Code task falls under the General category — specifically in the business ops area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Perf Budget Check" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Perf Budget Check skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Perf Budget Check is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/bakw00ds/yakos/blob/HEAD/lib/skills/perf-budget-check/SKILL.md
License: Apache-2.0
Author: bakw00ds

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

bakw00ds. (2026). Perf Budget Check [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/perf-budget-check/

BibTeX

@misc{perf-budget-check-2026,
  author    = {bakw00ds},
  title     = {Perf Budget Check [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/perf-budget-check/}
}

Embed this skill

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Badge

[![ClaudSkills](https://claudskills.com/badge/perf-budget-check.svg)](https://claudskills.com/skills/perf-budget-check/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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