Forge Performance

Q: What is a Claude Code skill and how does the Forge Performance 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. Forge Performance 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: operations · Last updated: 2026-06-01

type:audit

Web performance discipline. Core Web Vitals (LCP, INP, CLS), image optimization (modern formats + responsive srcset + lazy loading), JS bundle discipline (code-split + tree-shake), critical CSS, font loading without FOIT/FOUT, prefetching that pays off. Contains paste-ready image and font patterns + bundle audit checklist. Use when building user-facing web UI that should feel fast on real devices.

About this skill (catalog notes)

Forge Performance includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); pricing or quota commentary; 15 code blocks for direct copy-paste. At roughly 1,534 words the SKILL.md is on the longer end of the catalog distribution.

Source: f4rkh4d.github.io/forge-skill
License: MIT
Original author: f4rkh4d
Indexed lastmod: 2026-06-01
Catalog position: General · operations
Indexed related skills: 10

How Forge Performance fits the catalog

Forge Performance sits in the General category under the operations 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.

From the source SKILL.md

You are writing web UI that real users will load on real devices over real networks. Default agent-written frontend ships 3MB of JavaScript, 4MB of unoptimized images, and 8 web fonts before the first paint. The Lighthouse score is 38 and the user closes the tab. This skill exists to fix that.

What this skill does

Forge Performance is a community-contributed Claude Code skill in the operations sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/forge-performance/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when building user-facing web UI that should feel fast on real devices.

Who uses this skill

The Forge Performance 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 77,000+ 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/forge-performance
curl -L https://claudskills.com/skills/forge-performance/SKILL.md \
  -o ~/.claude/skills/forge-performance/SKILL.md

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

Skills live at ~/.claude/skills/forge-performance/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\forge-performance\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 Forge Performance Claude Code skill?

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

What does the Forge Performance skill do?

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 Forge Performance skill?

Use Forge Performance when your Claude Code task falls under the General category — specifically in the operations 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 Forge Performance" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Forge Performance 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. Forge Performance 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/f4rkh4d/forge-skill/blob/HEAD/skills/design/forge-performance/SKILL.md
License: MIT
Author: f4rkh4d
Website: https://f4rkh4d.github.io/forge-skill/

Cite this skill

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

APA

f4rkh4d. (2026). Forge Performance [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/forge-performance/

BibTeX

@misc{forge-performance-2026,
  author    = {f4rkh4d},
  title     = {Forge Performance [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/forge-performance/}
}

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