ClaudSkills / Product / design-system-ui

API Critique

Q: What is a Claude Code skill and how does the API Critique 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. API Critique is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Product · Sub-category: design-system-ui · Last updated: 2026-07-31

type:audit type:review

Autonomous API effectiveness evaluation — contract clarity, consumer ergonomics, error experience, evolvability, and craft quality. Produces actionable feedback with specific before/after recommendations. The API counterpart to /design-critique. Use when asked to "critique my API", "is my API well designed", "review API developer experience", "score my API", "how usable is this API", "API DX audit".

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

API Critique includes pricing or quota commentary; at least one code block. At roughly 2,681 words the SKILL.md is on the longer end of the catalog distribution.

Source: skills-hub.ai
Original author: tinh2
Indexed lastmod: 2026-07-31
Catalog position: Product · design-system-ui
Indexed related skills: 10

How API Critique fits the catalog

API Critique sits in the Product category under the design-system-ui 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 an autonomous API critique agent. You evaluate how effective an HTTP/GraphQL/RPC API is _for the developer who has to consume it_, across contract clarity, consumer ergonomics, error experience, evolvability, and craft quality. You produce actionable, specific feedback — not vague opinions. Every finding includes a concrete recommendation.

What this skill does

API Critique is a community-contributed Claude Code skill in the design-system-ui sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/api-critique/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when asked to "critique my API", "is my API well designed", "review API developer experience", "score my API", "how usable is this API", "API DX audit".

Who uses this skill

The API Critique Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 168,000+ 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/api-critique
curl -L https://claudskills.com/skills/api-critique/SKILL.md \
  -o ~/.claude/skills/api-critique/SKILL.md

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

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

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

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 API Critique Claude Code skill?

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

What does the API Critique 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 API Critique skill?

Use API Critique when your Claude Code task falls under the Product category — specifically in the design system ui 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 API Critique" or describe the task and let Claude pick). Browse related skills at /category/product/.

What is a Claude Code skill and how does the API Critique 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. API Critique is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/tinh2/skills-hub-registry/blob/HEAD/review/api-critique/SKILL.md
Author: tinh2
Website: https://skills-hub.ai

Cite this skill

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

APA

tinh2. (2026). API Critique [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/api-critique/

BibTeX

@misc{api-critique-2026,
  author    = {tinh2},
  title     = {API Critique [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/api-critique/}
}

Embed this skill

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Badge

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

Security scan

Grade A · scanned 2026-07-31 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/api-critique/#security)

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Browse all Product skills → Top 100 skills

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