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Apidesign

Category: Engineering  ·  Sub-category: backend  ·  Last updated:
Design stable, hard-to-misuse interfaces — REST/GraphQL endpoints, module boundaries, type contracts, component props, anything where one piece of code talks to another. Use at design time, before implementing the surface. Triggers: 'design this API', 'API contract', 'endpoint design', 'module boundary', 'interface design', 'should this be one endpoint or two', 'how should this API look'.
Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Apidesign includes at least one code block. The SKILL.md runs to about 1,033 words, in the catalog's typical mid-range.

Source
skills.vanducng.dev
License
MIT
Original author
vanducng
Indexed lastmod
Catalog position
Engineering · backend
Indexed related skills
10

How Apidesign fits the catalog

Apidesign sits in the Engineering category under the backend 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

A contract is a commitment. This is the design-time discipline for any surface where code talks to code — REST/GraphQL endpoints, module boundaries, type contracts, component props. Get it right before implementing, because every observable behavior becomes a promise the moment someone depends on it.

What this skill does

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

Who uses this skill

The Apidesign Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 158,000+ 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/apidesign
curl -L https://claudskills.com/skills/apidesign/SKILL.md \
  -o ~/.claude/skills/apidesign/SKILL.md

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

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

Telegram

📱 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 Apidesign Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/apidesign/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Apidesign skill do?
Design stable, hard-to-misuse interfaces — REST/GraphQL endpoints, module boundaries, type contracts, component props, anything where one piece of code talks to another. Use at design time, before implementing the surface. Triggers: 'design this API', 'API contract', 'endpoint design', 'module boundary', 'interface design', 'should this be one endpoint or two', 'how should this API look'.
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 Apidesign skill?
Use Apidesign when your Claude Code task falls under the Engineering category — specifically in the backend 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 Apidesign" or describe the task and let Claude pick). Browse related skills at /category/engineering/.
What is a Claude Code skill and how does the Apidesign 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. Apidesign is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

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

APA
vanducng. (2026). Apidesign [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/apidesign/
BibTeX
@misc{apidesign-2026,
  author    = {vanducng},
  title     = {Apidesign [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/apidesign/}
}

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Security scan

Grade A · scanned 2026-07-23 — 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 ›

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

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

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More Engineering skills

Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Engineering skills → Top 100 skills
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