The classic Gestalt demonstrations of closure use simple shapes with strategic gaps. A "circle" made of 12 dot pairs around its circumference reads as a circle, not as 24 dots. A "triangle" formed by three Pac-Man-shaped figures (the Kanizsa triangle) is perceived clearly even though no triangle is actually drawn — only the gaps imply one.
Closure is a community-contributed Claude Code skill in the design-creative sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/closure/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when designing icons (a few strokes can imply a closed shape), illustrations (negative space defines forms), logos (the IBM stripes, the WWF panda, the FedEx arrow), card layouts (cards don''t need full borders to feel like containers), or any visual that benefits from suggested rather than fully drawn shapes. Closure lets you communicate more with less; the user''s perception completes the form.
The Closure 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 178,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/closure curl -L https://claudskills.com/skills/closure/SKILL.md \ -o ~/.claude/skills/closure/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/closure/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/closure/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\closure\SKILL.md on Windows. See the full install guide for step-by-step instructions.
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 →
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.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
SKILL.md from the source repository to ~/.claude/skills/closure/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.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. Closure 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/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{closure-2026,
author = {Alex0nder},
title = {Closure [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/closure/}
}Grade A · scanned 2026-08-07 — 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 ›
Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.