sumi: UX/UI design intelligence for Claude Code: 43 skills, 168 references, 37 commands, an anti-slop engine

by phazurlabs · Claude Skill · ★ 56

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install sumi

/plugin marketplace add phazurlabs/sumi
/plugin install sumi@sumi-marketplace

Taken from the project's README on GitHub. Check the security audit before running it.

Security audit verdict: SAFE · quality 59/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

Quick Facts

Stars56
Forks12
LanguagePython
CategoryClaude Skill
LicenseApache-2.0
Quality Score59/100
Open Issues4
Last Updated2026-09-28
Created2026-02-14
Platformsclaude-code, python
Est. Tokens~17k

About sumi

Sumi Design intelligence for Claude Code. Sumi gives Claude the working knowledge of a senior product designer — cognitive psychology, usability heuristics, accessibility law, design systems, and production component code — and the commands to act on it.

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

View on GitHub → Browse Claude Skill tools