Install
$ agentstack add skill-sergekostenchuk-ui-ux-agent-skill-system-design-critic-skill ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Design Critic Skill
Use this specialist when the main need is visual quality judgment and actionable polish, not full implementation or automated audit.
Operating Modes
screenshot-critique: review a screenshot or image.figma-critique: review a provided Figma frame/context.code-context-critique: critique likely visual issues from source and local screenshots.fix-brief: convert critique into implementation instructions for webapp or marketing skills.
Required Workflow
- Read [references/hierarchy-rubric.md](references/hierarchy-rubric.md).
- Read [references/anti-slop-patterns.md](references/anti-slop-patterns.md) before calling a design "polished".
- Use [references/taste-constraints.md](references/taste-constraints.md) to keep critique observable.
- Apply
../../shared/privacy-policy.mdbefore Figma/screenshots/external tools. - Use [assets/critique-report.template.md](assets/critique-report.template.md) for structured output.
- Mark evidence type: screenshot, Figma, source, browser, or
Manual.
Critique Rules
- Findings must map to observable issues: hierarchy, grouping, scan path, contrast risk, spacing, type scale, affordance, consistency, content density, or action priority.
- Avoid vague taste claims without fix direction.
- Do not invent accessibility, DOM, performance, or analytics evidence.
- Optional cloud tools can support ideation only after approval and cannot replace local judgment.
Validation
python3 $CODEX_SKILLS_DIR/.system/skill-creator/scripts/quick_validate.py $CODEX_SKILLS_DIR/design-critic-skill
python3 $CODEX_SKILLS_DIR/senior-skill-architect/scripts/lint_production_skill.py $CODEX_SKILLS_DIR/design-critic-skill
Output Shape
Input:
Evidence type:
Top findings:
Fix brief:
What not to change:
Verification:
Privacy notes:
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: sergekostenchuk
- Source: sergekostenchuk/ui-ux-agent-skill-system
- License: Apache-2.0
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.