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UI Designer · zebbern | DecimalAI

design mediaby zebbern

UI Designer

zebbern/design-system-builder

Source zebbern/claude-code-guide ↗License MIT

Extract design systems from reference UI images and generate implementation-ready UI design prompts.

SkillScore77Maintained

Automatic

Design & UX Review pack

Last verified 8/10/2026

What it changes

Passed 15 of 20 test cases with the skill, and 4 of 20 without it.

Without skill18%

With skill77%

Checks it passed that the model alone missed

Specifies 2 web layout variations
Identifies placeholder token {项目背景}
Defines spacing scale range from 4dp to 48dp

and 12 more in the full report

13 fixed4 passed either way5 still failing0 broke

Pass-rate lift: +59 pp
Tokens: +46%
Agent turns: 0%
Response time: -49%

Model gemini-3.6-flashMeasured 8/10/2026v117 of 22 cases passed with skill · 20 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/zebbern-design-system-builder/SKILL.md https://app.decimal.ai/s/zebbern-design-system-builder/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add zebbern-design-system-builder, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/zebbern-design-system-builder/ and pins it in .decimal/skills.lock

decimalai skills add zebbern-design-system-builder

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/zebbern-design-system-builder/SKILL.md https://app.decimal.ai/s/zebbern-design-system-builder/SKILL.md

Raw file: /s/zebbern-design-system-builder/SKILL.md ↗ · machine-readable summary at /s/zebbern-design-system-builder.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 13 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 13

Prompt

When populating `assets/vibe-design-template.md` to create the final UI prompt, which specific template variables host the design system guidelines and product requirements document respectively?

What was checked, without and with the skill
Checked	Without skill	With skill
Identifies placeholder token {项目设计指南} for design system content	Missed	Passed
Identifies placeholder token {项目MVP PRD} for PRD content	Missed	Passed

case-06 · gemini-3.6-flash · 8/10/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md186 lines4 files

UI Designer

Overview

This skill enables systematic extraction of design systems from reference UI images through a multi-step workflow: analyze visual patterns → generate design system documentation → create PRD → produce implementation-ready UI prompts.

When to Use

User provides UI screenshots, mockups, or design references
Need to extract color palettes, typography, spacing from existing designs
Want to generate design system documentation from visual examples
Building MVP UI that should match reference aesthetics
Creating multiple UI variations following consistent design principles

Workflow

Step 1: Gather Inputs

Request from user:

Reference images directory: Path to folder containing UI screenshots/mockups
Project idea file: Document describing the product concept and goals
Existing PRD (optional): If PRD already exists, skip Step 3

Step 2: Extract Design System from Images

Use Task tool with general-purpose subagent, providing:

Prompt template from assets/design-system.md:

Analyze color palettes (primary, secondary, accent, functional colors)
Extract typography (font families, sizes, weights, line heights)
Identify component styles (buttons, cards, inputs, icons)
Document spacing system
Note animations/transitions patterns
Include dark mode variants if present

Attach reference images to the subagent context.

Output: Complete design system markdown following the template format

Save to: documents/designs/{image_dir_name}_design_system.md

Track record

Benchmark

15 / 20

test cases passed, vs 4 / 20 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

zebbern / claude-code-guide

skills/design-system-builder/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1Bundled 3 files

More skills from the same source and nearby in the registry, with their headline benchmark lift.

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See it in action

What's inside

UI Designer

Overview

When to Use

Workflow

Step 1: Gather Inputs

Step 2: Extract Design System from Images

Track record

Benchmark

Adoption

SkillSafety

Source

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