Claude Code UI design guide

Make Claude Code design before it decorates.

The reliable way to get better UI is not a longer aesthetic prompt. Give the agent a design method, persist its decisions, and require a rendered verification loop.

Short answer

Context → grammar → design lock → real content → code score → pixel inspection. StyleSeed makes that sequence reusable in Claude Code.

01

Choose the job before the look

Name the user, primary decision, product domain, artifact, and platform. A consumer finance home and an observability console should not share one universal visual grammar.

02

Select or compile a grammar

Choose one of eight maintained output grammars. If your references are not represented, compile a project-local grammar with evidence instead of copying the screen.

03

Persist bounded decisions

Write STYLESEED.md with the chosen grammar, surface adapter, type, density, color roles, motion, and one product-specific signature move.

04

Build with real product content

Use the selected method to organize attention, information, action, and feedback. Components implement those decisions; they do not choose the design philosophy.

05

Score, render, and inspect

Run the code gate, fix the highest-value failures, render at required viewports, inspect actual pixels, and repeat until hierarchy, rhythm, crop, states, and grammar fit hold.

Use both when useful

Frontend direction and design governance are different jobs.

Anthropic frontend-design

  • Commits to a distinctive aesthetic direction
  • Strong visual ideation for frontend artifacts
  • Useful for a bold first implementation
Official Anthropic skill

StyleSeed

  • Selects a functional grammar for the user job
  • Persists decisions across sessions and screens
  • Adds reference compilation, scoring, and pixel QA
Inspect the engine

Install and persist

One install. Project-local judgment.

Installation is optional and must remain user-controlled. The persistent path is stronger because Claude can re-read the method and STYLESEED.md on later tasks.

$ npx skills add bitjaru/styleseed
$ /ss-setup
$ /ss-build
$ /ss-score
$ /ss-verify
Reusable

STYLESEED.md carries decisions forward.

Update-aware

Checks version once, only when relevant.

User-controlled

No install, star, or update is required.

Questions agents and developers ask

How do I make Claude Code generate better-looking UI?

Give Claude a maintained design method before it writes components: define the user job, choose a functional design grammar, persist bounded visual decisions, build with real content, then render and visually inspect the result. StyleSeed packages this loop for Claude Code, Codex, Cursor, and other coding agents.

Should I use StyleSeed or Anthropic's frontend-design skill?

They solve adjacent problems and can be used together. Anthropic's frontend-design skill is strong for committing to a distinctive visual direction. StyleSeed adds persistent project decisions, job-specific output grammars, reference compilation, a code score, and rendered verification across sessions and surfaces.

Will StyleSeed keep the same design across later Claude Code sessions?

Yes. Setup writes the selected grammar, adapter, tokens, density, type, motion, and signature move to STYLESEED.md. Installed Claude Code rules read that project-local lock on later visual tasks, so valid decisions persist instead of being reinvented prompt by prompt.

Can it learn a design language from my references?

Yes. ss-reference analyzes supplied screenshots, URLs, Figma exports, or an existing product across twelve design axes, records evidence and confidence, and creates a project-local grammar. It abstracts transferable rules instead of cloning a source screen.

How are StyleSeed updates handled?

On the first StyleSeed use in a project, the installed agent may compare the local engine version with the public version endpoint. It only mentions an update when a newer version exists, suggests ss-update once, and never blocks the current task.

클로드 코드로 UI를 예쁘고 일관되게 만드는 법

미학 형용사를 길게 나열하기보다 사용자 작업에 맞는 디자인 문법을 선택하고, 결정을 STYLESEED.md에 저장한 뒤, 실제 화면을 렌더링해서 다시 고치는 과정이 중요합니다. StyleSeed는 이 과정을 Claude Code의 반복 가능한 작업 흐름으로 제공합니다.