UI UX Pro Max skill vs frontend-design for Claude Code

A UI design skill gives Claude Code instructions for interface work. Anthropic's frontend-design skill guides visual decisions before the agent writes code. UI UX Pro Max adds a searchable design catalog. Sleek's skill connects the agent to a service that generates editable mobile app screens. Choose by the output you need.

This is a source-based comparison, checked on September 28, 2026. We did not run a shared brief through these skills or measure their output quality. We publish Sleek, which is included here alongside two skills for developers who want their coding agent to handle more of the design work.

What is a UI design skill for Claude Code?

A UI design skill is a folder containing a SKILL.md instruction file and, sometimes, scripts or supporting data. The coding agent reads those instructions for relevant tasks. A skill can guide design decisions, run a local search, or explain how to call a service. Its name alone does not tell you which.

Anthropic's skills repository describes this folder-based format and how Claude loads it. An MCP server supplies callable tools instead. Our design MCP server comparison covers connections to Figma, Mobbin, Stitch, and other design products.

What is Anthropic's frontend-design skill?

Anthropic's frontend-design skill directs the agent to choose a visual approach that fits the subject and audience before writing UI code. It asks the agent to review that plan and question generic defaults. The result remains code in your project; installing the skill does not create a separate design workspace.

The current frontend-design source covers typography, palette, layout, restrained motion, and self-critique. Its instructions favor decisions tied to the brief. A specified brand direction takes precedence over its advice to avoid familiar generated looks.

Commands checked on 2026-09-28.

Run this command inside Claude Code, then choose an installation scope as described in the plugin documentation:

/plugin install frontend-design@claude-plugins-official

Anthropic distributes this dedicated plugin through its official marketplace. The separate example-skills pack also includes frontend-design alongside other demonstration skills.

Use it when you want the agent to make more deliberate visual decisions while implementing an interface.

What is the UI UX Pro Max skill?

UI UX Pro Max adds a searchable collection of design guidance to the coding agent's workflow. It recommends a design system before implementation, including colors and typography, then provides guidance for the chosen framework. It can save those recommendations as Markdown, while the agent still writes the actual interface code.

According to the UI UX Pro Max README, its catalog includes 79 searchable styles, 192 palettes, and 74 font pairings as of September 2026. Those counts describe the dataset, not a quality score. Python 3 is required for local search.

The README documents these Claude Code commands:

/plugin marketplace add nextlevelbuilder/ui-ux-pro-max-skill
/plugin install ui-ux-pro-max@ui-ux-pro-max-skill

Its CLI supports both Claude Code and Cursor. Install the package, then run the initialization command for your editor in your project:

npm install -g ui-ux-pro-max-cli
uipro init --ai claude

For Cursor, use this initialization command instead:

uipro init --ai cursor

The npm package is ui-ux-pro-max-cli; the executable is uipro. The README warns that older uipro-cli releases are stale.

The skill's workflow tells the agent to generate design guidance first and check details such as focus states and contrast before delivery. With the Claude installation, you can inspect a recommendation yourself:

python3 .claude/skills/ui-ux-pro-max/scripts/search.py "fintech banking" --design-system -f markdown

Adding --persist -p "MyApp" saves rules in design-system/myapp/MASTER.md. That can help later sessions reuse decisions, but it does not create reusable UI components. Treat a suggested palette or layout as a starting point. Your brand, content, and accessibility review still decide whether it belongs in the app.

What does the Sleek agent skill change?

Sleek's agent skill sends the design task to Sleek's REST API and returns a mobile design project. The coding agent can show rendered screens and fetch their HTML for implementation. This fits developers who want to inspect and revise iOS or Android screen designs before adapting them into their app's codebase.

Install the official skill using the command in the Sleek agent-skills README:

npx skills add sleekdotdesign/agent-skills -s sleek-design-mobile-apps

The README documents .agents/skills/ as the installation location. If your client does not discover it, point the agent at the installed SKILL.md. The same skill can be used with Claude Code or Cursor.

The skill source instructs the agent to request browser approval through a device flow when SLEEK_API_KEY is missing. Once approved, the agent receives the key without asking you to paste it into chat. It then creates a project, sends the full brief as one message, polls the run, and renders the resulting screens. For implementation, it must retrieve the screen HTML rather than rely only on screenshots.

Sleek's current plans allow Free accounts to try the API with 60 one-time credits. Ongoing access requires Pro or Team. Pro costs $69/month or $360/year and includes 20,000 monthly credits, as of September 2026. Starter does not include API access.

Sleek's export formats include editable Figma layers and React with Tailwind CSS. A mobile screen design is not a working native app: your coding agent still needs to implement navigation, data handling, and platform behavior. React Native and SwiftUI implementations require adaptation.

Which UI design skill should you use?

Choose frontend-design when you want visual guidance while the agent builds UI in your repo. Choose UI UX Pro Max when you want searchable design recommendations and framework guidance. Choose Sleek when you want an editable mobile design project before implementation.

A useful brief says what the interface must let someone do, which screens or states matter, and what constraints already exist. For example, a banking dashboard with a fixed component library needs different instructions from a new mobile budgeting app whose visual style is undecided. State that distinction before activating a skill.

If you already have colors, typography, and spacing rules, give those to the agent alongside the skill. The DESIGN.md library provides another place to start with written design direction. A skill should help apply your decisions, not silently replace them.

For a broader product choice, compare the AI mobile app design tools. If you meant Anthropic's separate design workspace, see the Claude Design alternatives.

What can a design skill not do?

A design skill cannot show that an interface works for your users. Instructions and catalog recommendations need review in the running app. Check keyboard access, error recovery, and checkout behavior in the implementation.

Start with one skill that matches the missing step in your workflow. Combining several broad instruction sets can leave the model reconciling conflicting design advice. Add another only when you can explain the separate job it will do.

Frequently asked questions

For editable mobile screens, connect your coding agent to Sleek, describe the app, and review the generated project before implementation.