Preface

Building frontend pages with AI coding tools like Cursor and Claude Code is indeed efficient: describe your requirements, and you can get a complete HTML/CSS page in minutes. But after using them a few times, many people share the same feeling—warm beige backgrounds with serif headlines, dark backgrounds accented with fluorescent green, newspaper-style thin column divisions… Switching projects doesn’t change the template, the interface works, but it looks like it’s wrapped in the same design template.

Anthropic provides a UI-design-focused Skill in its official Skills repository: frontend-design. It doesn’t teach you how to write React components, but instead teaches Agents to make aesthetic decisions, layout planning, and self-review like a design lead before writing code, to avoid the “default aesthetic” common in AI-generated interfaces as much as possible.

What is this

frontend-design is an Agent Skill maintained by Anthropic, with the repository address at anthropics/skills/skills/frontend-design.

The Skill itself is a SKILL.md file that follows the Agent Skills Open Standard, and can be used in AI coding tools that support this standard, such as Cursor, Claude Code, and Claude.ai. The official description is: Provide distinctive, intentional visual design guidance when building new UIs or revamping existing interfaces, covering aesthetic direction, typography, etc., to help produce designs that don’t look like default template solutions.

Unlike Skills that directly write code, frontend-design is almost entirely composed of design methodologies and process constraints, with no executable scripts. Its core role is to change the Agent’s thinking path when doing UI work.

Core Features and Highlights

1. Start from the “Design Lead” perspective

The Skill requires the Agent to act as the lead of a small design studio: the client has rejected template-like solutions, and is paying for a distinctive visual identity. Therefore, deliberate and opinionated choices need to be made on color matching, typography, and layout, and at least one defensible aesthetic risk must be taken.

2. Anchor the theme first, then talk about visuals

If the requirement does not specify a clear product or theme, the Agent must first determine: what is the specific theme, who is the audience, and what is the sole task of the page. Design inspiration should come from the world of the theme itself—materials, tools, objects, industry context—rather than applying generic UI clichés.

3. Five Design Principles

The Skill provides actionable constraints for web design:
- Hero is the argument: The first screen should present the most characteristic elements of the theme world, rather than the default “big numbers + small labels + gradient accents”.
- Typography carries personality: Display fonts and body fonts need to be deliberately paired, establishing clear font hierarchy, font weights, and spacing, so that typography itself becomes a memorable point.
- Structure is information: Structural elements such as numbers, dividers, and labels should encode content meaning, rather than being purely decorative; for example, 01/02/03 numbering only applies to real ordered processes.
- Animation has purpose: Page loading, scroll reveals, hover micro-interactions, etc., should serve the theme; excessive animation反而强化 “AI generated feeling”.
- Complexity matches vision: Extremely complex designs require meticulous execution, while minimalist designs require precise spacing and details.

4. Calling out three “default aesthetics” of AI interfaces

The Skill clearly lists three appearances that current AI-generated designs easily converge to, and reminds: they may be reasonable for a specific brief, but should be guarded against as “default choices made without careful thought”:
1. Warm cream background (approximately #F4F1EA) + high-contrast serif display fonts + terracotta accents;
2. Near-black background + single bright acid green or vermilion accent color;
3. Wide newspaper-style layout: extremely thin dividers, zero rounded corners, dense columns.

If the brief does not specify a direction, the Skill requires the Agent not to waste “freedom” on these default solutions.

5. Two-stage workflow: Plan first, then code

Before formal coding, the Agent needs to complete two rounds of work:

First round——Design Plan, output a compact design token system:
- Color: 4–6 named hex color values;
- Type: At least two role-based fonts (distinctive display fonts, complementary body fonts, add auxiliary fonts if necessary);
- Layout: Describe the layout concept in one sentence + ASCII wireframe;
- Signature: The only memorable element of the page, which needs to echo the brief.

Second round——Review against the brief: If any part of the plan would yield similar results for another project, it must be revised and the reason for the change explained. Only after confirming “relatively unique” should you write code according to the revised plan, and all color and font decisions should be derived from the plan.

When writing CSS, the Skill also reminds to pay attention to selector priority conflicts (such as .section and .cta stacking causing padding/margin to cancel each other out), a common pitfall in AI-generated batch styles.

6. Restraint, self-check, and accessibility baseline

The Skill requires concentrating “boldness” in one place——the Signature element should be prominent enough, and the rest should be restrained; and builds in quality baselines: mobile responsiveness, visible keyboard focus, and prefers-reduced-motion must be respected. Encourages self-criticism during the build process, and you can take screenshots for review when the environment supports it.

7. Interface copy is also part of design

The Skill has a dedicated “writing in design” section: copy is design material, not decoration. It requires naming controls from the user’s perspective, using active voice, providing actionable guidance for errors and empty states, and maintaining consistent vocabulary throughout the process——these rules are equally important as visual specifications.

Installation and Activation

The frontend-design directory structure is simple, only containing SKILL.md and LICENSE.txt, with no additional scripts. The installation methods for each tool are as follows.

Claude Code

Anthropic officially packages this Skill in the example-skills plugin. First register the marketplace, then install the plugin:

/plugin marketplace add anthropics/skills
/plugin install example-skills@anthropic-agent-skills

After installation, mention your UI design needs in the conversation, or directly specify “use the frontend-design skill” to trigger it.

Claude.ai

The Anthropic repository README states that some example Skills are now available to paid plan users. You can also upload custom Skills according to Using skills in Claude.

Cursor

Cursor automatically scans the Skill directory on startup. You can place the Skill in a project or user-level directory:
| Path | Scope |
|------|--------|
| .cursor/skills/ | Project-level |
| ~/.cursor/skills/ | User-level (global) |

Manual installation steps:

mkdir -p .cursor/skills/frontend-design
curl -o .cursor/skills/frontend-design/SKILL.md \
  https://raw.githubusercontent.com/anthropics/skills/main/skills/frontend-design/SKILL.md

You can also fill in the repository address https://github.com/anthropics/skills in the Cursor sidebar Customize → Rules → Add Rule → Remote Rule (Github) to import.

After installation, you can check if it has been detected in Customize → Skills. The Agent will automatically judge whether to enable it based on the description; you can also manually call it by entering /frontend-design in the Agent conversation.

Other tools compatible with the Agent Skills standard

Tools such as Codex CLI and Claude Code also support placing the Skill directory in paths like .agents/skills/ and .codex/skills/, please refer to the respective tool documentation for specifics. The frontmatter of the Skill only requires two required fields: name and description:

---
name: frontend-design
description: Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one.
---

Typical Usage Examples

After enabling the Skill, you can describe your UI task to the Agent. The Skill will guide the Agent to output the design plan before writing code. The following is a prompt example close to the official workflow.

Create a landing page:

Please use the frontend-design skill to design a landing page for an indie music podcast App.
The target users are 25–35 year-old independent music lovers, and the sole task of the page is to guide downloads.
First provide the design plan for Color / Type / Layout / Signature, check against the brief to confirm whether it falls into the AI default aesthetic, and then write HTML/CSS after confirmation.

Revamp an existing page:

The existing homepage is too much like a generic SaaS template, please redo the visual direction according to the frontend-design method:
1. Clarify the page theme, audience, and core task;
2. List which of the "three default aesthetics" the current design falls into;
3. Output the revised token system and Signature elements;
4. Then modify the code, paying attention to CSS selector priority conflicts.

Only need design planning, do not write code for now:

Use the frontend-design process to create a design plan for the homepage of a "local coffee roasting workshop" official website,
including 4–6 named color values, font pairing, ASCII wireframe and Signature element description, do not write code first.

The Skill itself does not contain fixed CLI commands; its value lies in the Agent reading SKILL.md and executing the process——brainstorm → plan → critique → build → critique again.

Applicable Scenarios and Notes

Who and what scenarios it suits:
- Frontend/full-stack developers who want AI-assisted coding while retaining visual distinctiveness;
- Independent developers and small teams without full-time designers but needing launch-ready marketing pages and product pages;
- Creators who are tired of the “cookie-cutter” feel of AI-generated UIs and want to constrain Agents at the process level.

Notes:
1. This is design guidance, not a component library. The Skill does not provide ready-made UI frameworks or icon packs, and the output quality still depends on the Agent model capabilities and the quality of your brief.
2. The more specific the brief, the better the effect. The Skill emphasizes “brief text first”——if you have specified a visual direction, the Agent should strictly follow it, rather than forcing “innovation”.
3. Demonstration nature. The Anthropic repository README notes that these Skills are for demonstration and educational purposes only, and Claude’s actual behavior may differ from the Skill file description. You need to fully test it yourself for key projects.
4. Only Markdown, no automated testing. Unlike Skills with eval processes such as skill-creator, frontend-design has no built-in evaluation scripts. Whether it is triggered correctly needs to be observed in real tasks by checking whether the Agent outputs a design plan before writing code.

Summary

AI writes frontend code quickly, but speed does not equal brand identity. The value of frontend-design lies in elevating the “template-like” problem from the prompt level to the Skill process level: first anchor the theme, establish a token system, identify and avoid three common default aesthetics, concentrate on one Signature element, and perform self-check before writing code.

If you are already using the Agent Skills ecosystem, this Skill is worth adding to .cursor/skills/ or Claude Code’s example-skills plugin. Try it next time you make a landing page or revamp a homepage——always review the design plan before approving code writing.

Official repository: https://github.com/anthropics/skills/tree/main/skills/frontend-design