Editorial source guideQuality 62/100

anthropics/skills/skills/frontend-design/SKILL.md

frontend-design

Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one. Helps with aesthetic direction, typography, and making choices that don't read as templated defaults.

Source repository stars
164,673
Declared platforms
0
Static risk flags
0
Last source update
2026-07-24
Source checked
2026-07-28

Decision brief

What it does—and where it fits

frontend-design is a workflow for new interfaces and substantial visual redesigns. Instead of supplying a fixed template, it asks the Agent to ground the work in a product, audience, and page goal; define color, type, layout, and a signature element; and challenge generic choices before implementation.

Best for

  • Creating landing pages, product surfaces, dashboards, or other web UI that needs a clear visual direction.
  • Reshaping an existing interface that feels generic or lacks a product-specific identity.
  • Teams that want the Agent to plan before coding, critique its first direction, and explain what it revised.

Not for

  • The upstream guide warns that common palettes, type pairings, and layouts can be valid yet still be subject-agnostic defaults. Spend creative freedom on choices derived from this product.
  • Keep one signature element that represents the subject and let the surrounding structure stay disciplined. Stacking gradients, motion, texture, and novelty type dilutes the focus.
  • The upstream source calls for responsiveness, keyboard focus, and reduced motion, but it does not provide a complete WCAG audit workflow. Compliance goals still need automated and human review.

Compatibility matrix

Platform support, with evidence labels

PlatformStatusEvidenceWhat to check
CodexNot declaredNo explicit evidencePortability before use
Claude CodeNot declaredNo explicit evidencePortability before use
CursorNot declaredNo explicit evidencePortability before use
Gemini CLINot declaredNo explicit evidencePortability before use
Open the compatibility checker

Installation

Inspect first. Install second.

The source command is displayed only when detected. A safe inspection prompt is always available so your agent can explain every action before execution.

Source-detected install commandSource
npx skills add https://github.com/anthropics/skills --skill "skills/frontend-design"
Safe inspection promptEditorial

Inspect the Agent Skill "frontend-design" from https://github.com/anthropics/skills/blob/b29e7cf65e5cb78a5ac33d582270551bc74a14eb/skills/frontend-design/SKILL.md at commit b29e7cf65e5cb78a5ac33d582270551bc74a14eb. List every install step, command, network request, credential, file read/write, external action, and rollback step. Explain whether it fits my task. Do not install or execute anything until I approve.

Workflow

What the source asks the agent to do

  1. 01

    Ground the task in a real subject

    Name the product, audience, and the page's single job. Derive visual material, language, and structure from the subject instead of a generic template.

    A one-sentence product or subject definitionThe audience and primary jobReal content and constraints that must be used
  2. 02

    Choose a justified visual direction

    Treat the hero, typography, structure, and motion as information design. Every decorative choice should connect to the subject or user task.

    The hero's central thesis or interactionType roles and a clear scaleOne focused motion strategy instead of scattered effects
  3. 03

    Plan a compact design system first

    Before coding, plan color, type, layout, and a signature element; compare layout directions with short descriptions or ASCII wireframes.

    4–6 named hexadecimal colorsAt least two type rolesA layout concept and one signature element
  4. 04

    Critique the first direction before building

    Check whether the design plan could be reused unchanged for another product. Revise choices that come from habit rather than the current subject, and explain why.

    Generic choices that were identifiedThe revised direction and its rationaleThe confirmed design plan
  5. 05

    Build, capture, and self-review

    Implement from the design plan, concentrate boldness in one place, and check responsive behavior, keyboard focus, reduced motion, and CSS rule conflicts.

    A working responsive interfaceDesktop and mobile screenshotsA final pass with unnecessary decoration removed

Permission review

Static risk signals and limitations

No configured static risk pattern was detected

This is not proof of safety. Runtime behavior, indirect dependencies, and hidden external systems are outside the static scan.

Evidence record

Why each signal appears

EvidenceSourceComputedTestedEditorial
SignalValueEvidence typeMeaning
Quality score62/100ComputedDocumentation, specificity, maintenance, and trust rules
Repository stars164,673SourceRepository attention, not individual Skill quality
Compatibility0 platformsSourceDeclared in the catalog source record
Usage guidesource guideEditorialGenerated or reviewed according to the visible evidence level

Pinned source

Provenance and original SKILL.md

Repository
anthropics/skills
Skill path
skills/frontend-design/SKILL.md
Commit
b29e7cf65e5cb78a5ac33d582270551bc74a14eb
License
Not declared
Collected
2026-07-28
Default branch
main
View the original SKILL.md

Frontend Design

Approach this as the design lead at a small studio known for giving every client a visual identity that could not be mistaken for anyone else's. This client has already rejected proposals that felt templated, and is paying for a distinctive point of view: make deliberate, opinionated choices about palette, typography, and layout that are specific to this brief, and take one real aesthetic risk you can justify.

Ground it in the subject

If the brief does not pin down what the product or subject is, pin it yourself before designing: name one concrete subject, its audience, and the page's single job, and state your choice. If there's any information in your memory about the human's preferences, context about what they're building, or designs you've made before – use that as a hint. The subject's own world, its materials, instruments, artifacts, and vernacular, is where distinctive choices come from. Build with the brief's real content and subject matter throughout.

Design principles

For web designs, the hero is a thesis. Open with the most characteristic thing in the subject's world, in whatever form makes sense for it: a headline, an image, an animation, a live demo, an interactive moment. Be deliberate with your choice: a big number with a small label, supporting stats, and a gradient accent is the template answer, only use if that's truly the best option.

Typography carries the personality of the page. Pair the display and body faces deliberately, not the same families you would reach for on any other project, and set a clear type scale with intentional weights, widths, and spacing. Make the type treatment itself a memorable part of the design, not a neutral delivery vehicle for the content.

Structure is information. Structural devices, numbering, eyebrows, dividers, labels, should encode something true about the content, not decorate it. Many generic designs use numbered markers (01 / 02 / 03), but that's only appropriate if the content actually is a sequence - like a real process or a typed timeline where order carries information the reader needs. Question if choices like numbered markers actually make sense before incorporating them.

Leverage motion deliberately. Think about where and if animation can serve the subject: a page-load sequence, a scroll-triggered reveal, hover micro-interactions, ambient atmosphere. An orchestrated moment usually lands harder than scattered effects; choose what the direction calls for. However, sometimes less is more, and extra animation contributes to the feeling that the design is AI-generated.

Match complexity to the vision. Maximalist directions need elaborate execution; minimal directions need precision in spacing, type, and detail. Elegance is executing the chosen vision well.

Consider written content carefully. Often a design brief may not contain real content, and it's up to you to come up with copy. Copy can make a design feel as templated as the design itself. See the below section on writing for more guidance.

Process: brainstorm, explore, plan, critique, build, critique again

For calibration: AI-generated design right now clusters around three looks: (1) a warm cream background (near #F4F1EA) with a high-contrast serif display and a terracotta accent; (2) a near-black background with a single bright acid-green or vermilion accent; (3) a broadsheet-style layout with hairline rules, zero border-radius, and dense newspaper-like columns. All three are legitimate for some briefs, but they are defaults rather than choices, and they appear regardless of subject. Where the brief pins down a visual direction, follow it exactly — the brief's own words always win, including when it asks for one of these looks. Where it leaves an axis free, don't spend that freedom on one of these defaults. Just like a human designer who's hired, there's often a careful balance between doing what you're good at and taking each project as a chance to experiment and learn.

Work in two passes. First, brainstorm a short design plan based on the human's design brief: create a compact token system with color, type, layout, and signature. Color: describe the palette as 4–6 named hex values. Type: the typefaces for 2+ roles (a characterful display face that's used with restraint, a complementary body face, and a utility face for captions or data if needed). Layout: a layout concept, using one-sentence prose descriptions and ASCII wireframes to ideate and compare. Signature: the single unique element this page will be remembered by that embodies the brief in an appropriate way.

Then review that plan against the brief before building: if any part of it reads like the generic default you would produce for any similar page (work through a similar prompt to see if you arrive somewhere similar) rather than a choice made for this specific brief — revise that part, say what you changed and why. Only after you've confirmed the relative uniqueness of your design plan should you start to write the code, following the revised plan exactly and deriving every color and type decision from it.

When writing the code, be careful of structuring your CSS selector specificities. It's easy to generate CSS classes that cancel each other out (especially with a type-based selector like .section and a element-based selector like .cta). This can happen often with paddings/margins between sections.

Try to do a lot of this planning and iteration in your thinking, and only show ideas to the user when you have higher confidence it'll delight them.

Restraint and self-critique

Spend your boldness in one place. Let the signature element be the one memorable thing, keep everything around it quiet and disciplined, and cut any decoration that does not serve the brief. Not taking a risk can be a risk itself! Build to a quality floor without announcing it: responsive down to mobile, visible keyboard focus, reduced motion respected. Critique your own work as you build, taking screenshots if your environment supports it – a picture is worth 1000 tokens. Consider Chanel's advice: before leaving the house, take a look in the mirror and remove one accessory. Human creators have memory and always try to do something new, so if you have a space to quickly jot down notes about what you've tried, it can help you in future passes.

More on writing in design

Words appear in a design for one reason: to make it easier to understand, and therefore easier to use. They are design material, not decoration. Bring the same intentionality to copy that you would bring to spacing and color. Before writing anything, ask what the design needs to say, and how it can best be said to help the person navigate the experience.

Write from the end user's side of the screen. Name things by what people control and recognize, never by how the system is built. A person manages notifications, not webhook config. Describe what something does in plain terms rather than selling it. Being specific is always better than being clever.

Use active voice as default. A control should say exactly what happens when it's used: "Save changes," not "Submit." An action keeps the same name through the whole flow, so the button that says "Publish" produces a toast that says "Published." The vocabulary of an interface is the signposting for someone navigating the product. Cohesion and consistency are how people learn their way around.

Treat failure and emptiness as moments for direction, not mood. Explain what went wrong and how to fix it, in the interface's voice rather than a person's. Errors don't apologize, and they are never vague about what happened. An empty screen is an invitation to act.

Keep the register conversational and tuned: plain verbs, sentence case, no filler, with tone matched to the brand and the audience. Let each element do exactly one job. A label labels, an example demonstrates, and nothing quietly does double duty.

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