layout-primitives

layout-primitives is a skill for Claude Code from dylantarre/design-system-skills. It costs 45 tokens per session (4,300 once invoked), scanned A, original, MIT.

A collection of reusable layout building blocks for web interfaces, including vertical stacks, wrapping groups, sidebars, grids, centered containers, and full-height sections. These components adapt to available space without relying on fixed screen-size breakpoints.

In plain words
What is it for?
Use it to create design-system layout components, compose page structures, replace repeated CSS patterns, and build layouts that adapt to their container.
Why use it?
It reduces repeated flexbox and grid code and helps keep spacing and responsive behavior consistent across an interface.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the design-system-skills plugin — 29 skills shipped together

Good fit Use it to create design-system layout components, compose page structures, replace repeated CSS patterns, and build layouts that adapt to their container.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dylantarre/design-system-skills/layout-primitives
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add dylantarre/design-system-skills --skill layout-primitives
Clone the repo
git clone --depth 1 https://github.com/dylantarre/design-system-skills

Made for: Claude Code.

Or install design-system-skills, the plugin that ships this one along with the rest of its 29 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for layout-primitives

README.md
[![agentmods](https://agentmods.dev/badge/skills/dylantarre/design-system-skills/layout-primitives/github.svg)](https://agentmods.dev/skills/dylantarre/design-system-skills/layout-primitives)
Your own site
<a href="https://agentmods.dev/skills/dylantarre/design-system-skills/layout-primitives"><img src="https://agentmods.dev/badge/skills/dylantarre/design-system-skills/layout-primitives/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for layout-primitives

Your own site · 80×15
<a href="https://agentmods.dev/skills/dylantarre/design-system-skills/layout-primitives"><img src="https://agentmods.dev/badge/skills/dylantarre/design-system-skills/layout-primitives.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,300 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00045 $0.04300
Opus 5 $0.00023 $0.02150
Sonnet 5 $0.00009 $0.00860
Haiku 4.5 $0.00005 $0.00430

Measured 12d ago against content hash 153f4ab6ff4e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

layout-primitives scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/patterns/layout-primitives/SKILL.md · 851 lines

How it starts

The opening of the file, as written. The whole thing — 851 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Layout Primitives

Overview

Build reusable layout primitives (Stack, Cluster, Sidebar, Grid) that compose to create any layout. Based on Every Layout patterns - intrinsic design that adapts without breakpoints.

When to Use

  • Setting up layout components for a design system
  • Creating composable layout building blocks
  • Replacing repetitive flexbox/grid patterns
  • Building layouts that adapt without media queries
  • Implementing consistent spacing throughout an app

Quick Reference: Core Primitives

Primitive Purpose Primary CSS
Stack Vertical spacing flex-direction: column + gap
Cluster Horizontal wrapping groups flex-wrap: wrap + gap
Sidebar Two-column with minmax flex-wrap: wrap + basis
Switcher Stack/row based on width flex-wrap + container query
Center Centered max-width max-width + margin-inline: auto
Cover Vertically centered hero min-height + flex
Grid Auto-fill responsive grid grid-template-columns: repeat(auto-fill)
Frame Aspect ratio container aspect-ratio
Reel Horizontal scroll overflow-x: auto + flex-wrap: nowrap
Box Spacing/padding container padding

Stack

Vertical rhythm with consistent spacing.

CSS

.stack {
  display: flex;
  flex-direction: column;
}

.stack > * + * {
  margin-block-start: var(--stack-space, 1.5rem);
}

/* Or with gap (modern, simpler) */
.stack {
  display: flex;
  flex-direction: column;
  gap: var(--stack-space, 1.5rem);
}

/* Variants */
.stack[data-space="sm"] { --stack-space: 0.5rem; }
.stack[data-space="md"] { --stack-space: 1rem; }
.stack[data-space="lg"] { --stack-space: 2rem; }
.stack[data-space="xl"] { --stack-space: 4rem; }

React Component

interface StackProps {
  space?: 'sm' | 'md' | 'lg' | 'xl';
  as?: React.ElementType;
  children: React.ReactNode;
  className?: string;
}

export function Stack({
  space = 'md',
  as: Component = 'div',
  children,
  className,
}: StackProps) {
  return (
    <Component
      className={clsx('stack', className)}
      data-space={space}
    >
      {children}
    </Component>
  );
}

// Usage
<Stack space="lg">
  <h1>Title</h1>
  <p>Paragraph</p>
  <p>Another paragraph</p>
</Stack>

Read the full file on GitHub · 851 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 851 lines · 45 tokens per session scan A 153f4ab6ff4e

Subscribe to this mod's changes

layout-primitives is a skill published in the GitHub repository dylantarre/design-system-skills (43 stars, last pushed 8mo ago), licensed MIT. It adds 45 tokens to every session and 4,300 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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