design

A guide for designing frontend pages, including layout patterns, visual rules, reusable interface components, and project-specific style settings. It is intended for the C4A project.

In plain words
What is it for?
Use it when creating or modifying frontend pages, views, components, themes, responsive layouts, or page styling in C4A.
Why use it?
It gives developers the project’s design rules before they create or change a page, helping keep layouts and styling consistent.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/context4ai/workflow/design
Any agent
npx skills add context4ai/workflow --skill design
Clone the repo
git clone --depth 1 https://github.com/context4ai/workflow

Made for: Claude Code, Codex.

Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,826 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00042 $0.02826
Opus 5 $0.00021 $0.01413
Sonnet 5 $0.00008 $0.00565
Haiku 4.5 $0.00004 $0.00283

Measured yesterday against content hash 4716ae0addeb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

design 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 yesterday.

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/design/SKILL.md · 245 lines

How it starts

The opening of the file, as written. The whole thing — 245 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Design

A frontend page design system guide for the C4A project. This skill auto-loads when creating or modifying frontend pages, providing design tokens, component specs, page templates, layout references, and key design rules.


When This Skill Triggers

This skill should be loaded whenever the agent is:

  • Creating a new frontend page or view
  • Modifying the layout or visual structure of an existing page
  • Adding or changing UI components on a page
  • Working on styling, theming, or responsive behavior
  • Reviewing frontend code for design system compliance

Design System File Hierarchy

Required Reads (Always Load)

These files MUST be read before any frontend page work:

File Path Contents
DESIGN.md ${CLAUDE_PLUGIN_ROOT}/design/ui/reference/DESIGN.md Full design system specification — colors, typography, elevation, layout, components, interaction rules, do's and don'ts
_tokens.css ${CLAUDE_PLUGIN_ROOT}/design/ui/templates/_tokens.css CSS custom properties (all --c4a-* tokens) for dark and light themes

On-Demand Reads (Load When Relevant)

File Path When to Load
design-guide.md ${CLAUDE_PLUGIN_ROOT}/design/ui/reference/design-guide.md When making template selection decisions or implementing detailed card/spacing/typography patterns
Component specs ${CLAUDE_PLUGIN_ROOT}/design/ui/components/<name>.md When using a specific component type (see component list below)
Page templates ${CLAUDE_PLUGIN_ROOT}/design/ui/templates/<template>.html When creating a page that matches a template pattern
_base.css ${CLAUDE_PLUGIN_ROOT}/design/ui/templates/_base.css When implementing structural CSS classes

Component Spec Files

File Components Covered
buttons.md Primary, Secondary, Ghost buttons
badges-status.md Badges, tags, status indicators
cards.md Card structures, padding, spacing
dialogs.md Modals, error dialogs, dialog shell
dropdowns-menus.md Dropdown menus, select triggers
empty-states.md Standard empty state, dashed placeholder
forms.md Input, select, toggle, selection cards, labels
navigation.md Sidebar, breadcrumbs, tabs
tables.md Data tables, table containers

Read the full file on GitHub · 245 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. yesterday First seen · 245 lines · 42 tokens per session scan A 4716ae0addeb

Subscribe to this mod's changes

design is a skill published in the GitHub repository context4ai/workflow (4 stars, last pushed 4mo ago), licensed MIT. It adds 42 tokens to every session and 2,826 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 2026-08-31.

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