ferrox-frontend-design

ferrox-frontend-design is a skill for Claude Code from FerroxLabs/ferrox-factory. It costs 64 tokens per session (1,875 once invoked), scanned A, original, MIT.

A frontend design guide sets project-specific rules for visual choices such as colours, fonts, spacing, components, and writing style.

In plain words
What is it for?
It helps create or restyle web pages, components, dashboards, landing pages, HTML mockups, and other interface screens.
Why use it?
It prevents a user interface from looking like a generic template and keeps later design decisions consistent with an agreed direction.

Skill for Claude Code

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

Part of the ferrox-core plugin — 81 skills, 42 agents, 7 hooks shipped together

Good fit It helps create or restyle web pages, components, dashboards, landing pages, HTML mockups, and other interface screens.

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Install with agentmods
npx agentmods add skills/ferroxlabs/ferrox-factory/ferrox-frontend-design
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 FerroxLabs/ferrox-factory --skill ferrox-frontend-design
Clone the repo
git clone --depth 1 https://github.com/FerroxLabs/ferrox-factory

Made for: Claude Code.

Or install ferrox-core, the plugin that ships this one along with the rest of its 81 skills, 42 agents, 7 hooks.

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 ferrox-frontend-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/ferroxlabs/ferrox-factory/ferrox-frontend-design/github.svg)](https://agentmods.dev/skills/ferroxlabs/ferrox-factory/ferrox-frontend-design)
Your own site
<a href="https://agentmods.dev/skills/ferroxlabs/ferrox-factory/ferrox-frontend-design"><img src="https://agentmods.dev/badge/skills/ferroxlabs/ferrox-factory/ferrox-frontend-design/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 ferrox-frontend-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/ferroxlabs/ferrox-factory/ferrox-frontend-design"><img src="https://agentmods.dev/badge/skills/ferroxlabs/ferrox-factory/ferrox-frontend-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,875 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 $0.00064 $0.01875
Opus 5 $0.00032 $0.00937
Sonnet 5 $0.00013 $0.00375
Haiku 4.5 $0.00006 $0.00187

Measured 10d ago against content hash 5c5c637152bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

ferrox-frontend-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 10d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/search.js), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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-vendored/ferrox-frontend-design/SKILL.md · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Doctrine is original Ferrox Factory writing (MIT). The knowledge base (data/, templates/design/, scripts/search.js) is ported from ijfw-design: Sean Donahoe's own IP, internal port, ijfw repo untouched.

Frontend Design

Overview

Act like a studio that was hired specifically because the client fired someone for shipping a template. Every visual decision (palette, faces, layout, copy) must be an argument for this product, defensible in a sentence that names the subject. If a choice would survive being pasted into an unrelated project, it is not a choice yet.

Core principle: distinctiveness comes from the subject, not from decorating harder.

Architecture: contract vs knowledge

  • DESIGN.md is the per-project CONTRACT (state). It lives at the project root and records what THIS project locked: palette, type scale, spacing, components, voice, never-do list.
  • This skill plus its data is the KNOWLEDGE (global). Palettes, patterns, typography pairings, UX rules, direction templates, and a brand atlas that apply to any project.
  • The flow: /ferrox-design-init consults the knowledge, crystallizes decisions into DESIGN.md, and DESIGN.md then binds all subsequent UI work. Knowledge advises; the contract rules.

The contract comes first

if [ -f DESIGN.md ]; then
  echo "DESIGN.md found: binding for this session"
else
  echo "no DESIGN.md: offer /ferrox:design-init before substantial UI work"
fi
  • DESIGN.md exists: it is binding. Read it before writing any interface code. Its tokens and never-do list override your instincts, this skill's defaults, and every knowledge-base suggestion. If the contract blocks something you believe is right, propose an edit to the contract; do not quietly ship around it.
  • No DESIGN.md: propose creating one with /ferrox-design-init (interview mode for greenfield, --from-existing when UI code already votes). For a quick throwaway mockup you may proceed, but say so and treat its decisions as candidates for the future contract, not precedent.

Read the full file on GitHub · 103 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. 10d ago First seen · 103 lines · 64 tokens per session scan A 5c5c637152bb

Subscribe to this mod's changes

ferrox-frontend-design is a skill published in the GitHub repository FerroxLabs/ferrox-factory (22 stars, last pushed 1mo ago), licensed MIT. It adds 64 tokens to every session and 1,875 once invoked, about $0.0003 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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