frontend-implement

frontend-implement is a skill for Claude Code, Codex from MadAppGang/magus. It costs 40 tokens per session (2,288 once invoked), scanned A, a copy of ui-implement, MIT.

A guide for turning visual design-review findings into frontend code changes, using rules about layout, texture, typography, motion, and colour.

In plain words
What is it for?
Use it to apply reviewed UI improvements to component files, styles, and other frontend code.
Why use it?
It helps replace generic-looking interfaces with deliberate visual choices based on an existing design review.

Skill for Claude CodeCodex

Part of the dev plugin — 41 skills, 13 commands, 13 agents shipped together

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/madappgang/magus/frontend-implement
Any agent
npx skills add MadAppGang/magus --skill frontend-implement
Clone the repo
git clone --depth 1 https://github.com/MadAppGang/magus

Made for: Claude Code, Codex.

Or install dev, the plugin that ships this one along with the rest of its 41 skills, 13 commands, 13 agents.

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 frontend-implement

README.md
[![agentmods](https://agentmods.dev/badge/skills/madappgang/magus/frontend-implement.svg)](https://agentmods.dev/skills/madappgang/magus/frontend-implement)
Your own site
<a href="https://agentmods.dev/skills/madappgang/magus/frontend-implement"><img src="https://agentmods.dev/badge/skills/madappgang/magus/frontend-implement.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,288 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 86% copy Near-identical to another mod 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 $0.00040 $0.02288
Opus 5 $0.00020 $0.01144
Sonnet 5 $0.00008 $0.00458
Haiku 4.5 $0.00004 $0.00229

Measured yesterday against content hash 15ebfd699736, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

frontend-implement 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.

Origin

This is a copy

86% identical to ui-implement — 41 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/dev/skills/frontend/frontend-implement/SKILL.md · 333 lines

How it starts

The opening of the file, as written. The whole thing — 333 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Frontend Implementation Skill

Overview

This skill provides patterns for implementing UI improvements based on design analysis. It transforms review findings into code changes following Anti-AI design principles.

Relationship to Other Skills

Skill Purpose Modifies Code?
designer:ui-analyse Visual analysis, issue detection (requires designer plugin) No
dev:frontend-implement Apply improvements from analysis Yes
designer:ui-style-format Style file specification (requires designer plugin) No
designer:design-references Reference image management (requires designer plugin) No

Prerequisite

This skill assumes analysis has been completed using:

  • designer:ui-analyse skill (requires designer plugin)
  • /designer:ui command output
  • External design review

Before implementing, ensure you have:

  1. A review document with identified issues
  2. Component path(s) to modify
  3. Understanding of the visual metaphor to apply

Implementation Workflow

Phase 1: Parse Review Document

Extract actionable items from the review document.

# Extract actionable items from review
parse_review() {
  local review_path="$1"

  # Extract CRITICAL and HIGH issues
  grep -A 2 "^\[CRITICAL\]" "$review_path"
  grep -A 2 "^\[HIGH\]" "$review_path"
}

What to Look For:

  • CRITICAL issues (fix immediately)
  • HIGH issues (fix before release)
  • Specific component locations
  • Recommended changes

Phase 2: Visual Context (Optional)

If Gemini available and screenshot provided, understand the current visual state.

# Understand current visual state
npx claudish --model "$GEMINI_MODEL" --image "$CURRENT_SCREENSHOT" --quiet --auto-approve <<< "
Describe the current UI implementation:
1. Layout structure
2. Color scheme
3. Typography
4. Animation presence
5. Areas needing improvement

Output as structured data for implementation."

Model Resolution:

Pick a vision-capable model from list_models (claudish MCP) and assign to GEMINI_MODEL. If the key is absent or the file does not exist, set GEMINI_MODEL="" to fall back to text-only mode.

Read the full file on GitHub · 333 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 · 333 lines · 40 tokens per session scan A 15ebfd699736

Subscribe to this mod's changes

frontend-implement is a skill published in the GitHub repository MadAppGang/magus (9 stars, last pushed yesterday), licensed MIT. It adds 40 tokens to every session and 2,288 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to ui-implement, differing in 41 lines, and is treated as a copy.

Related

Other skills, from other repositories

Shade ShadCN install

Guardrails for running pnpm dlx shadcn@latest add in Shade — never overwrite existing components, fresh branch first, swap raw colours for semantic tokens after integrating. Trigger when the user proposes a shadcn add, or when a fresh ShadCN-shaped file lands in apps/shade/src/components/ui.

TryGhost/Ghost · 72 tokens

chakra-ui-builder

Build responsive, accessible UI components and layouts using Chakra UI v3, install or configure Chakra UI in new and existing projects, and design scalable themes using tokens, semantic tokens, recipes, and slot recipes. Use this skill whenever a user asks to build, create, or generate any UI component, page, form…

chakra-ui/chakra-ui · 214 tokens

frontend-visual-qa

Audits already-rendered web, landing-page, HTML deck/slide, browser tool/game, dashboard/admin, design-system, and desktop UIs using real-browser or native-app journeys, inspected screenshots, DOM geometry, responsive or projection viewports, and a bundled Playwright sweep. Use after UI implementation to find…

daymade/claude-code-skills · 145 tokens

prototype-web

可点击的功能性 Web 原型, 含导航、英雄区、特性区、CTA.

nexu-io/html-anything · 24 tokens

waitlist-page

【模板: 等候名单页 / Waitlist】 【意图】为新产品 / 早鸟内测做一张极简等候页。 【布局】.

nexu-io/html-anything · 25 tokens

design-frontend-dev

Clean Impeccable frontend design skill. Use when the user wants to design, redesign, critique, audit, polish, harden, optimize, adapt, clarify, colorize, animate, or otherwise improve a frontend interface. Covers websites, landing pages, dashboards, product UI, app shells, components, forms, onboarding, empty states…

The-Vibe-Company/companion · 127 tokens