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.
npx skills add sourav15mukherjee/skillforge-free-skills --skill frontend-design-systemgit clone --depth 1 https://github.com/sourav15mukherjee/skillforge-free-skillsWrote 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.
[](https://agentmods.dev/skills/sourav15mukherjee/skillforge-free-skills/frontend-design-system)<a href="https://agentmods.dev/skills/sourav15mukherjee/skillforge-free-skills/frontend-design-system"><img src="https://agentmods.dev/badge/skills/sourav15mukherjee/skillforge-free-skills/frontend-design-system/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.
<a href="https://agentmods.dev/skills/sourav15mukherjee/skillforge-free-skills/frontend-design-system"><img src="https://agentmods.dev/badge/skills/sourav15mukherjee/skillforge-free-skills/frontend-design-system.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00056 | $0.01267 |
| Opus 5 | $0.00028 | $0.00633 |
| Sonnet 5 | $0.00011 | $0.00253 |
| Haiku 4.5 | $0.00006 | $0.00127 |
Grade A, and why
frontend-design-system 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.
How it starts
The opening of the file, as written. The whole thing — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend Design System
Generate cohesive, production-grade frontend code with matched design tokens, accessible components, and responsive layouts.
Workflow
-
Understand the request Read the user's UI description. Identify:
- Page type: landing page, dashboard, form, card grid, documentation, blog, SaaS app
- Visual mood: professional, playful, bold, calm, luxury, technical
- Framework: React (default), Vue, Svelte, or vanilla HTML/CSS
- CSS approach: Tailwind (default), CSS Modules, or plain CSS
-
Select a visual style mode Based on the mood, pick one:
Mode Character Minimalist White space, thin lines, muted palette Brutalist Raw, bold borders, monospace, high contrast Glassmorphism Blur backgrounds, transparency, gradients Neumorphic Soft shadows, light/dark depth, rounded Dark Corporate Deep navy/charcoal, accent highlights Soft Gradient Pastel gradients, rounded corners, airy Neobrutalist Thick borders, offset shadows, bright colors Clean SaaS Light bg, blue/indigo accents, tight spacing Editorial Serif headings, generous whitespace, type-driven Cyberpunk Neon accents, dark bg, glitch effects Nature/Organic Earth tones, soft edges, natural textures Playful Bright colors, bouncy shapes, fun typography -
Generate the color palette Create a semantic palette with 6-8 tokens:
:root { --color-primary: /* main brand color */; --color-primary-hover: /* darker variant */; --color-secondary: /* complementary accent */; --color-background: /* page background */; --color-surface: /* card/panel background */; --color-text: /* primary text */; --color-text-muted: /* secondary text */; --color-border: /* dividers, outlines */; --color-success: /* #22c55e or variant */; --color-warning: /* #f59e0b or variant */; --color-error: /* #ef4444 or variant */; }
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.
- 12d ago First seen · 130 lines · 56 tokens per session scan A df85b6055b0e
frontend-design-system is a skill published in the GitHub repository sourav15mukherjee/skillforge-free-skills (5 stars, last pushed 5mo ago), licensed MIT. It adds 56 tokens to every session and 1,267 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 2026-08-31.
Other skills, from other repositories
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…
visual-ralph
Visual Ralph orchestration for frontend UI from generated references, static references, or live URL targets, using $ultragoal with built-in visual verdict and pixel-diff evidence until the implementation matches and leaves a reproducible design system.
frontend-ui-dark-ts
Build dark-themed React applications using Tailwind CSS with custom theming, glassmorphism effects, and Framer Motion animations. Use when creating dashboards, admin panels, or data-rich interfaces with a refined dark aesthetic.
reveal-hover-effect
Build cursor-following spotlight reveals that expose a second aligned image through a soft radial mask. Use for hover-to-color, before-and-after, x-ray, material, texture, product-detail, and illustrated hero effects where a desaturated or embossed base image should remain visible while another treatment follows an…
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…
prototype-web
A clickable, high-fidelity web product prototype with navigation, a hero section, feature cards, steps, social proof, and optional pricing. It is designed to resemble a finished landing page while remaining a prototype.