frontend-design

frontend-design is a skill for Claude Code, Codex from Day1Labs/OpenAva. It costs 26 tokens per session (1,036 once invoked), scanned A, original, MIT.

A guide for building complete web interfaces with plain HTML, CSS, and JavaScript.

In plain words
What is it for?
Making websites, landing pages, dashboards, prototypes, posters, and other interactive browser pages.
Why use it?
It gives developers a clear way to create polished pages without requiring a framework or build process.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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/day1labs/openava/frontend-design
Any agent
npx skills add Day1Labs/OpenAva --skill frontend-design
Clone the repo
git clone --depth 1 https://github.com/Day1Labs/OpenAva

Made for: Claude Code, Codex.

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-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/day1labs/openava/frontend-design.svg)](https://agentmods.dev/skills/day1labs/openava/frontend-design)
Your own site
<a href="https://agentmods.dev/skills/day1labs/openava/frontend-design"><img src="https://agentmods.dev/badge/skills/day1labs/openava/frontend-design.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,036 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 5.1 $0.00026 $0.01036
Opus 5 $0.00013 $0.00518
Sonnet 5 $0.00005 $0.00207
Haiku 4.5 $0.00003 $0.00104

Measured 5d ago against content hash 88e6546c5430, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

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 5d 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.

OpenAva/Runtime/Agent/Skills/frontend-design/SKILL.md · 148 lines

How it starts

The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Frontend Design

Use this skill when the user asks to build or beautify any web UI, such as:

  • Websites, landing pages, marketing pages
  • Dashboards and data-heavy interfaces
  • Compile-free web pages and interactive UI
  • HTML/CSS layouts, interactive prototypes, posters, microsites

This is a design-and-implementation skill. It should output real working frontend code, not only visual ideas.

Runtime Constraint (Generic)

This skill is framework-agnostic and compile-free by default. Therefore:

  • Prefer native HTML + CSS + vanilla JavaScript
  • Avoid framework/toolchain dependencies that require compiling (React/Vue/Svelte, bundlers, npm build steps) unless the user explicitly requests them
  • Deliver code that can run by opening the HTML directly
  • Prefer self-contained deliverables (single HTML file with embedded CSS/JS) unless multi-file structure is explicitly needed

Mission

Create frontend work that is:

  • Production-grade and functional
  • Visually distinctive and memorable
  • Cohesive under one clear aesthetic direction
  • Refined in typography, color, motion, spacing, and details

Avoid generic "AI template" output at all costs.

Core Workflow

1) Understand Context Before Coding

Clarify:

  • Purpose: what the UI needs to achieve
  • Audience: who will use it and in what setting
  • Constraints: small-screen-first responsiveness, performance, accessibility, and compile-free delivery limits
  • Differentiator: the one impression users should remember

2) Commit to One Bold Aesthetic Direction

Pick a strong style and execute it consistently. Examples:

  • Brutally minimal
  • Editorial / magazine
  • Retro-futuristic
  • Industrial / utilitarian
  • Playful / toy-like
  • Luxury / refined
  • Organic / natural
  • Brutalist / raw

The rule is intentionality: both maximalism and minimalism are valid when executed with precision.

3) Implement Real Code

Deliver complete, runnable code in native HTML/CSS/JS by default, optimized for direct execution without build tooling.

Read the full file on GitHub · 148 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 5d ago First seen · 148 lines · 26 tokens per session scan A 88e6546c5430

Subscribe to this mod's changes

frontend-design is a skill published in the GitHub repository Day1Labs/OpenAva (10 stars, last pushed 1mo ago), licensed MIT. It adds 26 tokens to every session and 1,036 once invoked, about $0.0001 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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