web-prototype

web-prototype is a skill for Claude Code, Codex from sanqiufong/slides-from-anything. It costs 59 tokens per session (1,018 once invoked), scanned A, original, Apache-2.0.

A general-purpose recipe for building a desktop web page as one self-contained HTML file, using a supplied template and reusable page layouts.

In plain words
What is it for?
It helps compose web prototypes from predefined sections, apply project design settings, and produce a single HTML artifact.
Why use it?
It provides a starting structure and review checklist for common landing, marketing, documentation, and SaaS pages when no specialized style is needed.

Skill for Claude CodeCodex

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

Good fit It helps compose web prototypes from predefined sections, apply project design settings, and produce a single HTML artifact.

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Install with agentmods
npx agentmods add skills/sanqiufong/slides-from-anything/web-prototype
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 sanqiufong/slides-from-anything --skill web-prototype
Clone the repo
git clone --depth 1 https://github.com/sanqiufong/slides-from-anything

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 web-prototype

README.md
[![agentmods](https://agentmods.dev/badge/skills/sanqiufong/slides-from-anything/web-prototype/github.svg)](https://agentmods.dev/skills/sanqiufong/slides-from-anything/web-prototype)
Your own site
<a href="https://agentmods.dev/skills/sanqiufong/slides-from-anything/web-prototype"><img src="https://agentmods.dev/badge/skills/sanqiufong/slides-from-anything/web-prototype/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 web-prototype

Your own site · 80×15
<a href="https://agentmods.dev/skills/sanqiufong/slides-from-anything/web-prototype"><img src="https://agentmods.dev/badge/skills/sanqiufong/slides-from-anything/web-prototype.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,018 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00059 $0.01018
Opus 5 $0.00030 $0.00509
Sonnet 5 $0.00012 $0.00204
Haiku 4.5 $0.00006 $0.00102

Measured 5d ago against content hash b8fdd56defdf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

web-prototype 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.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

skills/web-prototype/SKILL.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Web Prototype Skill

Produce a single, self-contained HTML prototype using the bundled seed and layout library — not by writing CSS from scratch. The seed already encodes good defaults (typography, spacing, accent budget). Your job is to compose it.

Resource map

web-prototype/
├── SKILL.md                ← you're reading this
├── assets/
│   └── template.html       ← seed: tokens + class system + chrome (READ FIRST)
└── references/
    ├── layouts.md          ← 8 paste-ready section skeletons
    └── checklist.md        ← P0/P1/P2 self-review

Workflow

Step 0 — Pre-flight (do this once before writing anything)

  1. Read assets/template.html end-to-end — at minimum through the <style> block. The class inventory at the top of references/layouts.md lists every class that must be defined there; if one is missing, add it to <style> rather than re-defining it inline on every section.
  2. Read references/layouts.md so you know which section skeletons exist. Don't write a section type that isn't covered — pick the closest layout and adapt.
  3. Read the active DESIGN.md (already injected into your system prompt). Map its colors to the six :root variables in the seed; don't introduce new tokens.

Step 1 — Copy the seed

Copy assets/template.html to the project root as index.html. Replace the six :root variables with the active design system's tokens. Replace the page <title> and the topnav brand.

Step 2 — Plan the section list

Pick layouts before writing copy. Default rhythms (from layouts.md):

Page kind Default rhythm
Landing 1 hero → 3 features → 4 stats or 5 quote → custom split → 6 cta
Marketing / editorial 1 hero-center → 7 log list → 6 cta
Pricing 1 hero-center → 8 comparison table → 6 cta
Docs index 1 hero-center → 7 log list (sections of docs) → 6 cta

State the chosen list in one sentence to the user before writing — they can redirect cheaply now and not after 200 lines of HTML.

Read the full file on GitHub · 98 lines

Files

What ships with it

4 files 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 · 98 lines · 59 tokens per session scan A b8fdd56defdf

Subscribe to this mod's changes

web-prototype is a skill published in the GitHub repository sanqiufong/slides-from-anything (130 stars, last pushed today), licensed Apache-2.0. It adds 59 tokens to every session and 1,018 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 2026-09-03.

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