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javis-os: Skill for Claude Code

.claude/skills/html-to-webcake/SKILL.md

HTML sang Webcake is a skill for Claude Code from blogminhquy/javis-os. It costs 41 tokens per session (3,520 once invoked), scanned A, original, MIT.

A converter that turns an HTML webpage into a .pke file for Webcake, a visual page editor. It keeps the source page’s text, colours, font sizes, images and general layout.

In plain words
What is it for?
Use it to make an HTML landing page editable in Webcake or turn a published Webcake page back into editable content where possible.
Why use it?
It removes the need to rebuild an HTML landing page manually in Webcake. Because Webcake positions elements separately for desktop and mobile, the page is reconstructed to fit that editor’s format.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is blogminhquy/javis-os's own configuration. It tells Claude Code how to work on javis-os itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything javis-os configures →

not rated 194repo +6 yesterday A scan SkillSpector: pass 41 tokens original MIT
View source ↗ blogminhquy/javis-os javisos.com
Reuse

Borrowing it

Nothing to install: this file belongs to blogminhquy/javis-os. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/blogminhquy/javis-os/main/.claude/skills/html-to-webcake/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/blogminhquy/javis-os

Made for: Claude Code.

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 HTML sang Webcake

README.md
[![agentmods](https://agentmods.dev/badge/skills/blogminhquy/javis-os/html-to-webcake/github.svg)](https://agentmods.dev/skills/blogminhquy/javis-os/html-to-webcake)
Your own site
<a href="https://agentmods.dev/skills/blogminhquy/javis-os/html-to-webcake"><img src="https://agentmods.dev/badge/skills/blogminhquy/javis-os/html-to-webcake/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 HTML sang Webcake

Your own site · 80×15
<a href="https://agentmods.dev/skills/blogminhquy/javis-os/html-to-webcake"><img src="https://agentmods.dev/badge/skills/blogminhquy/javis-os/html-to-webcake.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,520 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 $0.00041 $0.03520
Opus 5 $0.00020 $0.01760
Sonnet 5 $0.00008 $0.00704
Haiku 4.5 $0.00004 $0.00352

Measured 11d ago against content hash e6ea4dcd892a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

HTML sang Webcake 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 11d ago.

The scan reads SKILL.md. This mod also ships 6 executable files (tools/webcake-build.js, tools/webcake-from-html.js, tools/webcake-html.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.

.claude/skills/html-to-webcake/SKILL.md · 166 lines

How it starts

The opening of the file, as written. The whole thing — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.

HTML sang Webcake (.pke)

Khi nào dùng

Người dùng nói những câu như: "chuyển file html này sang webcake", "đổi html thành pke", "tạo file webcake từ html", "làm landing này thành file sửa được trên webcake", "html to webcake", "convert html sang webcake", "bài sales page vừa viết đưa lên webcake".

Hiểu đúng bản chất trước khi làm

  • File .pke = base64( MessagePack( envelope ) ), trong đó envelope.source chính là page_source của editor Webcake (settings, popup, page, options, cartConfigs).
  • Webcake là canvas định vị TUYỆT ĐỐI theo pixel, mỗi phần tử ghi top/left/width/height RIÊNG cho 2 khổ: mobile rộng 420, desktop rộng 960. Không phải HTML trôi theo dòng.
  • Vì vậy bố cục được TÁI DỰNG thành các section xếp dọc + hàng nhiều cột. Còn màu, cỡ chữ, line-height, letter-spacing, ảnh, nội dung, thứ tự thì lấy nguyên từ nguồn - bộ công cụ đọc cascade CSS thật chứ không nhìn bằng mắt. Nói rõ ranh giới này với người dùng.
  • HTML do Webcake publish (bản đã xuất) không chứa source biên tập; vẫn đọc lại nội dung được.

Công cụ (đi kèm skill, không cần cài gói)

Ở thư mục tools/ cạnh file SKILL.md này. Chạy bằng node, không phụ thuộc npm.

  • webcake-from-html.js - HTML -> spec.json. Đọc DOM + cascade CSS thật (biến var(--x), clamp(), @media, class, inline style), suy ra section/heading/text/ảnh/nút/form/bảng giá/ card/hàng nhiều cột, rồi in ra danh sách cảnh báo. node tools/webcake-from-html.js trang.html spec.json [--name "Tên trang"]
  • webcake-build.js - spec.json -> .pke. Tự chạy lint sau khi build. node tools/webcake-build.js spec.json out.pke [--check] (--check: exit 1 nếu lint có lỗi)
  • webcake-lint.js - soát layout (chồng nhau, tràn section, khoảng chết) và tương phản chữ/nền. node tools/webcake-lint.js out.pke
  • webcake-preview.js - render page_source thành HTML tĩnh mô phỏng đúng canvas để SOI TRƯỚC. node tools/webcake-preview.js out.pke previewBase [--debug]
  • webcake-pke.js - codec 2 chiều: decode file.pke file.json / encode file.json file.pke.
  • webcake-html.js - thư viện đọc HTML/CSS dùng chung (không gọi trực tiếp).

Read the full file on GitHub · 166 lines

Files

What ships with it

8 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. 11d ago First seen · 166 lines · 41 tokens per session scan A e6ea4dcd892a

Subscribe to this mod's changes

HTML sang Webcake is a skill published in the GitHub repository blogminhquy/javis-os (194 stars, last pushed yesterday), licensed MIT. It adds 41 tokens to every session and 3,520 once invoked, about $0.0002 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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