julilaoshi-design

julilaoshi-design is a skill for Claude Code, Codex from julilaoshi/julilaoshi-design. It costs 68 tokens per session (3,067 once invoked), scanned A, original, MIT.

A workflow for editing Pencil designs and making small browser-based changes to HTML pages. Pencil is a visual design tool, and HTML is the code used to structure web pages.

In plain words
What is it for?
Use it for .pen files, Pencil MCP tasks, screenshot review, drag-and-resize HTML editing, and exporting a lightweight web page.
Why use it?
It provides a defined process for canvas edits, screenshot checks, and safe changes when working with Pencil files or the included web editor.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Codex.

Good fit Use it for .pen files, Pencil MCP tasks, screenshot review, drag-and-resize HTML editing, and exporting a lightweight web page.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/julilaoshi/julilaoshi-design/skill
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 julilaoshi/julilaoshi-design --skill skill
Clone the repo
git clone --depth 1 https://github.com/julilaoshi/julilaoshi-design

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 julilaoshi-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/julilaoshi/julilaoshi-design/skill/github.svg)](https://agentmods.dev/skills/julilaoshi/julilaoshi-design/skill)
Your own site
<a href="https://agentmods.dev/skills/julilaoshi/julilaoshi-design/skill"><img src="https://agentmods.dev/badge/skills/julilaoshi/julilaoshi-design/skill/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 julilaoshi-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/julilaoshi/julilaoshi-design/skill"><img src="https://agentmods.dev/badge/skills/julilaoshi/julilaoshi-design/skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,067 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 $0.00068 $0.03067
Opus 5 $0.00034 $0.01533
Sonnet 5 $0.00014 $0.00613
Haiku 4.5 $0.00007 $0.00307

Measured 10d ago against content hash 674bfc90a54d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

julilaoshi-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 10d 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.

skill/SKILL.md · 344 lines

How it starts

The opening of the file, as written. The whole thing — 344 lines — stays where its author put it; the contents beside it link to each section on GitHub.

julilaoshi-design

Overview

  • This is a public-safe execution skill for official Pencil users.
  • It also includes julilaoshi-design Web 2.0, a small free static HTML editor for browser-first visual tweaking.
  • It is unofficial and does not grant redistribution rights for Pencil.
  • Pencil MCP mode assumes every user installs Pencil from the official source on their own machine.
  • Web 2.0 mode does not require official Pencil, npm installs, or a build step.
  • It handles execution discipline, not whole-page design strategy.
  • It becomes much stronger when paired with takeaway-skill and enough reference data.

Use This Skill When

  • the user says Pencil, .pen, Pencil MCP, screenshot review, or continue in Pencil
  • the user says julilaoshi-design Web, Web 2.0, HTML editor, design-to-HTML, or asks for browser-based visual tweaking
  • a task has already entered .pen editing, canvas changes, or Pencil MCP execution
  • a task needs a lightweight public HTML editor with right-side controls, drag/resize/rotate, and export
  • you need public-safe handshake, canvas reads, batch edits, screenshot review, or lock-safe patches
  • you are releasing a public repo and need the Pencil layer to stay useful without leaking private assets

Do Not Use This Skill For

  • deciding the whole page concept, page skeleton, or product architecture
  • deciding what a reference is worth taking without upstream distillation
  • bundling or redistributing official Pencil
  • promising the Web 2.0 editor is a full Figma, Illustrator, or internal julilaoshi-design replacement
  • shipping activation files, tokens, or account state
  • leaking internal benchmark packs or private case libraries
  • redistributing third-party paid tools without clear permission
  • presenting an unofficial repo as if it were the official Pencil project

Core Rules

  1. Keep the official dependency external.
  2. Choose the mode first: Pencil MCP or julilaoshi-design Web 2.0.
  3. If the user has not clearly chosen a mode, ask the mode question before editing anything.
  4. Reply in the user's language unless they ask otherwise.
  5. In Pencil MCP mode, handshake first, then work.
  6. In Web 2.0 mode, verify the static HTML opens locally before editing behavior.
  7. Read structure before editing.
  8. Batch when possible, do not fragment edits.
  9. Locked pages get only surgical changes.
  10. Always verify with a screenshot or equivalent review step.
  11. Public repos ship method, templates, and checks, not the whole moat.
  12. Never commit tokens, local paths, machine-specific state, or private screenshots.
  13. Third-party tools and assets must follow their own licenses.
  14. When references matter, use takeaway-skill first instead of guessing strategy inside the execution layer.

Read the full file on GitHub · 344 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. 10d ago First seen · 344 lines · 68 tokens per session scan A 674bfc90a54d

Subscribe to this mod's changes

julilaoshi-design is a skill published in the GitHub repository julilaoshi/julilaoshi-design (119 stars, last pushed 20d ago), licensed MIT. It adds 68 tokens to every session and 3,067 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 2026-08-30.

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