Lanhu Design Secure Agent Skill

Securely read and incrementally sync Lanhu (蓝湖) UI design project links from lanhuapp.com, including screenshots, version-pinned HTML/CSS…

Context cost
13.9k tokensestimated from the bundle, loaded when it triggers
Bundle
23 files · 241.5 kB16 scripts among them — read before you run
Licence
MITthe author’s own terms
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

Securely read and incrementally sync Lanhu (蓝湖) UI design project links from lanhuapp.com, including screenshots, version-pinned HTML/CSS specs, design tokens, and Web/iOS/Android slices. Use when a request mentions 蓝湖, Lanhu, a lanhuapp.com project URL, design handoff, UI implementation from Lanhu, slice export, or keeping a Lanhu project synchronized with a codebase. Do not use for Lanhu PRD docId links, standalone Figma/Sketch files, or unrelated image editing.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

cssdesign
Filed under

Design & Media

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md5.8 kB · preview
--- name: lanhu-design-secure ---
6# Lanhu Design Secure
7
8Use the bundled Node.js scripts to read Lanhu through a dedicated, persistent browser session while keeping every artifact tied to one design version.
9
10Read references/lanhu-design-tools.md for complete command contracts. Read references/design-implementation-rules.md before implementing UI.
11
12## Authenticate without copying Cookies
13
14Require Node.js 20.9+, Chrome or a supported Edge channel, and a dedicated, read-only Lanhu account. Do not ask the user to copy a Cookie.
15
16On first use, install the exact locked browser and image-validation runtimes if they are absent:
17
18```bash
19node scripts/install_browser_runtime.mjs
20```
21
22Then run the requested command normally. A dedicated Lanhu browser opens when no valid session exists. Hand control to the user for login; do not type, read, inspect, export, or store credentials yourself. After login, minimize the window and let the private local broker keep that same browser process alive across commands. Authentication expiry opens the same login window again without requiring DevTools or terminal secrets.
23
24- Keep the managed profile at ~/.lanhu-design-secure/browser-profile with directory mode 0700.
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md794 words
Files23
LicenceMIT
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈130
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
13,820
on trigger
The instruction body and 22 supporting files, read only when the skill fires.
7.0%
of a 200k window
Ten skills this size would take about 70% of the window before you open a file.
050k100k150k200k context window

13.9k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

23 files, 241.5 kB on disk. Mostly text — the instructions the model reads — with 16 scripts in it that your client would run only if the instructions tell it to.

  • SKILL.md5.8 kB
  • LICENSE.txt1.1 kB
  • package.json0.3 kB
  • package-lock.json21.0 kB
  • agents/openai.yaml0.3 kB
  • references/design-implementation-rules.md15.7 kB
  • references/lanhu-design-tools.md11.6 kB
  • scripts/browser-broker.mjs0.7 kB
  • scripts/browser-session.mjs55.2 kB
  • scripts/design-converter.mjs36.4 kB
  • scripts/design-specs.mjs2.3 kB
  • scripts/download_design_images.mjs5.0 kB
  • scripts/download_slices.mjs9.6 kB
  • scripts/get_design_slices.mjs1.8 kB
  • scripts/get_design_specs.mjs4.4 kB
  • scripts/get_designs.mjs0.9 kB
  • scripts/install_browser_runtime.mjs1.9 kB
  • scripts/lanhu_login.mjs1.0 kB
  • scripts/lanhu_session.mjs0.8 kB
  • scripts/lanhu-client.mjs21.7 kB
  • scripts/safe-files.mjs2.9 kB
  • scripts/secure-http.mjs29.0 kB
  • scripts/sync_project.mjs12.1 kB
What is not in it

A skill installs nothing and depends on nothing: it is a folder your client reads. This one carries 16 scripts beside the text, so the bundle is 23 files you can review in full before installing. The MIT licence covers the templates and examples as well as the instructions.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Lanhu Design Secure · 13.9k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/lanhu-design-secure/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/lanhu-design-secure" ] && { [ ! -e .claude/skills/lanhu-design-secure ] || { mv .claude/skills/lanhu-design-secure "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/lanhu-design-secure" .claude/skills/ && echo "Installed .claude/skills/lanhu-design-secure"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add em22ma/lanhu-design-secure

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/lanhu-design-secure/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/lanhu-design-secure/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/lanhu-design-secure" ] && { [ ! -e ~/.claude/skills/lanhu-design-secure ] || { mv ~/.claude/skills/lanhu-design-secure "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/lanhu-design-secure" ~/.claude/skills/ && echo "Installed ~/.claude/skills/lanhu-design-secure" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/lanhu-design-secure/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referenceem22ma/lanhu-design-secure

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

Reviews

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Anybody with an account, one review each. It carries the version that was current when you wrote it, and the publisher may reply once.

Who wrote it

EM
Em22ma

Publishes on mcprush.

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