Vant Design System Initializer

Constraint: Only use this skill when the user explicitly mentions "Pencil" and "Vant" (or "Vant 4") or when orchestrating a Pencil design system initialization task.

When to use this skill

Use this skill when you need to initialize a new design system based on Vant specifications, specifically to set up the global color palette and create the initial component library frames in a .pen file.

How to use this skill

This skill outputs a PENCIL_PLAN. The Agent then calls Pencil MCP tools in order: open_document, set_variables, batch_design, optionally get_screenshot.

Step 1: Initialize Variables (set_variables)

Use mcp__pencil__set_variables to register Vant design tokens. Follow .pen file schema.

Primary / Semantic

• van-primary-color: #1989fa
• van-success-color: #07c160
• van-warning-color: #ff976a
• van-danger-color: #ee0a24
• van-gray-color: #323233

Text & Border

• van-text-color: #323233
• van-text-color-2: #646566
• van-text-color-3: #969799
• van-border-color: #ebedf0
• van-border-radius: 4px

Font

• van-font-size-md: 14px

Fill from Vant theme docs if more tokens are needed.

Step 2: Create Component Overview Structure (batch_design)

Use mcp__pencil__batch_design to create a "Components Overview" frame with sections based on Vant documentation:

1. Basic (基础)
   • Button, Cell, Icon, Image, Layout, Popup, Space, ConfigProvider
2. Form (表单)
   • Calendar, Cascader, Checkbox, DatetimePicker, Field, Form, NumberKeyboard, PasswordInput, Picker, Radio, Rate, Search, Slider, Stepper, Switch, Upload
3. Feedback (反馈)
   • ActionSheet, Dialog, DropdownMenu, Loading, Notify, Overlay, ShareSheet, SwipeCell, Toast
4. Display (展示)
   • Badge, Circle, Collapse, CountDown, Divider, Empty, ImagePreview, Laziness, List, NoticeBar, Progress, Skeleton, Steps, Sticky, Swipe, Tag
5. Navigation (导航)
   • ActionBar, Grid, IndexBar, NavBar, Pagination, Sidebar, Tab, Tabbar, TreeSelect

Organize frames using Auto Layout. Keep each batch_design call to maximum 25 operations.

Best Practices

• Verify token values against Vant theme documentation.
• Use set_variables with replace: false unless a full reset is requested.
• Use Auto Layout for component overview frames.

Keywords

pencil, vant, vant 4, design system, init, variables, components

References

• references/contract.md – Design tokens and component naming.
• references/official.md – Link to official documentation.
• references/examples.md – Example PENCIL_PLAN.
• references/components.md – Component specifications.