What is the Hard constraints prefix?

A paste-ready block detailing framework, tokens, and component contracts used by Stitch.

Can I trigger this for non-Stitch tasks?

The skill is tailored for Stitch; triggers include Stitch, vant, vant4; using it for other tasks may be unsupported.

Yes, it targets Vant 4 for Vue 3 and mobile-first layouts.

stitch-ui-design-spec-vant

npx machina-cli add skill partme-ai/stitch-skills/stitch-ui-design-spec-vant --openclaw

Files (1)

SKILL.md

2.9 KB

Vant Design Spec (Vant 4 / Vue 3)

Constraint: Only use this skill when the user explicitly mentions "Stitch".

Purpose

This skill makes the Vant 4 design spec executable in two modes:

Prefix mode: output a paste-ready Hard constraints prefix for Stitch [Context].
Selector mode: output CONTRACT_SELECTION_JSON_V1 and then an assembled Stitch prompt that injects only the required component/state snippets.

Trigger Keywords

Prefer this skill when the user request includes any of:

vant, vant4, vant-ui, vant ui

Chinese trigger keywords (only for triggering):

vant 风格
vant 组件库

Source of Truth

references/contract.md
references/examples.md
references/official.md

Output (STRICT)

Decide the mode by the user intent:

If the user asks for beautify/polish/refine an existing screen, or asks for selector / JSON / contracts.include / states.include → use Selector mode.
Otherwise → use Prefix mode.

Prefix mode

Return exactly one code block:

[Hard constraints prefix]
- Framework: Vant 4 (Vue 3 / Mobile).
- Design Tokens:
  - Colors: Primary=#1989fa (Blue), Success=#07c160, Warning=#ff976a, Danger=#ee0a24.
  - Background: Page=#f7f8fa, Card=#ffffff.
  - Typography: Base 14px.
  - Radius: sm=2px, md=4px, lg=8px.
- Component Contracts:
  - Layout: Use <van-row>, <van-col span="...">. Container: <van-config-provider>.
  - List/Card: Use <van-cell-group inset> for card style groups.
  - Buttons: Use <van-button type="primary" round block>.
  - Forms: Use <van-form>, <van-field>, <van-search>, <van-picker>, <van-date-picker>.
  - Business: <van-card> (Product), <van-submit-bar>, <van-address-list>, <van-coupon-list>.
  - Navigation: <van-nav-bar>, <van-tabbar>, <van-sidebar>, <van-tabs>.
  - Feedback: <van-action-sheet>, <van-swipe-cell>, <van-empty>.
- Layout Invariants:
  - Mobile First (375px base).
  - Use Flexbox for alignment.
  - Respect Safe Area.

Selector mode

Return exactly two code blocks, in this order, with no extra prose:

Contract selection JSON:

{
  "version": "CONTRACT_SELECTION_JSON_V1",
  "designSystem": "vant4",
  "mode": "selector",
  "contracts": { "include": [] },
  "states": { "include": [] }
}

Final Stitch prompt:

[Context]
(Paste Hard Constraints Prefix here)
(Add "Layout Invariants" from contract.md if beautifying)

[Layout]
(Describe the macro layout structure, e.g., "Mobile Column Layout with Navbar")

[Components]
(Inject component snippets matching the JSON selection above)

References

Source

git clone https://github.com/partme-ai/stitch-skills/blob/main/skills/stitch-ui-design-spec-vant/SKILL.mdView on GitHub

Overview

This skill generates Vant 4 design specs for Stitch in two modes: a paste-ready hard-constraints prefix and a selector-based contract prompt. It outputs framework tokens, component contracts, and layout invariants to speed up Vue 3 mobile UI design.

How This Skill Works

Based on user intent, it returns either a single Hard constraints prefix (Prefix mode) or two blocks: a CONTRACT_SELECTION_JSON_V1 and a final Stitch prompt (Selector mode). It enforces Vant 4 components and mobile-first layout rules, ensuring the prompt is ready to paste or to feed into Stitch with selective snippets.

When to Use It

You want a paste-ready hard constraints prefix for a new Stitch task using Vant 4.
You need a selector-mode output that includes only the required component/state snippets.
You are beautifying or refining an existing screen and require a contract-based prompt (selector mode).
You want to enforce mobile-first layout, 375px base, and Flexbox alignment in the spec.
You’re assembling common Vant 4 elements (van-row, van-col, van-button, van-card, etc.) per the design spec.

Quick Start

Step 1: Identify user intent (Prefix vs Selector) and mention Stitch.
Step 2: Request or supply the relevant context (components, layout).
Step 3: Paste the resulting blocks into Stitch and iterate.

Best Practices

Verify your trigger intent before generating output (Prefix vs Selector).
Stick to Vant 4 and Vue 3 syntax; include correct component names (van- tags).
Keep design tokens consistent with the spec (colors, radius, typography).
Include Layout Invariants (mobile-first base, Safe Area) when using Prefix mode.
Test selector outputs by validating contract includes and state snippets only.

Example Use Cases

Prefix mode: Paste-ready hard constraints for a product grid using van-row, van-col, and van-card.
Selector mode: CONTRACT_SELECTION_JSON_V1 with includes for van-nav-bar and van-tabs, followed by assembled prompt.
Prefix mode: Login screen with van-form, van-field, and van-button.
Selector mode: Mobile settings screen with van-list and van-card states.
Example: 375px mobile-first layout with flex alignment and safe area considered.

Frequently Asked Questions

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