pencil-mcp-batch-design

## Tools This skill is designed to call the Pencil MCP tool: * `batch_design` If your client namespaces MCP tools, it may appear as `mcp__pencil__batch_design`. ## When to use this skill ### Intent Recognition (CRITICAL) Even if a trigger phrase matches, you must **verify the user's intent**: 1. Is the user explicitly asking to use "Pencil"? 2. Is the current conversation context clearly about "Pencil" design tasks? **If the answer is NO, do NOT use this skill.** (e.g., if the user just says "Draw a rectangle" in a general context, they might mean Stitch, SVG, or Mermaid). **CRITICAL PREREQUISITE:** **You must ONLY use this skill when the user EXPLICITLY mentions "Pencil".** **ALWAYS use this skill when:** - You need to **Create**, **Update**, **Delete**, or **Move** elements on the canvas. - The user asks to "Draw", "Insert", "Change", "Remove" something **using Pencil**. - You are executing a design plan. **Trigger phrases include:** - "Draw a rectangle with Pencil" (用 Pencil 画一个矩形) - "Pencil update text content" (Pencil 更新文本内容) - "Insert component using Pencil" (使用 Pencil 插入组件) - "Pencil move node" (Pencil 移动节点) - "Delete selection with Pencil" (用 Pencil 删除选区) ## Input Parameters The `batch_design` tool accepts a JSON structure defining a list of operations. * **`operations`** (array, required): A list of operation objects. * **Insert (`I`)**: `{ "type": "insert", "targetId": "...", "node": { ... } }` * **Update (`U`)**: `{ "type": "update", "targetId": "...", "props": { ... } }` * **Replace (`R`)**: `{ "type": "replace", "targetId": "...", "node": { ... } }` * **Delete (`D`)**: `{ "type": "delete", "targetId": "..." }` * **Move (`M`)**: `{ "type": "move", "targetId": "...", "parentId": "..." }` **Important Notes:** * **Batch Limit**: Keep each call to max **25 operations**. Split larger tasks. * **Binding Names**: Create new binding names for every operation list. DO NOT reuse. * **Component Instances**: * Use `type: "ref"` and `ref: "ComponentID"` to insert instances. * Use `U()` with instance path to override properties. ## How to use this skill 1. **Plan Operations**: specific exactly what needs to change. 2. **Construct JSON**: Build the valid JSON payload matching the `.pen` schema. 3. **Call Tool**: Invoke `batch_design`. 4. **Handle Errors**: If an operation fails, the batch rolls back. Check the error message and retry with corrections. ## Examples ### 1. Simple: Insert Text Insert a simple text node into the current context. See [1-insert-text.json](examples/1-insert-text.json). ### 2. Medium: Create Layout Frame Create an Auto-Layout Frame with a child button. See [2-create-layout.json](examples/2-create-layout.json). ### 3. Complex: Component Instance & Overrides Insert a component instance and override its internal properties (e.g., changing button text) in one go. See [3-component-instance.json](examples/3-component-instance.json). ## Keywords **English keywords:** batch design, draw ui, update props, insert node, delete element, move layer, modify canvas **Chinese keywords (中文关键词):** 批量设计, 绘制UI, 更新属性, 插入节点, 删除元素, 移动图层, 修改画布