Pencil MCP Get Editor State

Tools

This skill is designed to call the Pencil MCP tool:

• get_editor_state

If your client namespaces MCP tools, it may appear as mcp__pencil__get_editor_state.

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., "What is selected?" might refer to selected text in the IDE, not the Pencil canvas).

CRITICAL PREREQUISITE: You must ONLY use this skill when the user EXPLICITLY mentions "Pencil".

ALWAYS use this skill when:

• You need to know what the user has currently selected on the canvas.
• You need to check the active document path.
• You are starting a new design task and need to orient yourself.
• The user asks "What am I looking at?" or "Get context" in Pencil.

Trigger phrases include:

• "Get Pencil editor state" (获取 Pencil 编辑器状态)
• "Check current selection in Pencil" (检查 Pencil 当前选区)
• "What is selected in Pencil?" (Pencil 中选中了什么？)
• "Where am I on the Pencil canvas?" (我在 Pencil 画布哪里？)

Input Parameters

• include_schema (boolean, optional):
  • Set to true if you want the .pen file schema to be included.
  • If you are already aware of the schema, set to false (default) to save context.

How to use this skill

1. Call the MCP Tool: Invoke get_editor_state.
2. Analyze Output:
   • Check selection: List of selected node IDs.
   • Check activePageId: Current page ID.
   • Check filePath: Path of the current document.

Examples

1. Simple: Basic State Check

Get the current state to understand what the user is looking at. See 1-basic-check.json.

2. Medium: State with Schema

Get state including the .pen file schema to understand the document structure definitions. See 2-with-schema.json.

3. Complex: State Verification (Explicit)

Explicitly checking state during a multi-step workflow where schema is already known. See 3-explicit-check.json.

Keywords

English keywords: get state, editor context, current selection, active document, canvas position, check environment

Chinese keywords (中文关键词): 获取状态, 编辑器上下文, 当前选区, 选中节点, 画布位置, 环境检查

能力边界

✅ 适用场景

• 当你需要使用此技能对应的技术栈时
• 当项目需要遵循最佳实践时
• 当需要快速上手或深入理解核心概念时

⚠️ 需要注意

• 复杂业务逻辑需要结合具体场景调整
• 性能优化需要根据实际数据量评估

❌ 不适用场景

• 不相关的技术栈或框架
• 需要完全自定义的特殊场景

常见陷阱 (Gotchas)

1. 版本兼容性：注意框架版本与依赖库的兼容性，不同版本 API 可能有差异
2. 配置文件格式：配置文件格式错误是最常见的问题，建议使用编辑器的语法检查
3. 环境变量：确保所有必要的环境变量已正确设置，敏感信息不要硬编码
4. 依赖冲突：多版本共存时注意依赖冲突，使用 lock 文件锁定版本
5. 性能陷阱：大数据量场景下注意性能优化，避免 N+1 查询等常见问题

使用流程

Step 1: 环境准备

确保开发环境已安装必要的依赖和工具。

Step 2: 配置初始化

根据项目需求进行基础配置。

Step 3: 核心功能使用

按照示例代码实现核心功能。

Step 4: 测试验证

运行测试确保功能正常。

Step 5: 部署上线

完成开发后进行部署和监控。