Pencil MCP Open Document

Tools

This skill is designed to call the Pencil MCP tool:

• open_document

If your client namespaces MCP tools, it may appear as mcp__pencil__open_document. Full parameter details: see docs/pencil-mcp-tools.md in the pencil-skills repository.

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., "Open file" might refer to reading a code file, not a .pen design).

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

ALWAYS use this skill when:

• The user asks to create a new design document in Pencil.
• The user provides a file path and asks to open it with Pencil.
• You need to switch the active editor to a specific .pen file.

Trigger phrases include:

• "Create a new document in Pencil" (在 Pencil 中新建文档)
• "Pencil open file..." (Pencil 打开文件...)
• "Start a new design with Pencil" (用 Pencil 开始新设计)
• "Pencil switch to [path]" (Pencil 切换到 [路径])

Input Parameters

• filePathOrTemplate (string, required):
  • Value: 'new' to create a fresh, empty document.
  • Value: Absolute file path (e.g., /path/to/design.pen) to open an existing file.
  • Note: No other template names are valid.

How to use this skill

1. Analyze Request: Determine if it's a "New" or "Open" request.
2. Call Tool:
   • For new: open_document(filePathOrTemplate='new')
   • For existing: open_document(filePathOrTemplate='/path/to/file.pen')

Examples

• New document: open_document(filePathOrTemplate='new') — initialize a fresh canvas.
• Open file: open_document(filePathOrTemplate='/path/to/design.pen') — open existing .pen file.
• Switch context: Same as open file; use when switching to another .pen in the same session.

Keywords

English keywords: open document, create file, new design, load file, switch document, initialize canvas

Chinese keywords (中文关键词): 打开文档, 创建文件, 新建设计, 加载文件, 切换文档, 初始化画布

References

• Pencil MCP 工具说明 — open_document 等方法的完整参数。

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。