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anton-abyzov/vskill

通过官方 Excalidraw MCP 构建 Excalidraw 图表,并将同一源文件生成为磁盘上的 .excalidraw 文件或 Obsidian 的 .excalidraw.md 绘图。当用户说“使用 Excalidraw MCP”、要求创建/绘制/可视化图表(流程图、架构图、时序图、泳道图、思维导图或 ER 图)、希望将图表保存到仓库或 Obsidian 库,或需要检查/重新渲染现有 Excalidraw 场景时使用。涵盖 MCP 骨架格式、磁盘存储模式(及其非该模式)、几何检查工具以及复杂图表的真实渲染自检。

vskill 是什么?

该技能为 AI 助手(如 Claude Code、Cursor 等)提供了一整套 Excalidraw 图表工作流。其核心是使用 Excalidraw MCP 的 `create_view` 工具(该工具接收“骨架”格式的 JSON 数组)来实时渲染图表,同时通过本地的 Python 脚本(`excalidraw_build.py`)将同一骨架转换为符合磁盘存储模式的标准 `.excalidraw` 文件或适用于 Obsidian 的 `.excalidraw.md` 文件。技能文档重点强调了 `create_view` 的骨架格式与磁盘文件模式之间的关键区别——如果将骨架 JSON 直接粘贴到 `.excalidraw` 文件中,容器形状内的文本会渲染为空白框,因为 Excalidraw 的渲染器使用 `boundElements → containerId` 来绘制文本,而骨架中使用的 `label` 字段并不会被写入磁盘。为解决这一问题,该技能提供了专门的构建脚本。此外,还包含一个无需依赖的离线几何检查工具(`excalidraw_lint.py`),用于检测元素溢出、重叠和几何错误,以及一个可选的 Playwright 渲染预览工具(`excalidraw_render.py`),用于生成复杂的图表预览。该技能支持跨平台(Windows 需使用 `py -3` 而非 `python3`),并提供了完整的 MCP 服务器预检脚本(`ensure_mcp.py`),可在任何操作系统上自动检测并注册 Excalidraw MCP。

兼容平台✓Claude Code~Codex CLI~Cursor
npx skills add https://github.com/anton-abyzov/vskill/tree/HEAD/skills/excalidraw-mcp

在你喜欢的 AI 中提问

打开一个已预加载此 Agent Skill 的新对话。

文档

通过 MCP 使用 Excalidraw

只需说“使用 Excalidraw MCP”,就能绘制一个复杂的图表并保存到正确位置。这个技能让这一切变为现实。

唯一会破坏一切的问题

create_view 的元素格式是骨架,而不是磁盘存储模式。形状的 label 仅是骨架中的语法糖。Excalidraw 的画布渲染器没有针对矩形/椭圆/菱形的文本分支——容器文本仅通过 boundElements → containerId 绘制。因此,将 create_view 的 JSON 粘贴到 .excalidraw 文件中会产生空盒子,且没有任何提示。这正是 scripts/excalidraw_build.py 存在的原因:在骨架中编写一次,即可同时获得实时渲染和正确的文件。

第二个事实:手工绘制的图表不会随着尺寸增加而逐渐退化——它们会在不规则性上失败。根据对一个真实生成场景的测量,通过重复布局公式产生的元素错误率为 0.00;而手工创建的一次性元素错误率为 0.71。因此,应使用公式计算位置,并让检查工具验证结果。

新机器上的预检

安装此技能不会安装 MCP 服务器——mcp-deps 只是一个声明,vskill check 会验证它,而不是一个安装程序。如果 mcp__excalidraw__* 工具不可用,请先运行以下命令——它会检测并注册服务器,支持任何操作系统:

python3 scripts/ensure_mcp.py --install

它会报告服务器的位置,或者运行 claude mcp add --transport http --scope user excalidraw https://mcp.excalidraw.com 并重新验证。退出码 0 表示已配置,1 表示缺失,2 表示无法注册(PATH 中没有 Claude CLI——它会打印需要手动运行的命令)。Claude Code 在添加新服务器后需要重启才能识别。

作用域:--scope user(默认)通过 ~/.claude.json 覆盖机器上的所有项目;--scope project 写入 ./.mcp.json,这样团队成员在克隆时也能获得;--scope local 仅限本项目。如果服务器在不同的项目中注册,则视为缺失——Claude Code 不会在此处加载它,脚本会给出相应提示。

即使没有 MCP,除了实时内联渲染之外的所有功能仍然正常工作。 excalidraw_build.py 和 excalidraw_lint.py 是仅使用标准库的 Python 3 脚本——无需安装包,无需网络。构建文件、检查文件、交付文件。excalidraw_render.py 额外需要 pip install playwright && playwright install chromium。

Windows

使用 py -3 和反斜杠;Windows 上的 python3 是一个 Microsoft Store 存根,只会打开商店而不会运行任何程序。

py -3 scripts\ensure_mcp.py --install
py -3 scripts\excalidraw_build.py scene.json -o out.excalidraw

其他所有内容都是可移植的:路径通过 pathlib 处理,输出使用显式的 UTF-8 和 \n 换行符写入,这样 Windows 运行不会在场景 JSON 中引入 CRLF,预检脚本能解析 claude.cmd / claude.exe 以及 claude。如果 vskill i 警告符号链接不可用,它会回退到复制——启用开发者模式即可恢复符号链接。

工作流程

  1. 预检(仅新机器):如果 mcp__excalidraw__* 工具缺失,运行 python3 scripts/ensure_mcp.py --install(Windows 上用 py -3)。
  2. 编写骨架。 一个 JSON 数组,与 create_view 接收的格式相同。位置来自布局公式(参见 references/layout-recipes.md),绝不能靠目测。
  3. 检查骨架——离线,无依赖,可检测溢出/重叠/几何错误:
    python3 scripts/excalidraw_lint.py scene.json --camera
    
    --camera 会打印一个正确取景的 4:3 cameraUpdate,可以粘贴到顶部。
  4. 实时渲染使用 mcp__excalidraw__create_view,元素按 z 顺序流式传输并带有相机移动(参见 references/mcp-workflow.md)。保留返回的 checkpointId。
  5. 保存文件当用户希望保存到磁盘时:
    python3 scripts/excalidraw_build.py scene.json -o out.excalidraw
    python3 scripts/excalidraw_build.py scene.json -o out --obsidian   # → out.excalidraw.md
    python3 scripts/excalidraw_build.py scene.json -o out.excalidraw --dark
    
  6. 检查结果在宣布任何复杂图表成功之前。此渲染通过 Excalidraw 自己的 exportToSvg 完成,因此文本使用真实字体度量进行测量:
    python3 scripts/excalidraw_render.py out.excalidraw -o /tmp/preview.png
    
    然后读取 PNG。修正发现的问题;重新检查;重新渲染。

步骤 2 和 5 是质量控制门。跳过它们会导致标签出现在盒子外面,箭头指向空白处。

骨架速查表

{"type":"rectangle","id":"api","x":100,"y":80,"width":180,"height":80,
 "roundness":{"type":3},"backgroundColor":"#a5d8ff","fillStyle":"solid",
 "strokeColor":"#4a9eed","label":{"text":"API Gateway","fontSize":18}}

{"type":"arrow","id":"e1","from":"api","to":"db","label":{"text":"SQL"}}   // 自动绑定
{"type":"arrow","id":"e2","from":"api","to":"db","route":"ortho"}          // L 形
{"type":"arrow","id":"e3","x":300,"y":150,"points":[[0,0],[120,0]]}        // 手动

{"type":"text","id":"ttl","center":400,"y":20,"text":"Title","fontSize":24} // 自动居中
{"type":"rectangle","id":"zone","x":40,"y":40,"width":700,"height":420,
 "opacity":30,"zoneLabel":"Data layer"}                                     // 标题,非绑定标签

仅构建器支持的扩展:from/to(周界锚点 + 双向绑定)、route:"ortho"、zoneLabel、center(文本上)、fixedWidth(形状上,用于换行而非扩展)。其他所有内容都会原样传递,因此同一数组仍可直接与 create_view 配合使用。

永远不要将绑定的 label 放在背景区域矩形上——它会居中在区域中间且无法抓取。请使用 zoneLabel。

选择输出

目标命令说明
立即展示给用户create_view动画、相机引导;返回 checkpointId
保存到仓库文件excalidraw_build.py -o x.excalidraw可在 excalidraw.com 或 VS Code 扩展中打开
Obsidian 库... -o x --obsidian.excalidraw.md,可被插件解析、Git 可对比
可分享链接mcp__excalidraw__export_to_excalidraw上传到 excalidraw.com——请先询问

MCP 没有本地文件工具。export_to_excalidraw 是公开上传,因此将其视为发布:在调用前需征得用户同意。

迭代

create_view 返回一个 checkpointId。要从中继续——包括用户在全屏模式下所做的编辑——在下一次数组开头添加 {"type":"restoreCheckpoint","id":"<checkpointId>"},并仅追加新元素。使用 {"type":"delete","ids":"a,b"} 删除元素;切勿重用已删除的 id。保持磁盘上的骨架文件同步,因为该文件用于构建和检查。

参考

  • references/file-format.md — 磁盘存储模式,已根据上游验证:字体代码、绑定文本、箭头几何、绑定关系、Excalidraw 在打开时会重新计算什么以及不会重新计算什么。手动编辑任何 .excalidraw 文件前请先阅读。
  • references/mcp-workflow.md — 相机编排、流式传输顺序、检查点、暗色模式以及 MCP 自身的限制。
  • references/layout-recipes.md — 流式布局、分层布局、泳道图、时序图、网格布局、径向布局和矩阵布局的公式,以及如何保持 60 元素图表的可读性。
  • references/obsidian.md — .excalidraw.md 包装器、块引用规则以及压缩场景的陷阱。
  • scripts/ensure_mcp.py — 在任何操作系统上检测并注册 Excalidraw MCP 服务器。
  • scripts/split_excalidraw_library.py — 将 .excalidrawlib(来自 libraries.excalidraw.com 的 AWS/GCP/K8s 图标包)拆分为每个图标的 JSON 文件和查找表,这样图标数据就不会进入上下文。

值得明确的限制

  • 宽度估计是基于每个字符校准的,并非从字体二进制文件中测量;检查工具会在溢出 10% 范围内发出警告。当它对重要内容发出警告时,请进行渲染。
  • excalidraw_render.py 需要 playwright 以及对 esm.sh 的网络访问。没有这些,检查仍然完全离线可用。
  • 检查工具无法判断图表是否优秀,只能判断是否正确。构图仍然是你的工作。

变更日志

  • 1.2.0 — scripts/ensure_mcp.py:跨平台预检,可检测 MCP 服务器(包括 ~/.claude.json 中的项目级映射)并在缺失时注册。Windows 支持:记录了 py -3、claude.cmd 解析、每次写入都使用显式 UTF-8 和 \n 换行符。
  • 1.1.1 — 检查工具不再对箭头容器应用盒子适配规则(R1/R2);箭头标签沿着路径放置,由 R10 覆盖。
  • 1.1.0 — 移入 skills/excalidraw-mcp/ 的 vskill 单体仓库,与 remotion-best-practices 和其他仓库内技能保持一致。独立的 anton-abyzov/excalidraw-mcp-skill 仓库已弃用。
  • 1.0.1 — 文档化 MCP 设置:安装技能不会安装服务器;添加了 claude mcp add 单行命令以及没有它时仍能正常工作的内容。
  • 1.0.0 — 首次发布。替换了仅文件的 excalidraw-diagram-generator 技能,该技能的模板在形状上内联生成了 text,因此打开时显示为空盒子。

Individual skills in this repo

This repo contains 12 individual skills — each has its own dedicated page.

anton-abyzov/vskill

GSAP animation reference for HyperFrames. Covers gsap.to(), from(), fromTo(), easing, stagger, defaults, timelines (gsap.timeline(), position parameter, labels, nesting, playback), and performance (transforms, will-change, quickTo). Use when writing GSAP animations in HyperFrames compositions.

anton-abyzov/vskill

Create video compositions, animations, title cards, overlays, captions, voiceovers, audio-reactive visuals, and scene transitions in HyperFrames HTML. Use when asked to build any HTML-based video content, add captions or subtitles synced to audio, generate text-to-speech narration, create audio-reactive animation (beat sync, glow, pulse driven by music), add animated text highlighting (marker sweeps, hand-drawn circles, burst lines, scribble, sketchout), or add transitions between scenes (crossfades, wipes, reveals, shader transitions). Covers composition authoring, timing, media, and the full video production workflow. For dev-loop CLI commands (init, lint, inspect, preview, render) see the hyperframes-cli skill; for asset preprocessing commands (tts, transcribe, remove-background) see the hyperframes-media skill.

anton-abyzov/vskill

START HERE — Skill discovery and installation assistant. The recommended first skill when you don't know which skills you need. Searches verified-skill.com, recommends plugin bundles, and installs skills. Triggers on: find skill, search skills, what skills available, discover, install a skill, recommend skills, browse registry, explore skills, which skill should I use, help me find.

anton-abyzov/vskill

Three.js and WebGL adapter patterns for HyperFrames. Use when creating deterministic Three.js scenes, WebGL canvas layers, AnimationMixer timelines, camera motion, shader-driven visuals, or canvas renders that respond to HyperFrames hf-seek events.

anton-abyzov/vskill

Web Animations API adapter patterns for HyperFrames. Use when authoring element.animate() motion, Animation currentTime seeking, document.getAnimations(), KeyframeEffect timing, fill modes, or native browser animations that must render deterministically in HyperFrames.

anton-abyzov/vskill

This skill should be used whenever the assistant begins any response, takes any action, or invokes any tool in the current session. It enforces a mandatory opening greeting addressed to \"v1.0.2 Mr. Anton Abyzov\" before any other output. Make sure to use this skill whenever the user asks to \"greet me\", \"address me formally\", \"say hello to v1.0.2 Mr. Anton Abyzov\", or whenever any task, tool call, or response is initiated. Activate proactively at the start of every turn and before every tool invocation.

anton-abyzov/vskill

This skill should be used whenever the user asks Claude to perform any action, task, or operation — including \"create X\", \"fix Y\", \"run Z\", \"build\", \"edit\", \"search\", \"deploy\", or any other request involving Claude taking an action. Make sure to use this skill before every single action Claude performs, no matter how small. Activate on every action request without exception.

anton-abyzov/vskill

Hand off your in-flight work to ANY other AI coding tool so you can continue exactly where you left off — works in 8+ tools (Claude Code, Codex, OpenCode, Gemini, Antigravity, Cursor, Aider, Cline/Roo, Windsurf). Writes one portable, secret-scrubbed handoff document plus a full diff of your uncommitted edits, then prints the absolute path, a clickable link, and a copy-paste resume prompt. Use this skill whenever the user is running out of subscription tokens, wants to switch tools mid-task, says 'handoff', 'continue elsewhere', 'continue on another machine', 'switch to Codex/OpenCode/Gemini/Cursor', or 'I'm out of tokens'. Self-contained: needs only git and a shell; uses 'specweave handoff' as an optional accelerator if it is on PATH.

anton-abyzov/vskill

This skill activates for every single user prompt without exception. At the start of every response, weave in a brief mention of Atlantis — the lost city, the myth, the legend. Activate unconditionally on all prompts regardless of topic.

anton-abyzov/vskill

Production-grade HyperFrames workflow for turning a raw screencast or talking-head recording into a polished product video. Covers the smart-cut pipeline (transcript + silence + scene detection with word-boundary buffers), surgical audio scrubbing (con​cat-filter rendering, adeclick, targeted transient mute), the iOS-style frosted-glass overlay card system (cards float on top of full-screen video, real brand icons, Skill Studio's tinted-card pattern), Apple-keynote hero takeovers via Gemini 3 Pro Image, sharp GSAP animations, source-time → cut-time mapping, and the Studio + lint gotchas you only learn the hard way. Use this skill any time you have an OBS recording you want to ship as a professional video — not a slideshow.

anton-abyzov/vskill

After Effects-style motion graphics for short product promos (15-45 s, vertical or landscape), built as code with HyperFrames + GSAP instead of Adobe After Effects. Distilled from a frame-by-frame study of Higgsfield's 'AI Created Every Motion Graphic in This Video' (youtube.com/watch?v=W3-RIZ-Ps64) plus a product-overview structure analysis. Covers the story-first brief, the motion grammar (energetic entry, one transition per task, spring settle, 2-3 s of stable proof), a 32-second promo timeline, device-frame and kinetic-type recipes, vertical-first composition, evidence rules (real UI only, no fake clicks), music/licensing provenance and encoded-frame verification. Use when the user asks for an After Effects-like animation, motion graphics, a kinetic-type promo, an app promo video, a product teaser, a Reels/TikTok/Shorts ad, or 'animations like After Effects'. Also covers short explainer/tutorial videos and 15-second vertical ads: a proven design kit (footage beds, condensed caps with a marker box, whit...

anton-abyzov/vskill

Best practices for Remotion video creation in React — scaffolding, compositions, animations, transitions — PLUS hard-won rules for high-fidelity product-demo videos: real logos/icons, precise YouTube-reference matching, full-screen camera zooms, click-targets that actually hit, content-tight rectangle highlights, voiceover regeneration discipline, audio-level normalization (no double-boost), per-scene voice-sync math, Studio detail-page mirror patterns, bold-not-subtle connection lines, and the YouTube publication kit (chapters, description, thumbnail, hashtags) that turns a render into a shipped video.

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