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Excalidraw Diagram Skill

Name: Excalidraw Diagram Skill (Claude Skill)
Author: coleam00

作者 coleam00 · coleam00/excalidraw-diagram-skill

Skill that gives Claude the ability to generate Excalidraw diagrams.

This skill teaches Claude to produce Excalidraw .excalidraw JSON files — architecture diagrams, sequence diagrams, mind maps — that open natively in Excalidraw and stay editable. No screenshot-and-pray.

▶ 觀看演示 📦 安裝 💡 使用場景

為什麼要用

核心特性

Outputs native .excalidraw JSON (fully editable)
Pre-baked layouts for architecture, sequence, flow, mind map
Smart auto-layout to avoid label overlap
Annotation arrows with proper anchoring
Works in any agent (Claude Code, Cursor, Codex)

即時演示

實際使用效果

excalidraw-diagram-skill.replay ▶ 就緒

0/0

安裝

作者儲存庫 · Claude Skills 官方文件

使用場景

實戰用法： Excalidraw Diagram Skill

Generate an editable architecture diagram from a description

👤 Engineers documenting systems ⏱ ~15 min intermediate

何時使用： You want a diagram you can iterate on, not a static PNG.

前置條件

Server/skill installed and authenticated — See repo README

步驟

Describe the system

Using the Excalidraw skill, draw our auth flow: SPA → API gateway → auth-service → Postgres → emit event to Kafka.✓ 已複製

→ A .excalidraw file with labeled boxes + arrows
Iterate

Add a Redis cache between API gateway and auth-service.✓ 已複製

→ Updated file with the new node + correct re-routed arrows

結果： A diagram you actually edit, not redraw.

注意事項

For very large diagrams (>30 nodes) auto-layout struggles — For very large diagrams (>30 nodes) auto-layout struggles — split into multiple diagrams or group by concern.

成本與限制

運行它的成本

API 配額: See provider docs for rate limits
每次呼叫 Token 數: Varies by tool
費用: See repo README for pricing details
提示: Cache tool results and avoid repeated identical calls.

安全

權限、密鑰、影響範圍

憑證儲存： Use environment variables; never commit secrets

資料出站： Tool calls go to the provider's API as documented

故障排查

常見錯誤與修復

file doesn't open in Excalidraw

Make sure the file ends with .excalidraw and is valid JSON. The skill outputs both, but check the extension.

驗證： Open at excalidraw.com → load file

arrows pointing wrong way

Excalidraw's arrow startBinding/endBinding matters. The skill's templates handle it, but custom edits can break it.

驗證： Reload the file

替代方案