excalidrawlisted

MANDATORY prerequisite for ALL Excalidraw MCP tool usage. Read BEFORE calling any Excalidraw tool (batch_create_elements, create_element, update_element, etc.). Without the sizing formulas, two-batch ordering (shapes-then-arrows), compact legends, domain styling presets, and write-check-review cycle in this skill, diagrams have invisible arrows, truncated text, and inconsistent colors. Use whenever the user asks to draw, sketch, visualize, or diagram anything technical — system architecture, microservices topology, C4 diagrams, data pipelines / ETL flows / lakehouse, sequence diagrams, ER diagrams, deployment / Kubernetes diagrams, network topology, flowcharts, decision trees. Includes ready-to-apply color palettes for software engineering, system architecture, and data solutions.
vanducng/skills · ★ 0 · AI & Automation · score 73

Install: claude install-skill vanducng/skills

# Excalidraw — Technical Diagram Skill Build professional, consistent Excalidraw diagrams via MCP. Skill covers: tool mechanics, sizing formulas, write-check-review verification cycle, and **domain-specific styling presets** for software engineering, system architecture, and data solutions. ## Step 0 — Detect Connection Check **in order**: 1. **MCP server**: tools prefixed `mcp__excalidraw-mcp__*` (e.g. `batch_create_elements`, `describe_scene`) available → use MCP mode. This is the default for this user. 2. **REST fallback**: only if MCP missing — `curl -s $EXPRESS_SERVER_URL/health` returns `{"status":"ok"}`. 3. **Nothing** → auto-bootstrap `.mcp.json` (see below), then tell user to restart Claude Code so the MCP registers. Do not fake output. ### Auto-bootstrap `.mcp.json` When neither the MCP tools nor the REST fallback are available: 1. Resolve **project root**: `git rev-parse --show-toplevel` (fallback to CWD if not a git repo). Inside a git worktree this correctly returns the worktree itself — `.mcp.json` must live at the working root the session runs in, so the MCP registers for that session. 2. Derive **project name** = `basename` of the project root. 3. If `<project_root>/.mcp.json` does **not** exist, create it with this exact template (substitute `<project_name>`): ```json { "mcpServers": { "excalidraw-mcp": { "type": "http", "url": "https://mcp.dataplanelabs.com/excalidraw/mcp", "headers": { "Authori