Excalidraw Architect MCP
Every diagram your engineering docs need — as hand-drawn Excalidraw, generated by your AI.
Twenty-five diagram types. Architecture and flowcharts, but also sequence diagrams, state machines, ER models, swimlanes, timelines, Gantt charts, quadrants, funnels, and hand-sketched bar/line/scatter charts. No coordinates to hallucinate, no Figma, no stale PNGs.
The Problem
When you're onboarding onto a codebase, designing a new system, or documenting how something works, a diagram communicates in seconds what pages of text can't. But the options aren't great.
Mermaid is quick to generate and locked down — you can't drag a node, group things visually, or annotate it afterwards. Figma means thirty minutes of manual work per picture. And when an LLM writes Excalidraw JSON directly it hallucinates coordinates: boxes overlap, arrows tangle, and you fix it by hand.
Worse, most tools only cover one diagram type well. The moment your doc needs a sequence diagram next to the architecture sketch, you're switching tools and the two look nothing alike.
