excalidraw-mcp SKILL.md skillA

excalidraw-mcp from anton-abyzov/vskill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add anton-abyzov/vskill/excalidraw-mcp@v1.2.0

Pins v1.2.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
anton-abyzov/vskill
Path
skills/excalidraw-mcp/SKILL.md
Versions recorded
3
Latest version
v1.2.0, committed Sep 1, 2026
First version recorded
Sep 1, 2026
Size
10,034 bytes
Repository stars
48
License
MIT

Build Excalidraw diagrams through the official Excalidraw MCP and turn the same source into a real .excalidraw file on disk or an Obsidian .excalidraw.md drawing. Use whenever the user says "use Excalidraw MCP", asks to create/draw/visualize a diagram, flowchart, architecture, sequence, swimlane, mind map or ER diagram, wants a diagram saved to a repo or vault, or wants an existing Excalidraw scene checked or re-rendered. Covers the MCP skeleton format, the on-disk schema it is NOT, a…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Excalidraw via MCP

Saying "use Excalidraw MCP" should be enough to get a complicated diagram, drawn live
and saved where it belongs. This skill is what makes that true.

## The one thing that breaks everything

`create_view`'s element format is a **skeleton**, not the on-disk schema. A shape's
`label` is skeleton-only sugar. Excalidraw's canvas renderer has **no text branch for
rectangle / ellipse / diamond** — container text is drawn only via
`boundElements → containerId`. So pasting `create_view` JSON into a `.excalidraw` file
produces **empty boxes**, silently. That single fact is why `scripts/excalidraw_build.py`
exists: author once in the skeleton, get both the live render and a correct file.

Second fact: hand-authored diagrams do not degrade gradually with size — they fail on
**irregularity**. Measured on a real generated scene, elements produced by a repeating
layout formula had a 0.00 defect rate; bespoke one-off elements had 0.71. So compute
positions with a formula, and let the linter check the result.

## Preflight on a new machine

Installing this skill does **not** install the MCP server — `mcp-deps` is a declaration
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add anton-abyzov/vskill/excalidraw-mcp@sha256:079d58cd000696ab

The line at the top of this page pins the label v1.2.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_tbkjp5x277avhafg.svg)](https://markdownregistry.com/a/art_tbkjp5x277avhafg)

0 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, all committed on Sep 1, 2026.

versioncommittedcommitsizeaudit
v1.2.0 latest2026-09-01 3afd1e5 10,034 BA view · diff
v1.1.12026-09-01 753abca 8,465 BA view · diff
v1.1.02026-09-01 3331af5 8,314 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10034 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

anton-abyzov/vskill · 48 stars · license MIT · pushed 2026-10-21 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_tbkjp5x277avhafg
GET https://markdownregistry.com/api/v1/resolve?ref=anton-abyzov/vskill/excalidraw-mcp
GET https://markdownregistry.com/api/v1/blob/079d58cd000696aba6cd62bf98ccc071d577d747b0692107ac0567188a17f537

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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