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json-canvas SKILL.md skillA

json-canvas from davepoon/buildwithclaude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add davepoon/buildwithclaude/json-canvas@git:20260109.d473212

Pins git:20260109.d473212 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: davepoon/buildwithclaude
Path: plugins/all-skills/skills/json-canvas/SKILL.md
Versions recorded: 1
Latest version: git:20260109.d473212, committed Jan 9, 2026
Size: 12,026 bytes
Repository stars: 3,704
License: MIT

Create and edit JSON Canvas files (.canvas) with nodes, edges, groups, and connections. Use when working with .canvas files, creating visual canvases, mind maps, flowcharts, or when the user mentions Canvas files in Obsidian.

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

# JSON Canvas

This skill enables Claude Code to create and edit valid JSON Canvas files (`.canvas`) used in Obsidian and other applications.

## Overview

JSON Canvas is an open file format for infinite canvas data. Canvas files use the `.canvas` extension and contain valid JSON following the JSON Canvas Spec 1.0.

## When to Use This Skill

- Creating or editing .canvas files in Obsidian
- Building visual mind maps or flowcharts
- Creating project boards or planning documents
- Organizing notes visually with connections
- Building diagrams with linked content

## File Structure

A canvas file contains two top-level arrays:

```json
{
  "nodes": [],
  "edges": []
}
```

- `nodes` (optional): Array of node objects
- `edges` (optional): Array of edge objects connecting nodes

## Nodes

Nodes are objects placed on the canvas. There are four node types:
- `text` - Text content with Markdown
- `file` - Reference to files/attachments
- `link` - External URL
- `group` - Visual container for other nodes

### Z-Index Ordering

First node = bottom layer (displayed below others)
Last node = top layer (displayed above others)

### Generic Node Attributes
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add davepoon/buildwithclaude/json-canvas@sha256:141067e54bf7a66c

The line at the top of this page pins the label git:20260109.d473212, 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](https://markdownregistry.com/badge/art_k4qozhs2ghg763vh.svg)](https://markdownregistry.com/a/art_k4qozhs2ghg763vh)

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

Versions

The registry has recorded 1 version of this file, committed on Jan 9, 2026.

version	committed	commit	size	audit
git:20260109.d473212 latest	2026-01-09	d473212	12,026 B	A	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 (12026 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

davepoon/buildwithclaude · 3,704 stars · license MIT · pushed 2026-10-31 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_k4qozhs2ghg763vh
GET https://markdownregistry.com/api/v1/resolve?ref=davepoon/buildwithclaude/json-canvas
GET https://markdownregistry.com/api/v1/blob/141067e54bf7a66cd22a6d5cf284042b81484fe3e8195446196f431a111cc573

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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