json-canvas SKILL.md skillA

This file is byte-identical to the first copy the registry indexed, one of 4 indexed copies. Same content hash, so the same checks give both the same grade.

json-canvas from spoon94/skill-vault is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add spoon94/skill-vault/json-canvas@git:20260520.f8f6935

Pins git:20260520.f8f6935 in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

spoon94/skill-vault

Path

obsidian/json-canvas/SKILL.md

Versions recorded

1

Latest version

git:20260520.f8f6935, committed May 20, 2026

Size

7,624 bytes

Repository stars

5

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 Skill

## File Structure

A canvas file (`.canvas`) contains two top-level arrays following the [JSON Canvas Spec 1.0](https://jsoncanvas.org/spec/1.0/):

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

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

## Common Workflows

### 1. Create a New Canvas

1. Create a `.canvas` file with the base structure `{"nodes": [], "edges": []}`
2. Generate unique 16-character hex IDs for each node (e.g., `"6f0ad84f44ce9c17"`)
3. Add nodes with required fields: `id`, `type`, `x`, `y`, `width`, `height`
4. Add edges referencing valid node IDs via `fromNode` and `toNode`
5. **Validate**: Parse the JSON to confirm it is valid. Verify all `fromNode`/`toNode` values exist in the nodes array

### 2. Add a Node to an Existing Canvas

1. Read and parse the existing `.canvas` file
2. Generate a unique ID that does not collide with existing node or edge IDs
3. Choose position (`x`, `y`) that avoids overlapping existing nodes (leave 50-100px spacing)
4. Append the new node object to the `nodes` array
5. Optionally add edges connecting the new node to existing nodes
…

Read the whole file at its exact version.

How to install

mdr add spoon94/skill-vault/json-canvas@sha256:97d1ae0728955c42

[![mdr](https://markdownregistry.com/badge/art_gjkiqtscjheedck6.svg)](https://markdownregistry.com/a/art_gjkiqtscjheedck6)

Versions

The registry has recorded 1 version of this file, committed on May 20, 2026.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_gjkiqtscjheedck6
GET https://markdownregistry.com/api/v1/resolve?ref=spoon94/skill-vault/json-canvas
GET https://markdownregistry.com/api/v1/blob/97d1ae0728955c4203922753d5656890e5e4dd371b8306ea11884f9b510f1b85

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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