json-canvas SKILL.md skillC
json-canvas from mancerayder42/jarvis-os is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mancerayder42/jarvis-os/json-canvas@git:20260905.fd1ce5aPins git:20260905.fd1ce5a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- C, 14 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mancerayder42/jarvis-os
- Path
optional-skills/json-canvas/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260905.fd1ce5a, committed Sep 5, 2026
- Size
- 7,834 bytes
- Repository stars
- 5
- License
- MIT
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
<!--
Vendored from kepano/obsidian-skills (github.com/kepano/obsidian-skills),
skills/json-canvas/, by Steph Ango (@kepano). MIT License. Copied
byte-for-byte from the upstream source — no modifications.
-->
---
name: json-canvas
description: 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.
---
# 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`
…Read the whole file at its exact version.
How to install
mdr add mancerayder42/jarvis-os/json-canvas@sha256:0b288cea5ea6b324The line at the top of this page pins the label git:20260905.fd1ce5a, 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.
[](https://markdownregistry.com/a/art_r5ztee4todpp6ql2)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 5, 2026.
Audit of the latest version
- fail: Frontmatter block present
- fail: Frontmatter declares a name
- fail: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7834 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
mancerayder42/jarvis-os · 5 stars · license MIT · pushed 2026-10-01 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_r5ztee4todpp6ql2 GET https://markdownregistry.com/api/v1/resolve?ref=mancerayder42/jarvis-os/json-canvas GET https://markdownregistry.com/api/v1/blob/0b288cea5ea6b324374e0adceda3aded3a282031d3641b4fd08b4ffa8fbfcb6c
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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