canvas-generative SKILL.md skillA
canvas-generative from athevon/genjutsu is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add athevon/genjutsu/canvas-generative@git:20260928.a0f6e09Pins git:20260928.a0f6e09 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- athevon/genjutsu
- Path
skills/_jutsu/canvas-generative/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260928.a0f6e09, committed Sep 28, 2026
- First version recorded
- Apr 26, 2026
- Size
- 8,533 bytes
- Repository stars
- 718
- License
- a license file GitHub does not identify
Algorithmic and generative art with Canvas 2D - particles, flow fields, noise, fractals, L-systems.
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
> **Version-sensitive.** Every API name, SDK gate and browser-support claim below was
> verified on **2026-09-08** against primary sources. What against, and when, is in
> `_jutsu/VERSIONS.md`. If that date is old, re-verify before acting on a version number.
# Canvas Generative
> Algorithmic and generative art with Canvas 2D.
> Concise rules here. Deep-dive and reference implementations in `references/`.
---
## Canvas 2D Setup
### DPR-Aware Sizing
Every canvas must be sharp on Retina/HiDPI displays. Set the buffer size to the physical pixel size, scale down with CSS.
```js
function setupCanvas(canvas, width, height) {
const dpr = window.devicePixelRatio || 1;
canvas.width = width * dpr;
canvas.height = height * dpr;
canvas.style.width = `${width}px`;
canvas.style.height = `${height}px`;
const ctx = canvas.getContext('2d');
ctx.scale(dpr, dpr);
return ctx;
}
```
### Resize Handler
```js
function handleResize(canvas, ctx, draw) {
const ro = new ResizeObserver(([entry]) => {
const { width, height } = entry.contentRect;
const dpr = window.devicePixelRatio || 1;
canvas.width = width * dpr;
canvas.height = height * dpr;
…Read the whole file at its exact version.
How to install
mdr add athevon/genjutsu/canvas-generative@sha256:ed1c384706688bffThe line at the top of this page pins the label git:20260928.a0f6e09, 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_o5mj62bsh6zqjq3y)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Apr 26, 2026 and Sep 28, 2026, about one every 78 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260928.a0f6e09 latest | 2026-09-28 | a0f6e09 | 8,533 B | A | view · diff |
| git:20260908.dae2c1e | 2026-09-08 | dae2c1e | 8,506 B | A | view · diff |
| git:20260426.0c6ea76 | 2026-04-26 | 0c6ea76 | 8,245 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8533 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
athevon/genjutsu · 718 stars · license a license file GitHub does not identify · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_o5mj62bsh6zqjq3y GET https://markdownregistry.com/api/v1/resolve?ref=athevon/genjutsu/canvas-generative GET https://markdownregistry.com/api/v1/blob/ed1c384706688bff70ddc165ef8ffe2aa6ddbc9dac06ff9c3bccb44d6f522e21
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.