canvas-design

canvas-design is a skill for Claude Code, Codex from Pixel-Process-UG/superkit-agents. It costs 71 tokens per session (2,373 once invoked), scanned A, original, MIT.

A guide for creating graphics in web pages with Canvas or SVG, including charts, data visualizations, generative art, animation, and interactive visuals.

In plain words
What is it for?
Use it when building charts, diagrams, animated graphics, custom drawings, or interactive visual elements with tools such as D3.js.
Why use it?
It helps choose a suitable drawing method while considering accessibility, performance, output type, and the amount of data shown.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/pixel-process-ug/superkit-agents/canvas-design
Any agent
npx skills add Pixel-Process-UG/superkit-agents --skill canvas-design
Clone the repo
git clone --depth 1 https://github.com/Pixel-Process-UG/superkit-agents

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for canvas-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/pixel-process-ug/superkit-agents/canvas-design.svg)](https://agentmods.dev/skills/pixel-process-ug/superkit-agents/canvas-design)
Your own site
<a href="https://agentmods.dev/skills/pixel-process-ug/superkit-agents/canvas-design"><img src="https://agentmods.dev/badge/skills/pixel-process-ug/superkit-agents/canvas-design.svg" alt="Measured on agentmods" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,373 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00071 $0.02373
Opus 5 $0.00036 $0.01187
Sonnet 5 $0.00014 $0.00475
Haiku 4.5 $0.00007 $0.00237

Measured 5d ago against content hash de7330317a48, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

canvas-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

templates/skills/canvas-design/SKILL.md · 301 lines

How it starts

The opening of the file, as written. The whole thing — 301 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Canvas Design

Overview

Create performant, accessible, and visually compelling graphics using HTML Canvas 2D, SVG, and data visualization libraries. This skill covers everything from low-level pixel manipulation to high-level chart composition with D3.js, including generative art, interactive graphics, and animation.

Phase 1: Requirements Analysis

  1. Determine output type (static, animated, interactive, data-driven)
  2. Choose rendering technology (Canvas 2D, SVG, WebGL, hybrid)
  3. Identify data sources and update frequency
  4. Define accessibility requirements for the visualization
  5. Set performance budget (frame rate, element count)

STOP — Present technology recommendation with rationale before implementation.

Technology Selection Decision Table

Requirement Canvas 2D SVG WebGL
< 1000 elements Maybe Yes No
> 10,000 elements Yes No Yes
DOM event handling needed No Yes No
Pixel manipulation Yes No Yes
Text-heavy visualization No Yes No
3D rendering No No Yes
Print quality No Yes No
Animation-heavy Yes Maybe Yes
Accessibility critical No Yes No
SEO-relevant content No Yes No

When to Use Each Technology

Use Case Recommended Why
Dashboard charts (< 500 data points) SVG + D3.js DOM events, accessibility, print
Real-time data stream (1000+ points) Canvas 2D Performance at scale
Interactive map with tooltips SVG Hover events, accessible
Particle system / generative art Canvas 2D Pixel-level control, performance
3D data visualization WebGL (Three.js) GPU acceleration
Infographic for blog post SVG Scalable, accessible, printable
Game or simulation Canvas 2D or WebGL Frame rate, pixel control

Phase 2: Implementation

  1. Set up responsive canvas/SVG container
  2. Implement rendering pipeline (clear, update, draw)
  3. Add interaction handlers (hover, click, drag, zoom)
  4. Optimize render loop (requestAnimationFrame, dirty rectangles)
  5. Add accessibility layer (ARIA, screen reader descriptions)

Read the full file on GitHub · 301 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 301 lines · 71 tokens per session scan A de7330317a48

Subscribe to this mod's changes

canvas-design is a skill published in the GitHub repository Pixel-Process-UG/superkit-agents (1 stars, last pushed 5mo ago), licensed MIT. It adds 71 tokens to every session and 2,373 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

test-driven-development

Drives development with tests. Use when implementing any logic, fixing any bug, or changing any behavior. Use when you need to prove that code works, when a bug report arrives, or when you're about to modify existing functionality.

addyosmani/agent-skills · 50 tokens

documentation-and-adrs

Records decisions and documentation. Use when making architectural decisions, changing public APIs, shipping features, or when you need to record context that future engineers and agents will need to understand the codebase.

addyosmani/agent-skills · 43 tokens

idea-refine

Refines raw ideas into sharp, actionable concepts through structured divergent and convergent thinking. Use when an idea is still vague, when you need to stress-test assumptions before committing to a plan, or when you want to expand options before converging on one. Triggers on "ideate", "refine this idea", or…

addyosmani/agent-skills · 75 tokens

chinese-git-workflow

国内 Git 平台配置参考——Gitee、Coding.net、极狐 GitLab、CNB 的 SSH/HTTPS/凭据/CI 接入差异与镜像同步配置。仅在用户显式 /chinese-git-workflow 时调用,不要根据上下文自动触发。.

jnMetaCode/superpowers-zh · 69 tokens

chinese-documentation

中文文档排版参考——中英文空格、全半角标点、术语保留、链接格式、中文文案排版指北约定。仅在用户显式 /chinese-documentation 时调用,不要根据上下文自动触发。.

jnMetaCode/superpowers-zh · 62 tokens

skillshare-implement-feature

Implement a feature from a spec file or description using TDD workflow. Use this skill whenever the user asks to: add a new CLI command, implement a feature from a spec, build new functionality, add a flag, create a new internal package, or write Go code for skillshare. This skill enforces test-first development…

runkids/skillshare · 114 tokens