Canvas

OrganizationPopular

markdown-viewer

canvas

Create spatial diagrams with free-positioned nodes using JSON format. Best for concept maps, knowledge graphs, and planning boards requiring precise x/y coordinate control.

Overview

Publisher	markdown-viewer
Repository	`skills`
Skill name	`canvas`
Stars	3.3K
Forks	190
Bundled files	1
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
1 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by markdown-viewer on GitHub. Read the source before you install it.

Installation

Install the Canvas AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/markdown-viewer/skills.git /tmp/skills
mkdir -p .claude/skills
cp -r /tmp/skills/canvas .claude/skills/canvas

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Canvas in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Canvas on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Canvas is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

JSON Canvas Visualizer

Quick Start: Define nodes with id, type, x, y, width, height → Plan layout on 100px grid → Connect edges with fromNode/toNode → Apply colors (1-6) → Wrap in ```canvas fence. Origin (0,0) at top-left, X right, Y down. Obsidian Canvas compatible.

Critical Syntax Rules

1. Structure Format

canvas
{
  "nodes": [
    {"id": "n1", "type": "text", "text": "Node 1", "x": 0, "y": 0, "width": 120, "height": 50}
  ],
  "edges": []
}

2. Node Types

Type	Required Fields	Purpose
`text`	`text`	Display custom text content
`file`	`file`	Reference external files
`link`	`url`	External URL references
`group`	`label`	Visual container for grouping

3. Required Node Attributes

All nodes require: id, type, x, y, width, height

4. Color Presets

Value	Color
`"1"`	Red
`"2"`	Orange
`"3"`	Yellow
`"4"`	Green
`"5"`	Cyan
`"6"`	Purple

5. Edge Connections

json
{
  "id": "e1",
  "fromNode": "n1",
  "fromSide": "right",
  "toNode": "n2", 
  "toSide": "left",
  "toEnd": "arrow"
}

6. Coordinate System

Origin (0,0) at top-left
X increases to the right
Y increases downward

7. Node Sizing

Consider text content when setting node dimensions
Multi-line text requires more height to display all lines
Long words require more width to avoid overflow

Common Pitfalls

Issue	Solution
Nodes overlapping	Increase spacing (100+ px)
Edges not visible	Verify `fromNode`/`toNode` match node IDs
Invalid JSON	Check quotes and commas
IDs invalid	Use only a-z, A-Z, 0-9, -, _

Output Format

markdown
```canvas
{
  "nodes": [...],
  "edges": [...]
}
```

Related Files

For detailed syntax and advanced features, refer to references below:

syntax.md — Complete attribute reference: node types, edge properties, group styling, and advanced examples

Resources

JSON Canvas Specification

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

references/syntax.md8 KB

Frequently asked questions

What does the Canvas AI skill do?

Create spatial diagrams with free-positioned nodes using JSON format. Best for concept maps, knowledge graphs, and planning boards requiring precise x/y coordinate control.

Why use Canvas on TypingMind?

Because you install it once and use it with any model. Canvas is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Canvas in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/markdown-viewer/skills/tree/main/canvas. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Canvas?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Canvas?

As many as you like. As long as a model supports skills, you can use Canvas with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Canvas AI skill free?

It is published on GitHub by markdown-viewer. Check the repository for licensing terms. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

JSON Canvas Visualizer

Critical Syntax Rules

1. Structure Format

2. Node Types

3. Required Node Attributes

4. Color Presets

5. Edge Connections

6. Coordinate System

7. Node Sizing

Common Pitfalls

Output Format

Related Files

Resources

Bundled files

Frequently asked questions

Related AI Skills

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