Claude Code mod
canvas
Gives Claude a screen to draw on: SVG diagrams and Markdown reports in a Canvas pane with history.
Install
/plugin marketplace add mako-code/gobworks
/plugin install canvas@gobworksMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: runs processes, writes files, drives Claude, writes the clipboard, reads env vars, reads mod state, draws
- Sees
- mcp__canvas__show_svg calls, mcp__canvas__show_markdown calls
- Draws in
Pane- Hooks
session.starttool.callcommand.runui.render
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- mako-code/gobworks
- Folder
mods/abilities/canvas- Marketplace
gobworks- Author
- mako-code
- License
- MIT
- Last updated
- 4 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is canvas?
Gives Claude a screen to draw on: SVG diagrams and Markdown reports in a Canvas pane with history. It is a mod for Claude Code, from mako-code/gobworks on GitHub.
What can the canvas mod access?
Its widest reach is "writes or runs" (runs processes, writes files, drives Claude, writes the clipboard, reads env vars, reads mod state, draws). It sees mcp__canvas__show_svg calls, mcp__canvas__show_markdown calls. It draws in Pane. Like any mod, it runs with your permissions.
How do I install canvas?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add mako-code/gobworks and then /plugin install canvas@gobworks.
Is canvas popular?
mako-code/gobworks has 2 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 4 October 2026.
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