Canvases
Visual artifacts your operators populate with live data — briefs, decks, dashboards. Mustache + frontmatter, refreshed by tool calls.
A canvas is a visual artifact your operators can populate, refresh, and re-render. Think briefs, decks, dashboards, status boards — anything where the layout matters as much as the words.

Under the hood, a canvas is just a markdown template with Mustache tags and frontmatter data sources. An operator fills the data, the canvas re-renders. Same canvas + new data = the next week's report, no manual formatting.
Three tabs
- Installed — canvases your guild has added. Each one is a Mustache template + a data source contract.
- Library — the marketplace. Curated starters (Marketing brief, Sales one-pager, Weekly status) you can install with one click.
- Design — design tokens that style every canvas at once. Brand colors, typography, spacing — change here, every canvas reflects it.
Canvas vs artifact vs file
Same content stored three ways for three audiences:
- Artifact — the canonical record. Versioned. Indexed for search. Listed on the Artifacts page.
- Workspace file — the markdown source lives in your
workspace as a regular file. Edit it in
claude-codeor any editor; the canvas re-renders. - Canvas — the rendered, visual surface you and your team look at.
This three-way mapping (artifact + file + canvas) is intentional: machines read the file, humans look at the canvas, the artifact is the durable identity.
Creating one
Two paths:
- Install from the library — pick a template, customise the data source, your operators start producing canvases that match it.
- Have an operator draft a fresh canvas — describe what you want, the operator generates the template + initial data + ships the rendered canvas to the Installed tab.
Refreshing data
Canvases hold a contract: "this template needs these fields." When the data goes stale (new week, new campaign, new release), an operator calls the refresh — fetch new data, fill the template, save a new version. The visual canvas updates; the underlying file/artifact gets a new version.
What's next
- Artifacts — the storage layer beneath canvases
- Workspaces — where the markdown source lives
- Operators — who fills the data