create-canvas-app · jongio/skills

What it does

create-canvas-app turns a one-line prompt into a working Copilot App canvas — an interactive side-panel surface the agent can open and drive. It ships a no-build Preact + htm kit so there’s no bundler to fight, with the pieces a real canvas needs already wired:

Live state over SSE — the canvas and the agent stay in sync in real time.
Durable per-user storage — state survives reloads and sessions.
Primer theming — matches GitHub light/dark out of the box.
Official GitHub Lucide icons — the same icon set the product uses.
Host AI, no API keys — call the Copilot app’s own model from an action with ctx.ai(…) (silent generation) or hand work to the main agent with ctx.askAgent(…).
A generator that stamps a working canvas in one command, plus tests.

When to reach for it

Use it whenever the task is a canvas — dashboards, editors, trackers, boards, or document/preview surfaces. It is not for plain (non-canvas) agent tools or for shipping web apps unrelated to Copilot canvases.

Use it

Once installed, just describe the canvas you want from the Copilot composer:

/create-canvas-app a customized stock ticker

Install

What it does

When to reach for it

Use it