Create or register a canvas extension in the awesome-copilot repository. Use when asked to scaffold a new canvas extension, create its plugin.json, add a reusable extension to one or more plugins, or migrate extension metadata. Extensions are reusable source under extensions/; shippable plugin manifests belong under plugins/.
Install
npx skills add github/awesome-copilot --skill create-canvas-extensionnpx skills add github/awesome-copilot --skill create-canvas-extension -a claude-code -gnpx skills add github/awesome-copilot --skill create-canvas-extension -a codex -ggemini skills install https://github.com/github/awesome-copilot.git --path .github/skills/create-canvas-extensiongh skill install github/awesome-copilot create-canvas-extensiongit clone --depth 1 https://github.com/github/awesome-copilot /tmp/github__awesome-copilot
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/github__awesome-copilot/.github/skills/create-canvas-extension ~/.claude/skills/create-canvas-extension # Claude Code
cp -R /tmp/github__awesome-copilot/.github/skills/create-canvas-extension ~/.agents/skills/create-canvas-extension # Codex, Cursor, Gemini CLI, Copilot, OpenCode