Author the React + Quill implementation of a PostHog canvas: the single-component contract, the allowed imports, Quill (PostHog's design system) component and composition rules, theme-aware design tokens, loading skeletons, and the in-canvas date picker.
Install
npx skills add PostHog/ai-plugin --skill building-react-quill-canvasesnpx skills add PostHog/ai-plugin --skill building-react-quill-canvases -a claude-code -gnpx skills add PostHog/ai-plugin --skill building-react-quill-canvases -a codex -ggemini skills install https://github.com/PostHog/ai-plugin.git --path skills/building-react-quill-canvasesgh skill install PostHog/ai-plugin building-react-quill-canvasesgit clone --depth 1 https://github.com/PostHog/ai-plugin /tmp/PostHog__ai-plugin
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/PostHog__ai-plugin/skills/building-react-quill-canvases ~/.claude/skills/building-react-quill-canvases # Claude Code
cp -R /tmp/PostHog__ai-plugin/skills/building-react-quill-canvases ~/.agents/skills/building-react-quill-canvases # Codex, Cursor, Gemini CLI, Copilot, OpenCode