From Chrome extension

Chartbuddy Hub is the desktop packaging of what already exists in the Google Slides Chrome extension.

Shared engine

Both surfaces run the same charting core:

• Chart types: waterfall, mekko, stacked bar, line, stacked area, pie, scatter, combo, …
• Data model and styling defaults
• Native in-place editing

Hub does not replace the Slides extension — it complements it for AI-first workflows and desktop push/pull.

Agents can also drive the extension as a chart head of Hub over MCP (surface: "ce", refs ce:*): Hub stays the single MCP entry; CE renders and edits in Slides. Internal vision + decisions: docs/ce-as-hub-head.md.

What's different in Hub

Chrome extension	Hub desktop
Lives inside Google Slides	Standalone desktop app
Sheets sync for deck data	MCP bridge for AI clients
OAuth to Google (in-browser tab)	System browser + localhost callback (PKCE)
SSO (WorkOS, work-email form)	Same WorkOS path; loopback + PKCE token exchange
Google account required	Email/password sign-in for users without Google or org SSO
Deck-native editing	Push/pull to multiple surfaces

Migration mental model

If you already use Chartbuddy in Slides, think of Hub as:

• The place AI agents send charts before they land in a deck
• The editor for charts that arrive as PNGs from chat or other tools
• The same chart quality, without opening a presentation

Placeholder

Parity matrix (feature-by-feature) and shared keyboard shortcuts will be added as Hub ships.