Bundles
One purchase that unlocks several of your tools.
A bundle is registered like a tool — New, kind Bundle, a name, the tools it holds — and sold like one: its own checkout page, prices and customers. Holding the bundle is holding each tool in it. A licence, subscription or grant on the bundle entitles the buyer to every tool it names, in the popup and in the API.
A licence or subscription on the bundle unlocks each tool whole: every feature that any plan of the tool unlocks, whatever the bundle's plan is called. A feature that no plan of the tool unlocks stays refused, as it is to every buyer. See Access and features.
The extensions do not change. Each asks with its own tool id; the Wall resolves the bundle.
On your Stripe account the bundle is a Product carrying the Entitlement Features of its tools; each tool is a Product with its own Feature. A bundle cannot hold another bundle or a tool from another workspace.