Stripe recently launched an entitlements API [1] that is meant to aid in provisioning and deprovisioning customers, but product integration is not provided (You create subscribe/unsubscribe webhooks and update the entitlements in your own data model, after which you need to build the APIs and functionality to use them). As you alluded, this is actually complementary to Planship, and integration between Stripe features/entitlements and Planship levers/entitlements is something we're considering pending customer feedback.

Thanks for the question!

[1] https://docs.stripe.com/billing/entitlements