external-purchases
Installation
SKILL.md
External Purchases (US Web Checkout)
On the US storefront, apps may link out to a web checkout for digital goods using the StoreKit External Purchase Link entitlement — and as of mid-2026, court orders have Apple's commission on those purchases at 0%, with the fee case still moving through district court. This is the largest indie revenue unlock of the era, and it is reversible by a ruling — so the engineering rule is: ship it now, architect it so a commission can be flipped on later.
Verify current state before relying on this: the entitlement terms, the commission rate, and the litigation status have each changed more than once. Treat every number here as "true as of 2026-07, re-check."
When This Skill Activates
- "Add a web checkout / Stripe / external purchase link" for digital goods
- Deciding IAP vs web checkout for a US-heavy revenue base
- The store-growth audit flags P8.4
- Reviewing an app whose external links might be non-compliant (wrong storefront, no entitlement)