Providers
Explicit capabilities prevent providers from being treated as interchangeable.
| Capability | Stripe | Polar | Link | Mock |
|---|---|---|---|---|
| Hosted checkout | Yes | Yes | Yes | Yes |
| Dynamic checkout | Yes | Yes | No | Yes |
| Multi-item cart | Yes | No | No | Yes |
| Quantity | Yes | No | No | Yes |
| Physical products | Yes | No | Delegated | Yes |
| Subscriptions | Yes | Yes | Delegated | Yes |
| Customer portal | Yes | Yes | No | Yes |
| Webhooks | Yes | Yes | No | Yes |
This public deployment selects Mock. Stripe and Polar adapters are verified with
fixtures; no live payment credentials are configured and no production charge is
possible. Link proves the completely static purchase path.