Principle:Helicone Helicone Plan Upgrade
| Knowledge Sources | |
|---|---|
| Domains | Subscription Management, Billing, User Experience |
| Last Updated | 2026-02-14 06:32 GMT |
Overview
Plan Upgrade is the workflow for transitioning a user's subscription from one tier to a higher tier through a payment provider's checkout or billing portal.
Description
When users outgrow their current plan's limits or need access to premium features, the platform must provide a seamless upgrade path. The plan upgrade flow involves: determining the user's current plan, presenting available upgrade options, initiating a checkout session with the payment provider (e.g., Stripe), handling the redirect to the provider's hosted payment page, processing the webhook callback on successful payment, and updating the user's tier in the platform's database.
The upgrade hook encapsulates this entire flow behind a simple API: the frontend calls a single function with the target plan, and the hook handles session creation, redirect management, and error handling. Downgrade and cancellation flows follow similar patterns but with additional safeguards (proration calculations, feature access grace periods).
Usage
Use the plan upgrade pattern when:
- Users need to self-service upgrade their subscription tier.
- The checkout flow must be delegated to an external payment provider.
- Upgrade state must be tracked across the redirect-based payment flow.
- The system must handle edge cases like failed payments or abandoned checkouts.
Theoretical Basis
The plan upgrade flow implements a Saga pattern -- a sequence of local transactions (create session, process payment, update tier) coordinated without distributed locks. If any step fails, compensating actions restore consistency. The redirect-based checkout follows the Redirect-After-Post pattern extended to external services. The hook abstraction applies the Facade pattern, presenting a simple interface over the complex multi-step payment and provisioning workflow.