Independent product · Early access
PayKit
Billing toolkit for AI apps, in early access.
The project at a glance
- The problem
- Apps with credits and usage billing need to coordinate Stripe payments, webhooks and credit accounting.
- My contribution
- Solo-built developer product: Stripe Checkout integration, webhook processing, usage metering, PostgreSQL credits and React integration surface.
- Work delivered
- Public source code and project landing page. The project demonstrates billing API design and TypeScript integration.
Context and scope: A landing page does not prove production adoption; no customer or revenue metrics are claimed.
What can be verified
The public page offers early access (25 Oct 2026). It does not establish paying customers or production adoption.
Access last checked:
Explore technical decisions and constraints
Technical approach
- Constraints
- Avoid inconsistent balances when credits are deducted concurrently; keep integration accessible to other developers.
- Technical choices
- Atomic PostgreSQL credit operations, separation of webhooks from client code, a React SDK and script-based integration.
Stack
TypeScriptStripePostgresReactNext.js
Project visuals
These visuals introduce the project. On their own, they do not prove a payment, private feature or full user journey has been tested.
Working on a similar problem?
An interface to improve, an API to connect or an application to extend? Describe the need and constraints; you speak directly with me.