MPP Server Middleware

Before writing code

Fetch live docs:

1. Fetch https://www.npmjs.com/package/mppx for the current server middleware API and configuration options
2. Web-search mppx server middleware hono express next.js elysia for framework-specific integration patterns
3. Web-search site:github.com stripe-samples machine-payments server for official server sample code
4. Fetch https://docs.stripe.com/payments/machine/mpp for Stripe-side server configuration

Conceptual Architecture

What the Server Middleware Does

The mppx server middleware intercepts requests to protected routes and implements the full HTTP 402 challenge-response flow: