1. Install dependencies: `npm install mercadopago zod`.
2. Set up environment variables for MercadoPago access token and application URL.
3. Implement database helper functions for creating, updating, and retrieving purchase information.
4. Create a MercadoPago client for interacting with the MercadoPago API.
5. Implement the checkout API route to create a preference and redirect the user to MercadoPago.
6. Implement the webhook handler to update the purchase status based on MercadoPago notifications.
7. Create a purchase status API to retrieve the status of a purchase.
SynapticSkills