Can I vibe code Billie?

Build a Node.js/TypeScript backend service and React checkout widget for a custom B2B deferred payment option ('Pay by Invoice'). 1. Data Model: Store B2B accounts with fields for company_name, vat_id, credit_limit, current_balance, status (approved, pending, rejected), and payment_terms_days (e.g. 30). Store Invoices with fields for order_id, buyer_id, amount, due_date, status (unpaid, paid, overdue). 2. Checkout Workflow: During checkout, expose a 'Pay on Account' payment option. Validate the buyer's VAT ID against the European Commission VIES REST API. Check if requested order amount + current_balance <= credit_limit. If valid, set order payment_status to 'pending_invoice', increment current_balance, and create an invoice record. 3. Dashboard & Operations: Provide an internal admin screen where staff can manually adjust company credit limits, upload risk notes, and mark invoices as paid when bank transfer deposits clear. Send automated email reminders via Postmark at 7 days before due date, on due date, and 7 days past due. 4. Out of Scope: Do not attempt real-time automated credit underwriting, debt collection, or bank cash advance features. Assume the merchant accepts default risk.

$ each button prefixes agent-specific run instructions · build your own product, never copy proprietary code, trademarks or designs