{"message":"Invoice Generator API","endpoints":{"POST /generate-invoice":"Generate a PDF invoice from provided data","GET /sample-invoice":"Generate a sample PDF invoice for testing","GET /health":"Health check endpoint"},"usage":{"generate-invoice":{"method":"POST","contentType":"application/json","requiredFields":["invoiceNumber","companyName","clientName","items"],"example":{"invoiceNumber":"INV-001","date":"2025-11-02","dueDate":"2025-12-02","companyName":"Your Company","companyAddress":"Your Address","clientName":"Client Name","clientAddress":"Client Address","items":[{"description":"Service Description","quantity":1,"rate":100,"amount":100}],"subtotal":100,"tax":8,"total":108,"currency":"USD","notes":"Optional notes"}}}}