{
  "endpoints": {
    "DELETE /invoices/<invoice_no>": "Delete invoice",
    "GET /invoices": "Get all invoices",
    "GET /invoices/<invoice_no>": "Get specific invoice",
    "POST /invoices": "Create new invoice",
    "POST /upload-pdf": "Upload PDF and extract invoice data (Generic)",
    "PUT /invoices/<invoice_no>": "Update invoice"
  },
  "message": "Generic Invoice Management API"
}