send_invoice

List invoices. Optionally filter by status or search by invoice number/customer name.

Get full details of a specific invoice including line items.

Create a new invoice with line items, optional discount, shipping, adjustment. If the customer does not exist, they will be auto-created. Line item descriptions support multi-line: first line = bold title, lines after \\n = sub-description in lighter text.

Update an existing invoice. Supports status, dates, notes, discount, shipping, adjustment, salesperson, and terms. Recalculates totals automatically.

Get the shareable public link for an invoice.

Delete an invoice permanently.

Email an invoice to the customer with a professional HTML email and PDF attachment. Updates status to Sent if currently Draft.

Create a copy of an existing invoice as a new Draft. Copies line items, template, payment methods. Status = Draft, paidAmount = 0, balanceDue = total.