/chase-overdue-invoices

1. 01 Call list_invoices with status="OVERDUE" to find unpaid invoices past their due date.
2. 02 For each, call get_invoice to retrieve the invoice number, total, and customer details.
3. 03 Confirm with the user before sending — show a preview list (customer name, amount, days overdue).
4. 04 For each, call send_whatsapp_message (or send_message for email/SMS) with a payment-reminder template. Include the invoice number and amount.
5. 05 Summarise: how many reminders sent, how many failed (e.g. customer opted out), total outstanding amount across all chased invoices.

• list_invoices
• get_invoice
• send_whatsapp_message

Every tool ships with MCP annotations (title, readOnlyHint, destructiveHint, openWorldHint, idempotentHint). Clients can gate destructive calls before invoking. Full catalog: /server-card.json.

• /bill-customer

  Create an invoice with line items and send it to the customer.

  Read playbook
• /record-payment

  Record a manual payment against an existing invoice.

  Read playbook
• /void-invoice

  Void a non-paid invoice (destructive — cannot be undone).

  Read playbook