Send a payment reminder
Emails the customer that an invoice is still open and attaches the invoice again.
MCP tool snelstart_write → send_invoice_reminder
write Confirm
Does what the Herinnering button on an open invoice does, from the inStap package. It works for a regular invoice only, not for an e-invoice, and the call returns an error for an invoice that is already paid. The customer receives the email. By default you confirm each call; you can switch that off for this tool.
Parameters
| Name | Type | Description |
|---|---|---|
| invoice_id string required | string | Sales invoice ID from list_sales_invoices or create_sales_invoice. |
tools/call
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "snelstart_write",
"arguments": {
"operation": "send_invoice_reminder",
"arguments": {
"invoice_id": "inv_2026_0388"
}
}
}
}Example response
{
"content": [
{
"type": "text",
"text": "{ ... same JSON as structuredContent ... }"
}
],
"structuredContent": {
"invoice_id": "inv_2026_0388",
"number": "2026-0388",
"reminder_sent_to": "ap@bakker.example",
"sent_at": "2026-10-14T09:12:00+02:00"
},
"isError": false
}