Schedule message
Schedule a text to one contact for a date and time.
MCP tool simpletexting_write → schedule_message
write Confirm
Does what the Clock icon in the Inbox does: the text goes to one contact at the time you give. Returns the scheduled message id. SimpleTexting does not let you edit a scheduled message, so a change means deleting it in the app (three dots, delete) and scheduling a new one. By default you confirm each call; you can switch that off for this tool.
Parameters
| Name | Type | Description |
|---|---|---|
| contact_phone string required | string | Phone number of the contact, with country code. |
| text string required | string | Message text. |
| send_at datetime required | datetime | When to send, ISO 8601 with offset. |
tools/call
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "simpletexting_write",
"arguments": {
"operation": "schedule_message",
"arguments": {
"contact_phone": "contact phone",
"text": "text",
"send_at": "2026-10-01T09:00:00Z"
}
}
}
}Example response
{
"content": [
{
"type": "text",
"text": "{ ... same JSON as structuredContent ... }"
}
],
"structuredContent": {
"scheduled_message_id": "sm_2e90b1",
"contact_phone": "+12125550163",
"send_at": "2026-10-27T08:00:00-04:00",
"status": "scheduled"
},
"isError": false
}