Update booking
Change dates, hours, people, project or the tentative flag of a booking.
MCP tool resource_guru_write → update_booking
write Confirm
Returns the booking after the change. On a multi-resource booking the change applies to every resource on it. Confirming a tentative booking shows it on the booked people's Dashboard, and with the Approval Workflow on it can come back pending. By default you confirm each call; you can switch that off for this tool.
Parameters
| Name | Type | Description |
|---|---|---|
| booking_id integer required | integer | Booking ID from list_bookings. |
| start_date string | string | New first day, YYYY-MM-DD. |
| end_date string | string | New last day, YYYY-MM-DD. |
| minutes_per_day integer | integer | New minutes per day, 1 to 1440. |
| resource_ids integer[] | integer[] | Replace the booked people or resources. |
| project_id integer | integer | Move the booking to another project. |
| tentative boolean | boolean | False confirms a tentative booking, true makes it tentative. |
| clash_resolution string | string | What to do when a resource has no free time: add_to_waiting_list, book_with_overtime or increase_availability. |
tools/call
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "resource_guru_write",
"arguments": {
"operation": "update_booking",
"arguments": {
"booking_id": 48213021,
"tentative": false
}
}
}
}Example response
{
"content": [
{
"type": "text",
"text": "{ ... same JSON as structuredContent ... }"
}
],
"structuredContent": {
"id": 48213021,
"resource_ids": [
18211,
18214
],
"start_date": "2026-11-02",
"end_date": "2026-11-06",
"minutes_per_day": 240,
"project_id": 703110,
"tentative": false,
"approval_state": "approved",
"waiting": false
},
"isError": false
}