confirmMenstrualPeriodStart
write
POSTs `/periodichealth-service/menstrualcycle/{periodStartDate}` directly, NOT the `dayview`/`calendar`/`lastconfirmed`/`summary` sub-paths
confirmMenstrualPeriodStart(periodStartDate, periodLength, cycleLength, options?)| Parameter | Type | Optional | Description |
|---|---|---|---|
| periodStartDate | string | no | Calendar date, YYYY-MM-DD (UTC) |
| periodLength | number | no | |
| cycleLength | number | no | |
| options | object | yes |
In Claude this is the confirm_menstrual_period_start tool.