Sync My Cycle

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io.github.GoodTurnStudio/syncmycyclev1.3.0

Your likely menstrual cycle phase today and this week, with food and workout ideas.

Health & Science

Source Website Registry entry

Try it

Call this server's tools from your browser. Nothing to install.

https://goodturn-mcp.pages.dev/syncmycycle/mcp

Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.

Tool list from our last check. Connect live to refresh it.

get_todays_phase

Today's cycle phase, with workout and food ideas. For when the user asks what phase they are in, what workout or food suits them today, or why their energy is up or down, for example "what phase am I in, my last period started September 12th" or "what should I train today?". Needs the first day of their last period. Not for getting pregnant, fertile days, ovulation timing, contraception or pregnancy: this is general wellbeing only, not for pregnancy planning or contraception, and a doctor or pharmacist is the right person for those. When `period_may_be_late` is true the say line says the period may be late and suggests checking with a doctor.

last_periodstring, required

First day of the user's most recent period, YYYY-MM-DD. Must be within the last 120 days.

tzstring

The user's IANA time zone, for example Europe/London or America/Chicago, so today is the user's today. Optional: country is enough in most places.

datestring

Day to ask about, YYYY-MM-DD, a real calendar day. Default today where the user is: from tz, else country, else the request, else UTC.

dietstring

Comma separated: vegetarian, vegan, pescatarian, halal. Food ideas are filtered to suit.

countrystring

Two-letter country code (UK is read as GB). Sets the kit links (US, GB and IE get local Amazon links) and the time zone for today. Default from the request.

cycle_lengthinteger

Usual days from one period start to the next, 20 to 45. Default 28.

period_lengthinteger

Usual days of bleeding, 2 to 10. Default 5.

last_period_startstring

Older name for last_period, kept for existing callers; last_period is the current name.

Try it

Call this server's tools from your browser. Nothing to install.

https://goodturn-mcp.pages.dev/syncmycycle/mcp

Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.

Tool list from our last check. Connect live to refresh it.

get_todays_phase

last_periodstring, required

First day of the user's most recent period, YYYY-MM-DD. Must be within the last 120 days.

tzstring

The user's IANA time zone, for example Europe/London or America/Chicago, so today is the user's today. Optional: country is enough in most places.

datestring

Day to ask about, YYYY-MM-DD, a real calendar day. Default today where the user is: from tz, else country, else the request, else UTC.

dietstring

Comma separated: vegetarian, vegan, pescatarian, halal. Food ideas are filtered to suit.

countrystring

Two-letter country code (UK is read as GB). Sets the kit links (US, GB and IE get local Amazon links) and the time zone for today. Default from the request.

cycle_lengthinteger

Usual days from one period start to the next, 20 to 45. Default 28.

period_lengthinteger

Usual days of bleeding, 2 to 10. Default 5.

last_period_startstring

Older name for last_period, kept for existing callers; last_period is the current name.

Tools (3)

get_todays_phase

read-only

Argument	Type	Description
tz	string	The user's IANA time zone, for example Europe/London or America/Chicago, so today is the user's today. Optional: country is enough in most places.
date	string	Day to ask about, YYYY-MM-DD, a real calendar day. Default today where the user is: from tz, else country, else the request, else UTC.
diet	string	Comma separated: vegetarian, vegan, pescatarian, halal. Food ideas are filtered to suit.
country	string	Two-letter country code (UK is read as GB). Sets the kit links (US, GB and IE get local Amazon links) and the time zone for today. Default from the request.
last_period*	string	First day of the user's most recent period, YYYY-MM-DD. Must be within the last 120 days.
cycle_length	integer	Usual days from one period start to the next, 20 to 45. Default 28.
period_length	integer	Usual days of bleeding, 2 to 10. Default 5.
last_period_start	string	Older name for last_period, kept for existing callers; last_period is the current name.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "last_period"
  ],
  "properties": {
    "tz": {
      "type": "string",
      "description": "The user's IANA time zone, for example Europe/London or America/Chicago, so today is the user's today. Optional: country is enough in most places."
    },
    "date": {
      "type": "string",
      "format": "date",
      "description": "Day to ask about, YYYY-MM-DD, a real calendar day. Default today where the user is: from tz, else country, else the request, else UTC."
    },
    "diet": {
      "type": "string",
      "description": "Comma separated: vegetarian, vegan, pescatarian, halal. Food ideas are filtered to suit."
    },
    "country": {
      "type": "string",
      "description": "Two-letter country code (UK is read as GB). Sets the kit links (US, GB and IE get local Amazon links) and the time zone for today. Default from the request."
    },
    "last_period": {
      "type": "string",
      "format": "date",
      "description": "First day of the user's most recent period, YYYY-MM-DD. Must be within the last 120 days."
    },
    "cycle_length": {
      "type": "integer",
      "maximum": 45,
      "minimum": 20,
      "description": "Usual days from one period start to the next, 20 to 45. Default 28."
    },
    "period_length": {
      "type": "integer",
      "maximum": 10,
      "minimum": 2,
      "description": "Usual days of bleeding, 2 to 10. Default 5."
    },
    "last_period_start": {
      "type": "string",
      "format": "date",
      "description": "Older name for last_period, kept for existing callers; last_period is the current name."
    }
  },
  "additionalProperties": false
}

get_week_ahead

The days ahead by phase. For when the user wants to plan training or meals for the week, for example "plan my training this week around my cycle". Returns each day's likely phase, workout focus, intensity and food focus. Not for getting pregnant, fertile days, ovulation timing, contraception or pregnancy: this is general wellbeing only, not for pregnancy planning or contraception, and it is not a fertility calendar. When `period_may_be_late` is true, `days` is empty and the say line suggests checking with a doctor.

read-only

Argument	Type	Description
tz	string	The user's IANA time zone, for example Europe/London or America/Chicago, so today is the user's today. Optional: country is enough in most places.
date	string	First day of the plan, YYYY-MM-DD, a real calendar day. Default today where the user is: from tz, else country, else the request, else UTC.
days	integer	How many days, a whole number from 1 to 35. Default 7.
diet	string	Accepted for symmetry with get_todays_phase; the week view has no food list, so it has no effect here.
country	string	Two-letter country code (UK is read as GB), used for the time zone of today.
last_period*	string	First day of the user's most recent period, YYYY-MM-DD. Must be within the last 120 days.

list_phases

What each phase usually feels like, with workout and food ideas. For general questions about cycle syncing that need no dates, for example "what should I eat in my luteal phase?". Not for conception, fertile days, contraception or pregnancy: general wellbeing only, not for pregnancy planning or contraception.

read-only

No arguments.

Input schema (JSON)

{
  "type": "object",
  "required": [],
  "properties": {},
  "additionalProperties": false
}