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Check availability, book meetings and find group times — without sharing your calendar.

Communication

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https://sync.lucie.network/api/mcp

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

book_group_meeting

Confirm a group meeting at a specific time across several Lucie hosts (by @handle), creating ONE shared Google Calendar event with everyone invited. YOU (the connector's owner) are the organizer and host the event on your calendar — no organizer handle needed. This is a real write: it re-verifies every participant (you included) is free at that instant and refuses if anyone isn't — so it never double-books. Always call find_group_times first and copy an exact common-slot start. Before calling, confirm the time (in each person's zone), the participants, the title, and the reason. Requires you to be on Sync Pro (or a Lucie Membership) via your personal connector; everyone must have a live booking page.

titlestring, required

The meeting title, e.g. "Q3 planning sync".

reasonstring, required

A short agenda/purpose, shared with everyone on the invite.

startAtstring, required

The exact ISO-8601 `start` copied verbatim from a find_group_times common slot (absolute UTC instant). Do NOT construct it from a wall-clock time.

durationMinutesinteger, required

Meeting length in minutes. Must be one the organizer offers.

participantHandlesarray, required

The other participants' @handles, e.g. ["@lucie", "@taylor"]. Each must have a live Lucie booking page. Leading @ optional.

This tool isn't marked read-only, so it may change something on the server or in an account you connected.

I understand, run it anyway

Try it

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

https://sync.lucie.network/api/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.

book_group_meeting

titlestring, required

The meeting title, e.g. "Q3 planning sync".

reasonstring, required

A short agenda/purpose, shared with everyone on the invite.

startAtstring, required

The exact ISO-8601 `start` copied verbatim from a find_group_times common slot (absolute UTC instant). Do NOT construct it from a wall-clock time.

durationMinutesinteger, required

Meeting length in minutes. Must be one the organizer offers.

participantHandlesarray, required

The other participants' @handles, e.g. ["@lucie", "@taylor"]. Each must have a live Lucie booking page. Leading @ optional.

This tool isn't marked read-only, so it may change something on the server or in an account you connected.

I understand, run it anyway

Tools (5)

book_group_meeting

Argument	Type	Description
title*	string	The meeting title, e.g. "Q3 planning sync".
reason*	string	A short agenda/purpose, shared with everyone on the invite.
startAt*	string	The exact ISO-8601 `start` copied verbatim from a find_group_times common slot (absolute UTC instant). Do NOT construct it from a wall-clock time.
durationMinutes*	integer	Meeting length in minutes. Must be one the organizer offers.
participantHandles*	array	The other participants' @handles, e.g. ["@lucie", "@taylor"]. Each must have a live Lucie booking page. Leading @ optional.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "participantHandles",
    "startAt",
    "durationMinutes",
    "title",
    "reason"
  ],
  "properties": {
    "title": {
      "type": "string",
      "minLength": 1,
      "description": "The meeting title, e.g. \"Q3 planning sync\"."
    },
    "reason": {
      "type": "string",
      "minLength": 1,
      "description": "A short agenda/purpose, shared with everyone on the invite."
    },
    "startAt": {
      "type": "string",
      "description": "The exact ISO-8601 `start` copied verbatim from a find_group_times common slot (absolute UTC instant). Do NOT construct it from a wall-clock time."
    },
    "durationMinutes": {
      "type": "integer",
      "description": "Meeting length in minutes. Must be one the organizer offers.",
      "exclusiveMinimum": 0
    },
    "participantHandles": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 8,
      "minItems": 1,
      "description": "The other participants' @handles, e.g. [\"@lucie\", \"@taylor\"]. Each must have a live Lucie booking page. Leading @ optional."
    }
  },
  "additionalProperties": false
}

book_meeting

Book a confirmed meeting on a Lucie Sync host's calendar at a specific start time. This is a real write: it creates a calendar event and emails both the host and the booker. Always call check_availability first and use one of the open slots it returns. Before calling, (1) show the booker the specific date/time you're about to book — in their own time zone — and get their explicit confirmation, and (2) collect their name, email, AND a brief reason for the meeting (ask for the reason if not given; it's required and shared with the host).

Argument	Type	Description
handle*	string	The host's booking handle, e.g. "@alice" or "alice" (the leading @ is optional).
reason*	string	A short description of why the booker wants to meet (the agenda / purpose). Required — ask the booker for it before booking. Shared with the host alongside the invite.
startAt*	string	The exact ISO-8601 `start` value copied verbatim from a check_availability slot (an absolute UTC instant, e.g. 2026-07-28T17:00:00Z). Do NOT construct this from a local wall-clock time the booker said — that risks the wrong time zone; always copy the slot's start.
bookerName*	string	Full name of the person the meeting is for (the booker).
bookerEmail*	string	The booker's email. The confirmation and calendar invite are sent here.
viewerTimeZone

check_availability

Return the open meeting slots a Lucie Sync host offers, plus their booking rules (durations offered, minimum notice, how far ahead you can book, buffer between meetings). Returns only bookable slots and policy — never the host's raw calendar. Use this to find a time before proposing one to the user. Slots are absolute instants (ISO-8601 UTC). Pass the booker's viewerTimeZone so times display in THEIR local zone — the booker should never have to do time-zone math.

read-only

Argument	Type	Description
to	string	ISO-8601 end of the search window. Defaults to the host's max-advance horizon.
from	string	ISO-8601 start of the search window. Defaults to now + the host's minimum notice.
handle*	string	The host's booking handle, e.g. "@alice" or "alice" (from their lucie.network/book/@<handle> link). The leading @ is optional.
viewerTimeZone	string	The booker's IANA time zone, e.g. "Asia/Singapore" or "America/New_York". Pass the booker's own zone so slots are shown in their local time. Defaults to the host's zone if omitted.
durationMinutes	integer	Desired meeting length in minutes. Must be one the host offers. Defaults to 30 if omitted.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "handle"
  ],
  "properties": {
    "to": {
      "type": "string",
      "description": "ISO-8601 end of the search window. Defaults to the host's max-advance horizon."
    },
    "from": {
      "type": "string",
      "description": "ISO-8601 start of the search window. Defaults to now + the host's minimum notice."
    },
    "handle": {
      "type": "string",
      "description": "The host's booking handle, e.g. \"@alice\" or \"alice\" (from their lucie.network/book/@<handle> link). The leading @ is optional."
    },
    "viewerTimeZone": {
      "type": "string",
      "description": "The booker's IANA time zone, e.g. \"Asia/Singapore\" or \"America/New_York\". Pass the booker's own zone so slots are shown in their local time. Defaults to the host's zone if omitted."
    },
    "durationMinutes": {
      "type": "integer",
      "description": "Desired meeting length in minutes. Must be one the host offers. Defaults to 30 if omitted.",
      "exclusiveMinimum": 0
    }
  },
  "additionalProperties": false
}

create_group_event

Create a Lucie group event (a poll) for several participants, pre-filled with candidate times when everyone is free (the intersection of their availability). Returns a vote link to share: participants pick which proposed times work, and people WITHOUT a Lucie handle can vote manually too. This is a write (creates a poll) but sends no emails and touches no calendars. Confirm the title, participants, and duration with the organizer before creating. Note: agent group scheduling is a Sync Pro feature — the organizer's email must be on Sync Pro (or a Lucie Membership).

Argument	Type	Description
to	string	ISO-8601 end of the search window.
from	string	ISO-8601 start of the search window.
title*	string	The meeting title, e.g. "Q3 planning sync".
handles*	array	Participants' @handles whose availability seeds the candidate times. The leading @ is optional.
timeZone	string	IANA time zone for the poll's displayed times, e.g. "America/New_York". Defaults to UTC.
organizerName*	string	The organizer's name (shown on the poll).
organizerEmail*	string	The organizer's email.

find_group_times

Given several Lucie hosts (by @handle), return the meeting times when ALL of them are free — the intersection of their availability — for a meeting of the given length. Read-only: never books, never exposes anyone's raw calendar (only the shared open slots). Use it to propose a group time. Times are absolute instants; pass viewerTimeZone so they show in the organizer's local zone.

read-only

Argument	Type	Description
to	string	ISO-8601 end of the search window.
from	string	ISO-8601 start of the search window.
handles*	array	The participants' booking handles, e.g. ["@alice", "@bob"]. The leading @ is optional.
viewerTimeZone	string	The organizer's IANA time zone, e.g. "America/New_York". Common times are shown in this zone. Defaults to UTC.
durationMinutes	integer	Meeting length in minutes. Must be one every participant offers. Defaults to 30.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "handles"
  ],
  "properties": {
    "to": {
      "type": "string",
      "description": "ISO-8601 end of the search window."
    },
    "from": {
      "type": "string",
      "description": "ISO-8601 start of the search window."
    },
    "handles": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 8,
      "minItems": 1,
      "description": "The participants' booking handles, e.g. [\"@alice\", \"@bob\"]. The leading @ is optional."
    },
    "viewerTimeZone": {
      "type": "string",
      "description": "The organizer's IANA time zone, e.g. \"America/New_York\". Common times are shown in this zone. Defaults to UTC."
    },
    "durationMinutes": {
      "type": "integer",
      "description": "Meeting length in minutes. Must be one every participant offers. Defaults to 30.",
      "exclusiveMinimum": 0
    }
  },
  "additionalProperties": false
}