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Calendar

Ask your .ics calendar when you're free and what clashes.

Free tier needs no key. See the exact limits.

What you get

Find a free hour across two calendars

Consultant in Amsterdam with a work and a personal calendar

Report

Tool call	What it did
ics_import	Loads the work and personal .ics files
free_busy	Finds open slots in working hours

A list of open slots of 90 minutes or more across both calendars.

Example from "Find a free hour across two calendars". Invented names, real math from the tools.

Point it at the .ics file your calendar already exports. Ask what's on this week, when you're free, what's double-booked, or turn a client meeting into a billable time entry. It only reads the file. It never writes to your calendar.

Made for Freelancers, Consultants, Assistants

3 requests, start to finish

Example chats. Each one uses real tools of this server, named as they run. The people and firms are made up.

Example done on the free tier. Doing this every week? Pro removes the limit for $19, once. Free vs Pro

Example 1 · Consultant in Amsterdam with a work and a personal calendarFind a free hour across two calendars

When am I free for 90 minutes next week between 9:00 and 17:00 Amsterdam time?
- ics_import Loads the work and personal .ics files
- free_busy Finds open slots in working hours
A list of open slots of 90 minutes or more across both calendars.

Saves about 10 min (our estimate)
Example 2 · Executive assistant in New YorkCatch double bookings

Anything double-booked in the next 30 days?
- conflicts Finds overlapping events in the window
Each clash with both event names and times. Free tier answers windows up to 31 days.

Saves about 15 min (our estimate)
Example 3 · Freelance UX researcher in WarsawBill the client call

Turn Tuesday's interview with Acme into a billable entry at PLN 250 an hour.
- events_search Finds the Acme interview
- event_to_time_entry Converts its duration into a time entry
A time entry with the exact duration and PLN 250 rate, ready to invoice.

Saves about 5 min (our estimate)

Free and Pro, line by line

The free column is yours with no key. The Pro column costs $19 once, or comes with the $39 bundle.

Free

$0 no key

Pro

$19 once, lifetime

2 calendars

Unlimited calendars

Questions over up to 31 days

Any window

50 events per export

Unlimited events per export

Import from a file

Import from a URL or webcal feed

Install free

Buy Calendar Pro, $19

Saw a message that says the free tier allows a set number per month? That's the limit Pro removes. Paste the key where the token goes, or set MCP_LICENSE_KEY.

Or Pro on all 49 paid servers for $39 once. Get the bundle

Limits read from the code: servers/calendar/src/index.ts:37-39 (FREE_MAX_CALENDARS = 2, FREE_MAX_WINDOW_DAYS = 31, FREE_MAX_EXPORT_EVENTS = 50), :360 (URL import)

Install

Works with Claude, Cursor, VS Code and other MCP clients. The hosted URL needs no install at all.

npm @theluckystrike/mcp-calendar

Hosted URLClaude DesktopnpxClaude Code

Get a free token. It lasts 30 days and allows 600 calls per hour. Or open the connect page for a ready URL.
Paste the URL with your token as a custom connector in your MCP client.

1. Free token

curl -s -X POST https://mcp.zovo.one/mcp/token

2. Connector URL (replace <token>)

https://mcp.zovo.one/mcp/calendar/t/<token>

Download the .mcpb bundle and open it. Claude Desktop installs it in one click.

Download calendar.mcpb

Add this to your MCP client config (Claude Desktop, Cursor, VS Code). Needs Node.js.

{
  "mcpServers": {
    "calendar": {
      "command": "npx",
      "args": [
        "-y",
        "@theluckystrike/mcp-calendar"
      ]
    }
  }
}

One command in your terminal.

claude mcp add --transport http calendar https://mcp.zovo.one/mcp/calendar/t/<token>

# or run it locally
claude mcp add calendar -- npx -y @theluckystrike/mcp-calendar

Jobs this server does

Timezone

Find a meeting time across time zones

Meeting slots across time zones and calendar invites, read from the .ics your calendar already exports. Uses the Timezone server. Paste one URL, no install.

You get: Ready-to-send text

All tools (10)

Tool	What it does
`calendars_list`	List imported calendars: name, event-definition count, size, source, import time and free-tier use of the 2 slots.
`conflicts`	Find double bookings: every PAIR of timed events that overlap, with the minutes they collide, across all calendars unless you name one.
`event_export`	Call this tool to write chosen events to a new .ics file you can send or import elsewhere.
`event_to_time_entry`	Take one event and return the exact arguments for the time-tracker's entry_add, so a meeting that already happened becomes billable time without retyping it.
`events_list`	Every event between two dates, recurring expanded to occurrences, sorted by start.
`events_search`	Find events whose title, description, location or attendees contain a phrase.
`free_busy`	Merged busy blocks and the free gaps inside your working hours over a day range.
`ics_forget`	Remove one imported calendar by name and delete this server's local copy of its .ics, freeing a slot.
`ics_import`	Call this tool to read a calendar export and keep it under a name.
`next_event`	The first event not yet started, within the next 366 days, across every imported calendar or one you name.

Questions

Does it change my calendar?

No. It reads the .ics you give it. event_export writes a new file only when you ask.

Does it connect to Google Calendar directly?

No. Export .ics from your calendar, or on Pro import a URL or webcal feed.

Calendar

3 requests, start to finish

Free and Pro, line by line

Install

Jobs this server does

Find a meeting time across time zones

All tools (10)

Questions

More in Time and expenses

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