Agent-Native Calendar
Agent-Native Google Calendar - manage events, sync, and public booking
Runs in the cloud
Apple Calendar
Overview
Description from the maker (original English)
Read, search and plan Apple Calendar on macOS via EventKit: free time, undo, you approve deletes
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiVery new★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs on your computer
- Transport: stdio
- Category: Docs, sheets & office work
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on your computer with your user’s permissions (files, network, apps).
- The registry lists no key to fill in.
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Download the maker’s .mcpb file
The link goes to the maker’s own file; we do not host or repackage it. Open the file and Claude Desktop installs it.
Run this in your terminal
Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
Runs on your computer; the tool list appears in your AI app after you install it.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 9, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account mp-consulting, which owns the repo
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- – Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
- – Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
- … Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints
Compared with others in Docs, sheets & office worki
- More stars than 0% of the other 3607 servers in this category
- Published to the registry more recently than 76% of the other 3607 servers in this category
- Basic checks equal to or better than 100% of the other 3607 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is Apple Calendar safe?
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).
Is it still maintained?
The GitHub repo last changed –, and the latest version (0.4.1) reached the registry 9 days ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need MCPB on your computer.
What can I use instead?
In the same category: Agent-Native Calendar, Excel MCP Server, MCP Server for Excel
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Excel MCP Server
Lets AI create and edit Excel files itself, including formulas, charts and PivotTables, without Excel installed.
Runs on your computer
MCP Server for Excel
Excel automation for AI - Sheets, Power Query, DAX, VBA, Tables, Ranges and more. Windows only.
Runs on your computer
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Apple Calendar MCP
Let Claude read, search and plan your Apple Calendar: fast, local, and nothing deleted or sent to other people without your OK.
Apple Calendar MCP is an MCP server for the Calendar app on your Mac, plus a small menu bar app. Claude (Claude Code, the Claude app, or any MCP client) can see your day, search years of events, find free time across all your calendars, plan focus blocks, prepare meetings, and add or move events, and it can only delete an event, or change one other people are invited to, after you click OK.
The companion of Apple Mail MCP, built the same way.
Any calendar account, ready for AI
Apple Calendar MCP works with every calendar you can add to Calendar: iCloud, Google, Microsoft 365 and Exchange, Yahoo, Fastmail, any CalDAV server, subscribed calendars (holidays, sports, team schedules), birthdays, and calendars on your Mac only.
Your provider needs no API, no developer account and no MCP support of its own. Add the account in Calendar › Settings › Accounts as you normally would; as soon as Calendar syncs it, every tool works with it, side by side with the others. Your passwords stay with macOS: this app never sees them and never connects to your provider.
Why another Calendar server?
Most Calendar servers drive Calendar with AppleScript. Calendar then walks its events one by one, so a search over a busy year takes seconds or times out, repeating events come back wrong, and Calendar is busy meanwhile.
Apple Calendar MCP uses EventKit, the framework Calendar itself is built on. Reads are database queries that return in milliseconds, repeating events expand exactly as Calendar shows them, and Calendar never has to run.
- Fast: a day, a week or a year of events in milliseconds, from every account at once.
- Free time that knows your week: working hours, buffers between meetings, all-day and declined events handled the way Calendar shows them.
- Safe by default: deleting asks first, changes to events other people are invited to ask first, every change can be undone, and each calendar is yours to set: Claude may change it, only read it, or never see it.
- Many changes, one OK: a week of focus blocks or a rescheduled afternoon is one call, one approval and one undo.
- Reminders too: with Reminders access, Claude lists, adds and ticks off reminders, and the agenda shows what is due.
- One permission (two with Reminders): given once to the menu bar app. No Full Disk Access, no Automation.
- No passwords, no cloud: everything stays on your Mac.
Install
Homebrew:
brew install --cask mp-consulting/tap/apple-calendar-mcpOr download the app or the Claude extension from the latest release:
| File | For |
|---|---|
AppleCalendarMCP-x.y.z.dmg | The menu bar app with the server inside: Calendar access, approvals, activity, skills, one-click setup. Required. |
AppleCalendarMCP-x.y.z.mcpb | The Claude app only: double-click to install the server as a Claude extension. It still needs the app above for Calendar access. |
Both are notarized, signed with Developer ID, and run on Apple silicon and Intel Macs (macOS 14+). The server is also listed in the MCP registry as io.github.mp-consulting/apple-calendar-mcp.
Then:
- Open Apple Calendar MCP: a calendar appears in the menu bar.
- Click Allow Calendar Access and choose Allow Full Access in the macOS prompt.
- Open the Claude tab and click Connect next to Claude Code and/or the Claude app.
Permissions
macOS gives calendar access to the app that starts a process. Claude, a terminal or an editor starts the server, and none of them can be given Calendar access on its behalf. So the menu bar app holds the Calendars permission, and servers reach your calendars through it, over a socket in your owner-only support folder. Each side checks the other's code signature: the app answers only this project's server, and the server talks only to this project's app. If the app is not running, the server opens it in the background.
| Permission | Why | Where |
|---|---|---|
| Calendars › Full Access for Apple Calendar MCP | Read and change events | Asked once by the app; System Settings › Privacy & Security › Calendars |
| Reminders › Full Access (optional) | Read, add and complete reminders | Asked when you turn Reminders on in the app's Settings tab; System Settings › Privacy & Security › Reminders |
claude.ai and your phone
The Claude apps on iPhone, Android and the web reach Calendar on your Mac as a custom connector. The menu bar app serves MCP over HTTP with OAuth; a tunnel (such as cloudflared) publishes it at an HTTPS address of yours. Turn it on in More settings… › Remote access:
- Enter the public address the tunnel publishes, such as
https://mcp.example.com/me/calendar. Several servers can share one host name, each on its own path (Apple Mail MCP at/me/mail, for instance). - Route that path to the port (8591 by default) in the tunnel. The route must also carry the discovery documents, which OAuth puts at the root with the path appended; the settings show the exact path pattern, for example
^/(\.well-known/[^/]+/)?me/calendar(/.*)?$. - Set a passcode to approve connections from anywhere, or approve them in the menu bar app.
- In claude.ai, Settings › Connectors › Add custom connector with the connector URL (no client ID or secret). Connect opens the sign-in page:
A connection may do what Claude on the Mac may do, or only read; deleting and changing shared events still wait for your OK in the menu bar app. Connected apps lists each one, and Disconnect ends it at its next request. Tokens last an hour and refresh for 90 days of use; the server keeps only their hashes. Details, the tunnel set-up and the security model: docs/remote.md.
What Claude can do
| Tool | What it does |
|---|---|
agenda | Today (or the next days) in one call: what's now and next, conflicts, free time left, open invitations, reminders due |
list_events | Events in a period, from all calendars or some, repeating ones expanded |
search_events | Text, person, place, calendar, dates, video calls, status; or counts per calendar, month, weekday or person with group_by |
get_event | One event in full: notes, attendees and their answers, alarms, repeat rule, video link |
find_free_time | Slots of a given length within your working hours, with buffers, across every calendar that counts; within someone else's working hours in their time zone too; as text to paste in a message |
find_conflicts | Overlapping events that both take the time |
find_duplicates | Events entered twice, which copy to keep, and which copies can safely go |
pending_invitations | Invitations you haven't answered |
respond_to_invitation | Accept, decline or answer "maybe" to an invitation; Calendar sends the answer to the organizer |
calendar_statistics | Where time went: per calendar, weekday, hour and person, meeting load, back-to-back meetings |
list_calendars | Calendars with their account, colour and whether they can be changed |
create_event, update_event, delete_event | Add, change, move or delete events, one occurrence or the whole series, with alarms and repeat rules |
create_events, update_events | Many events in one call, checked before any change, one approval and one undo for all of them |
list_reminders, create_reminder, update_reminder, delete_reminders | Reminders: what's open or overdue, add one with a due day or time, tick it off, move it to another list |
undo_change | Lists recent changes and puts one back |
import_ics, export_events | Add events from an .ics file (an invitation saved from Mail), or write events to .ics, CSV or JSON: free/busy only, or as an invitation to attach to an email |
open_in_calendar | Show an event or a day in Calendar |
Event ids are EventKit's own; one occurrence of a repeating event is # .
EventKit cannot invite people from Calendar. Invite them in Calendar, or by email: export_events with invite writes a standard invitation they can accept or decline, and the calendar-invite-by-mail skill attaches it to a draft in Mail (with Apple Mail MCP). Invitations to you can be answered with respond_to_invitation, which uses the same (undocumented) EventKit call as Calendar; the account sends the answer to the organizer, and the app asks you first.
You stay in control
<img src="docs/images/approval.png" width="460" alt="The approval window: a change to a share
Only the beginning is shown; read the rest in the repo