Multi Calendar

Name: Multi Calendar
Author: lumman-lab

作者：lumman-lab版本 1.3.0i★ –i在云端运行

注册名称co.lumman/calendar

安装

概览

作者提供的说明（英文原文）

Outlook.com, Microsoft 365, Google, iCloud, CalDAV: free time, events, invites, bookings, polls.

PopNx MCP 的三大支柱

这三项永远不会合并成一个分数：意见、测量和人气是不同的东西。

用户评价i暂无评价评价功能将在后续阶段与账户功能一起开放
我们的基础检查i3 项中通过 3 项依据公开信息检查；尚未扫描代码
使用情况i尚未统计★ –

它能帮你做什么

我们还没有为它写通俗的介绍。下面是我们从注册中心读取到的事实。

连接方式: 在云端运行
传输方式: Streamable HTTP
分类: 文档、表格与办公

安装

选择你使用的 AI 应用，然后复制设置。

安装之前

基础检查：3 项中通过 3 项
在作者的服务器上运行：你向它提出的内容会经过他们的服务器。
注册中心没有列出需要填写的密钥。

你需要

在云端运行无需安装任何东西，通过互联网连接

你用的是哪个应用？

ClaudeClaude CodeCursorVS CodeChatGPT

在上方选择你的应用。我们会记住它，下次按钮会显示“安装到 …”。

适用于网页版、桌面版和手机版 Claude：

打开 Settings → Connectors
点击 Add custom connector
粘贴下面的地址，然后点击 Add
如果要求登录，请登录作者的服务

https://calendar.lumman.co/mcp

在终端中运行这条命令

claude mcp add --transport http calendar https://calendar.lumman.co/mcp

在 Cursor 中打开

或者自己复制设置

粘贴到项目中的 .cursor/mcp.json，或 ~/.cursor/mcp.json

{
  "mcpServers": {
    "calendar": {
      "url": "https://calendar.lumman.co/mcp"
    }
  }
}

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

在 VS Code 中打开

或者自己复制设置

粘贴到项目中的 .vscode/mcp.json

{
  "servers": {
    "calendar": {
      "type": "http",
      "url": "https://calendar.lumman.co/mcp"
    }
  }
}

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

ChatGPT 只能连接互联网上的服务器：

打开网页版 ChatGPT → Settings → Connectors (Apps)
点击 Create 或 Add（部分套餐需要先在 Advanced 中开启 Developer mode）
粘贴下面的地址，起个名字，然后保存
如果要求登录，请登录作者的服务

https://calendar.lumman.co/mcp

菜单名称可能因套餐和版本不同而略有差异。

你的选择通过 Cookie 保存在这台设备上，无需账户。

这些设置是根据作者在注册中心的条目生成的。如果 README 的写法不同，请以 README 为准。

它能做什么

服务器要求先登录，才会列出它的工具。

基础检查i

我们检查的是任何人都能看到的信息；我们没有阅读代码。不适用的检查项不计入总数。 · 检查于 2026年11月7日

✓ 通过
作者与仓库一致
注册名称已通过域名 lumman.co 验证（注册中心会核实域名所有权）
… 尚未检查
仍在维护
我们还没有从 GitHub 读取这个仓库
… 尚未检查
有许可证
我们还没有从 GitHub 读取这个仓库
✓ 通过
端点有响应
在 220 毫秒内响应（HTTP 401）
✓ 通过
使用 OAuth 登录
声明支持 OAuth 登录，你的 AI 应用可以带你去登录
… 尚未检查
工具描述中没有隐藏指令
尚未检查；我们会在检查端点时读取工具列表

与“文档、表格与办公”中的其他服务器比较i

星标数多于此分类中其他 2193 个服务器的 0%
发布到注册中心的时间比此分类中其他 2193 个服务器的 84% 更新
基础检查结果等于或优于此分类中其他 2193 个服务器的 100%

与注册中心里这个分类中所有活跃的服务器比较。只有当发布者拥有该仓库时，星标数才计入。

常见问题

Multi Calendar 安全吗？

它在 3 项适用的基础检查中通过了 3 项。我们没有阅读代码。在添加密钥或令牌之前，请先看看这个服务器要求哪些权限，并使用只具备所需权限的密钥。

它需要哪些密钥或代码？

注册中心没有列出必需的密钥，不过有些服务器会在首次使用时要求你登录。

它在我的电脑上运行还是在云端？

它在作者的云端运行。通过互联网连接，无需安装，但你发送的内容会经过作者的服务器。

它还在维护吗？

GitHub 仓库最后更新于–，最新版本（1.3.0）于5天前进入注册中心。

哪些应用可以使用它？

支持 MCP 的应用，例如 Claude Desktop、Claude Code、Cursor 和 VS Code。它通过 URL 连接，所以接受远程 MCP 服务器的应用也可以使用，例如开启开发者模式的 ChatGPT。

有什么可以替代它？

同一分类中有：Agent-Native Calendar, Excel MCP Server, MCP Server for Excel

替代选择

同一分类中其他作者的服务器，按星标数排序。

如何看卡片：★ GitHub 星标i三大支柱：评价 · 检查 · 使用情况i更新 = 最新版本发布到注册中心的时间i

Agent-Native Calendar

作者：BuilderIO

Agent-Native Google Calendar - manage events, sync, and public booking

在云端运行★ 7,620MIT2个月前更新

安装

Excel MCP Server

作者：haris-musa

Create and edit Excel files with AI: charts, PivotTables, formulas. No Excel needed.

在你的电脑上运行★ 4,276MIT6天前更新

安装

MCP Server for Excel

作者：sbroenne

Excel automation for AI - Sheets, Power Query, DAX, VBA, Tables, Ranges and more. Windows only.

在你的电脑上运行★ 847MIT3天前更新

安装

作者的 README

打开 README

按原文从作者的仓库复制。PopNx MCP 没有审查或背书其内容。HTML、图片和脚本已被移除。链接会离开本站。

Multi Calendar

Outlook.com, Microsoft 365, Google, iCloud, CalDAV: free time, events, invites, bookings, polls.

Multi Calendar is a remote MCP server run by Lumman Ltd. It puts every calendar account you connect - Outlook.com and Hotmail, Microsoft 365, Google, iCloud, Fastmail and other CalDAV calendars, several of each - behind one connector, so an AI client can find time free in all of them in one call, read and change events, answer invitations, and hand out booking links, booking pages and group polls. This repository holds what clients install: the manifests for Claude Code, Cursor, Gemini CLI and Antigravity, three skills and their evals. The server itself is not in it.

Before you start

You need a Lumman account with at least one calendar account connected - in the window your AI client opens when it first connects, or at https://lumman.co/mcp/account/multi-calendar. Sign in there with Google, Microsoft, a passkey or an emailed code. Outlook.com, Hotmail and Microsoft 365 calendars connect with Microsoft sign-in, Google calendars with Google sign-in, iCloud calendars with an app-specific password made at Apple, and Fastmail and other CalDAV calendars with their address and a password. Each calendar account's permissions - seeing events, changing events, and inviting and replying - are set on the same page, and your time zone, working hours and other scheduling preferences on its Scheduling page, https://lumman.co/mcp/account/multi-calendar/scheduling.

Add it to your client

Claude

Open Multi Calendar in Claude's connectors directory, https://claude.ai/directory/connectors/lumman-multi-calendar, and press Connect. The listing connects at https://calendar.lumman.co/mcp.

Claude Code

/plugin marketplace add lumman-lab/multi-calendar

/plugin install multi-calendar@multi-calendar

The plugin adds the connector at https://calendar.lumman.co/mcp and the three skills below. The first time a skill reaches the connector, Claude Code asks you to sign in; if it does not, run /mcp and choose the multi-calendar server.

Cursor

Add the connector to ~/.cursor/mcp.json:

"mcpServers": { "multi-calendar": { "url": "https://calendar.lumman.co/mcp" } } }

VS Code

Run MCP: Add Server, choose HTTP, paste https://calendar.lumman.co/mcp and name it multi-calendar. Or add it to your user mcp.json:

"servers": { "multi-calendar": { "type": "http", "url": "https://calendar.lumman.co/mcp" } } }

Gemini CLI

gemini extensions install https://github.com/lumman-lab/multi-calendar

The extension adds the connector at https://calendar.lumman.co/mcp and the three skills below. Its first call opens Lumman's sign-in in your browser; /mcp auth multi-calendar opens it again.

Antigravity

agy plugin install https://github.com/lumman-lab/multi-calendar

The plugin adds the connector at https://calendar.lumman.co/mcp and the three skills below, for the Antigravity CLI, app and IDE alike. To sign in, run /mcp in the CLI, open multi-calendar_multi-calendar and choose Authenticate, or in the app or IDE press Authenticate next to it under Agent settings, Customizations; approve on the Lumman page that opens, then paste the code Antigravity's page shows back into Antigravity.

ChatGPT

Works fully on ChatGPT Business, Enterprise and Edu.

Open chatgpt.com/plugins, press +, then Add custom MCP server.
Name it Multi Calendar, paste https://calendar.lumman.co/mcp, choose OAuth, tick the box and press Create as a plugin.
Install it. On the Lumman page, sign in, add a calendar if none is connected, and approve.
In a chat, type @ and choose Multi Calendar.

Any other client

Add a remote MCP server at https://calendar.lumman.co/mcp: Streamable HTTP, OAuth 2.1 with dynamic client registration. No key or client id is needed.

Signing in

The connector answers a client's first call with where to sign in. The client registers itself with Lumman's authorisation server and opens a Lumman page that names it: sign in, add a calendar if none is connected, and approve. Every client you approve is listed under Connected AI clients at https://lumman.co/mcp/account/multi-calendar, where its access can be taken back.

Skills

Claude Code, Cursor, Gemini CLI and Antigravity load three skills with the connector, and pick one by themselves when a request matches it. In Claude Code each is also a command, such as /multi-calendar:week.

free-time - when you are free across every calendar, within your working hours, or when everyone in one of your circles is, with every calendar it could not read named. Books nothing.
meetings - a meeting with guests shown to you as a draft, then made and its invitations sent only after you say yes to that draft.
week - the week across every calendar, each meeting once, day by day, with clashes and unanswered invitations named. Changes nothing.

Examples:

"When am I free for an hour on Thursday across all my calendars?"
"Set up a 30-minute call with sam@example.com from my Outlook calendar on Thursday at 15:00."
"What's on my calendars this week?"

Ready requests

The connector offers these requests ready-made; a client shows them as prompts or commands.

week_ahead - The week ahead. Every meeting of the next seven days across all your calendars, with clashes and invitations still to answer.
daily_agenda - Today's agenda. Today across all your calendars at a glance, made to run as a scheduled task.
answer_invitations - Invitations to answer. Invitations still waiting for your answer across all your calendars, each answered only as you say.
schedule_meeting - Set up a meeting. Find a time every calendar has open and send the invitations once you say yes to the draft.

Tools

Tool	Name
`calendars_list`	List calendars
`events_list`	Read events
`events_get`	Read an event
`free_times_find`	Find a time
`events_create`	Create an event
`events_edit`	Change an event
`events_cancel`	Cancel an event
`events_respond`	Answer an invitation
`preferences_get`	Read scheduling preferences
`preferences_set`	Change scheduling preferences
`busy_everywhere_set`	Show busy time everywhere
`booking_links_create`	Make a booking link
`booking_page_set`	Set up a booking page
`polls_create`	Make a group poll
`polls_results`	Read a poll's answers
`polls_book`	Book a poll's time
`links_polls_list`	List open links and polls
`links_polls_close`	Close a link or poll
`circles_invite`	Invite people into a circle
`circles_list`	List circles
`circles_free_times_find`	Find a time for a circle

Where your calendars go

Every client sends its calls to https://calendar.lumman.co/mcp, run by Lumman. Signing in runs through the authorisation server that address names. Lumman keeps no copy of your calendars: events are read from Microsoft, Google, Apple or the calendar's own server when a client asks, when a guest opens your booking page or link, when a member of your circle searches, and - where you show busy time in another calendar - by Lumman's own pass that keeps those busy blocks current. The words of every event a client reads - an invitation from a stranger included - are screened for prompt attacks by Google Cloud's Model Armor, as are the words of every event a client writes before they reach your calendar, and the events are passed on only to the client you approved. A booking link, booking page or poll keeps what it needs to offer times - its meeting's name and length, and for a poll the addresses it is for and their answers until it closes. What the connector passes on, and to whom, is in the privacy policy: https://lumman.co/privacy.

The meetings skill asks the client to show a meeting and wait for your yes. What the connector itself enforces is each calendar account's permissions, set at https://lumman.co/mcp/account/multi-calendar: with inviting and replying off, no invitation is sent from that account, whatever a client asks. A meeting at a time outside a guest's working day, where their time zone is known, is not sent until the client passes on that you agreed.

Limits

Your time zone is the one stored for you, taken from your device when you first connect; a client never guesses it, and asks you once where none is stored.
Google shows an event as busy or free alone, and Outlook keeps one reminder per event.
A Teams link is made only in a work Microsoft account, a Meet link only in a Google one. Focus time is made only in a Google Workspace account's main calendar.
A circle finds time with people who also use Multi Calendar, and sees only when each member is busy, never what their events say.
An invitation in an iCloud calendar is answered from its invitation letter or in Apple's own Calendar app. In a calendar connected by its server's password, a meeting's invitations and answers go out only where the server says it sends them itself; elsewhere a meeting with guests is refused.
Multi Calendar takes up to 1,000 actions in any 24 hours across all your calendar accounts, whatever the plan; past that, a call is refused with the time the next one is available.
An event whose words screen as a prompt attack is withheld rather than passed on, and a call whose screening cannot finish is closed.

Evals

claude plugin eval . runs three cases, one per skill, and thirteen choose-* cases, against an invented week across an Outlook.com and a Google calendar, with an iCloud and a CalDAV account in their own cases, answered from fixed mock files under evals/. Each choose-* case is a request in a person's own words - what is on, when they are free or available, scheduling, moving, an invitation, a booking page, a poll, an iCloud or a Fastmail calendar - that the connector's tools should take, and three are requests no calendar tool should take. They read the tools' own descriptions, saved in evals/mocks/multi-calendar/_tools.json; the mocks carry no server instructions. Run on 2 November 2026 with Claude Code 2.1.308 and model claude-sonnet-5-5, three runs per case: all thirteen passed 3 of 3.

To see what the skills add, each of the three skill cases ran in two setups with the connector's tools in place: once with the plugin as shipped, once with its skills/ folder removed (claude plugin eval --ablation none). Run on 18 October 2026 with Claude Code 2.1.292, model claude-sonnet-5-5 and claude-sonnet-5-5 as the judge (--judge-model), three runs per case each way:

free-time - gives Thursday's two free stretches and names the account it could not read: 3 of 3 with the skills, 2 of 3 without.
meetings - shows the call as a draft and asks before sending the invitation: 3 of 3 with, 0 of 3 without; without the skills Claude created the event and sent the invitation at once in every run.
week - lists each meeting once, day by day, with the clash, the unanswered invitation and the unread account: 3 of 3 with and without. The skill adds nothing measurable here.

Overall score 1.00 with the skills and 0.67 without. Three runs per case is a small sample, and the mocks answer the same whatever Claude changes.

Security

Report a vulnerability privately through GitHub, as SECURITY.md describes.

Support

Write to the address under Contact Us in Lumman's privacy policy: https://lumman.co/privacy.

Licence

The files in this repository are under the MIT licence in LICENSE. The Multi Calendar service they connect to is provided under Lumman's terms: https://lumman.co/terms.

Multi Calendar

概览

PopNx MCP 的三大支柱

它能帮你做什么

安装

安装之前

它能做什么

基础检查i

作者与仓库一致

仍在维护

有许可证

端点有响应

使用 OAuth 登录

工具描述中没有隐藏指令

与“文档、表格与办公”中的其他服务器比较i

常见问题

替代选择

Agent-Native Calendar

Excel MCP Server

MCP Server for Excel

作者的 README

Multi Calendar

Before you start

Add it to your client

Claude

Claude Code

Cursor

VS Code

Gemini CLI

Antigravity

ChatGPT

Any other client

Signing in

Skills

Ready requests

Tools

Where your calendars go

Limits

Evals

Security

Support

Licence