mcpbeat Sign in

Outlook MCP Server

local only

Outlook runs on your own machine — the client starts it, so there is no endpoint to ping. 131 installs a week from npm. Last commit 24 Oct 2026.

Outlook & OneDrive MCP: personal & enterprise tools for mail, calendar, contacts, tasks, files

Installs per day peak 179 · avg 30 · -80% w/w
a month agotoday
131
Installs / week
npm · olkcli
21
Stars
1 open issue
24 Oct 2026
Last commit
7 releases in 90 days
MIT
License
Go

What the code does

We read the source, 23 h ago · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

  execFileSync(binaryPath(), process.argv.slice(2), { stdio: "inherit" });
In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

            out = filepath.Join(b.env.saves.path, s)

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add outlook -- npx -y olkcli
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "outlook": {
      "command": "npx",
      "args": [
        "-y",
        "olkcli"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.outlook]
command = "npx"
args = ["-y", "olkcli"]
.cursor/mcp.json
{
  "mcpServers": {
    "outlook": {
      "command": "npx",
      "args": [
        "-y",
        "olkcli"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "outlook": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "olkcli"
      ]
    }
  }
}

Alternatives to Outlook

same job, measured the same way
Outlook MCP
by mpalermiti

Microsoft Outlook personal accounts: mail, rules, calendar, contacts, to-do, drafts (77 tools).

3 413 installs/wk local only
Outlook Assistant
by littlebearapps

Microsoft Outlook MCP server — 22 tools for email, calendar, contacts, and mailbox management.

504 installs/wk local only
Outlook MCP
by littlebearapps

Microsoft Outlook MCP server — 20 tools for email, calendar, contacts, and settings via Graph API.

local only
Outlook Personal MCP
by salahawad

Full-control MCP server for a personal Outlook.com mailbox and calendar (Microsoft Graph).

166 installs/wk local only
Local MCP
by lanchuske

Native macOS MCP server — 82 tools for Mail, Calendar, Teams, OneDrive and more.

local only
Google Workspace MCP Server
by conorbronsdon

67 curated MCP tools for Google Workspace: Gmail, Calendar, Drive, Sheets, Docs, Slides, Tasks.

366 installs/wk local only
Hub
by itsbreeze

Multiple Google accounts (Gmail, Calendar, Drive, Contacts, Tasks) in one Claude connector.

answering
ox-mcp
by rheopyrin

MCP server for Open-Xchange: email (IMAP/SMTP), Sieve filters, CalDAV calendar, CardDAV contacts

81 installs/wk local only

Outlook — questions

Answers built from our own checks of this server.

Why is there no uptime for Outlook?
Outlook runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package olkcli was installed 131 times last week.
How do I connect Outlook?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls olkcli straight from npm; nothing to host, nothing to sign up for.
How many people use Outlook?
The npm package olkcli was installed 131 times in the last week. Week over week that is -80%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Outlook open source?
Yes — it is published under the MIT licence, written in Go, 21 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.