Microsoft 365 MCP Server

by proscendia Your server? Claim it

answering

Microsoft 365 is answering right now. Last checked 14 min ago.

Permissioned access to Outlook, OneDrive and Teams via the user's own Microsoft account

Uptime history 66 days of history · worst day 96%

66 days agonow

98.9%

Uptime 24h

90 of 91 checks

—

Tools

hidden behind auth

201 ms

Response time

average over 24h

OAuth sign-in

Access

streamable-http

Microsoft 365 missed one check this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add microsoft-365 --transport http https://microsoft-mcp.proscendia.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "microsoft-365": {
      "url": "https://microsoft-mcp.proscendia.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.microsoft-365]
url = "https://microsoft-mcp.proscendia.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "microsoft-365": {
      "url": "https://microsoft-mcp.proscendia.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "microsoft-365": {
      "url": "https://microsoft-mcp.proscendia.com/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URL	Transport	State	Latency	Checked
https://microsoft-mcp.proscendia.com/mcp	streamable-http	sign-in	225 ms	14 min ago

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Microsoft 365 — questions

Answers built from our own checks of this server.

Why is there no tool list for Microsoft 365?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 98.9% of checks in the last 24 hours got a reply.

Is Microsoft 365 working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 201 ms. The bar chart above shows every period we have measured.

How do I connect Microsoft 365?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to Microsoft 365?

No API key is involved. Microsoft 365 answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is Microsoft 365?

It answers our handshake in 201 ms on average, which is faster than 62% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.