Microsoft 365 MCP Server

by proscendia Your server? Claim it

answering

Microsoft 365 is answering right now. Last checked 2 min ago.

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

Uptime history 20 days of history · worst day 97%

20 days agonow

98.9%

Uptime 24h

90 of 91 checks

—

Tools

hidden behind auth

1128 ms

Response time

average over 24h

API key or OAuth

Access

streamable-http

Microsoft 365 does not always answer

Over the last week it answered 98.7% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not 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 2 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, but you need an API key or OAuth to use it.

Endpoints

URL	Transport	State	Latency	Checked
https://microsoft-mcp.proscendia.com/mcp	streamable-http	needs key	220 ms	2 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 1128 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 will need your own key or an OAuth login: it refuses anonymous clients.

Does Microsoft 365 need an API key?

Yes. Every time we knock, Microsoft 365 answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.

How fast is Microsoft 365?

It answers our handshake in 1128 ms on average, which is faster than 5% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.