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ox-mcp MCP Server

local only

ox-mcp runs on your own machine — the client starts it, so there is no endpoint to ping. 43 installs a week from npm. Last commit 19 Jul 2026.

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

Installs per day peak 22 · avg 8 · +104% w/w
a month agotoday
43
Installs / week
npm · @rheopyrin/ox-mcp
0
Stars
0 open issues
19 Jul 2026
Last commit
0 releases in 90 days
MIT
License
TypeScript

Nothing serious here today

Today is the operative word: we check ox-mcp every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

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 ox-mcp -- npx -y @rheopyrin/ox-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "ox-mcp": {
      "args": [
        "-y",
        "@rheopyrin/ox-mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.ox-mcp]
command = "npx"
args = ["-y", "@rheopyrin/ox-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "ox-mcp": {
      "args": [
        "-y",
        "@rheopyrin/ox-mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "ox-mcp": {
      "args": [
        "-y",
        "@rheopyrin/ox-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: OX_MCP_MAIL_SERVER (IMAP/SMTP/ManageSieve host for the mail section (email_* tools).), OX_MCP_MAIL_USER (Login user (mailbox address) for the mail section.), OX_MCP_MAIL_APP_PASSWORD (App password for the mail section (basic auth).), OX_MCP_CALDAV_SERVER (CalDAV host for the calDav section (calendar_* tools).), OX_MCP_CALDAV_USER (Login user for the calDav section.), OX_MCP_CALDAV_APP_PASSWORD (App password for the calDav section (servers may scope passwords per protocol).), OX_MCP_CARDDAV_SERVER (CardDAV host for the cardDav section (contact_* tools).), OX_MCP_CARDDAV_USER (Login user for the cardDav section.), OX_MCP_CARDDAV_APP_PASSWORD (App password for the cardDav section.). The author declared them in the registry entry; get the values from the project itself.

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ox-mcp — questions

Answers built from our own checks of this server.

Why is there no uptime for ox-mcp?
ox-mcp 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 @rheopyrin/ox-mcp was installed 43 times last week.
How do I connect ox-mcp?
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 runs locally, so the command pulls @rheopyrin/ox-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use ox-mcp?
The npm package @rheopyrin/ox-mcp was installed 43 times in the last week. Week over week that is +104%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is ox-mcp open source?
Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.