SERVER

ox-mcp

Rank #17,542

io.github.Rheopyrin/ox-mcp

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

3 versions

1 GitHub stars

by Rheopyrin (2 servers)View repository ↗

First listed

Jul 19, 2026

Last publish date

Oct 12, 2026

PURPOSE

What you can do with ox-mcp

ox-mcp is a Model Context Protocol (MCP) server published by Rheopyrin. It ranks #17,542 of 144,396 active servers on MCP Toplist, and its repository has 1 GitHub stars. ox-mcp is listed across 2 registries — Official MCP and Glama, with 3 tracked versions. It was first listed on Jul 19, 2026 and most recently updated on Oct 12, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What ox-mcp can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using ox-mcp

DeclaredNo credentialsNo credentials declared

The registry listing declares no required environment variables or authentication. This is declared metadata, not a verified install — the repository README is the authority.

Declared by Glama, last synced Oct 16, 2026. Not independently verified by MCP Toplist.

Declared in the registry install config

OX_MCP_MAIL_SERVER · optional
OX_MCP_MAIL_USER · optional
OX_MCP_MAIL_APP_PASSWORD · optional
OX_MCP_CALDAV_SERVER · optional
OX_MCP_CALDAV_USER · optional
OX_MCP_CALDAV_APP_PASSWORD · optional
OX_MCP_CARDDAV_SERVER · optional
OX_MCP_CARDDAV_USER · optional
OX_MCP_CARDDAV_APP_PASSWORD · optional

INSTALLATION AND FIRST TASK

Connect ox-mcp and confirm it works

npm package

claude mcp add ox-mcp -e "OX_MCP_MAIL_SERVER=<your OX_MCP_MAIL_SERVER>" -e "OX_MCP_MAIL_USER=<your OX_MCP_MAIL_USER>" -e "OX_MCP_MAIL_APP_PASSWORD=<your OX_MCP_MAIL_APP_PASSWORD>" -e "OX_MCP_CALDAV_SERVER=<your OX_MCP_CALDAV_SERVER>" -e "OX_MCP_CALDAV_USER=<your OX_MCP_CALDAV_USER>" -e "OX_MCP_CALDAV_APP_PASSWORD=<your OX_MCP_CALDAV_APP_PASSWORD>" -e "OX_MCP_CARDDAV_SERVER=<your OX_MCP_CARDDAV_SERVER>" -e "OX_MCP_CARDDAV_USER=<your OX_MCP_CARDDAV_USER>" -e "OX_MCP_CARDDAV_APP_PASSWORD=<your OX_MCP_CARDDAV_APP_PASSWORD>" -- npx -y @rheopyrin/ox-mcp

Replace each placeholder with your own value before saving.

npm package

[mcp_servers.ox-mcp]
command = "npx"
args = ["-y", "@rheopyrin/ox-mcp"]

[mcp_servers.ox-mcp.env]
OX_MCP_MAIL_SERVER = "<your OX_MCP_MAIL_SERVER>"
OX_MCP_MAIL_USER = "<your OX_MCP_MAIL_USER>"
OX_MCP_MAIL_APP_PASSWORD = "<your OX_MCP_MAIL_APP_PASSWORD>"
OX_MCP_CALDAV_SERVER = "<your OX_MCP_CALDAV_SERVER>"
OX_MCP_CALDAV_USER = "<your OX_MCP_CALDAV_USER>"
OX_MCP_CALDAV_APP_PASSWORD = "<your OX_MCP_CALDAV_APP_PASSWORD>"
OX_MCP_CARDDAV_SERVER = "<your OX_MCP_CARDDAV_SERVER>"
OX_MCP_CARDDAV_USER = "<your OX_MCP_CARDDAV_USER>"
OX_MCP_CARDDAV_APP_PASSWORD = "<your OX_MCP_CARDDAV_APP_PASSWORD>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "ox-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@rheopyrin/ox-mcp"
      ],
      "env": {
        "OX_MCP_MAIL_SERVER": "<your OX_MCP_MAIL_SERVER>",
        "OX_MCP_MAIL_USER": "<your OX_MCP_MAIL_USER>",
        "OX_MCP_MAIL_APP_PASSWORD": "<your OX_MCP_MAIL_APP_PASSWORD>",
        "OX_MCP_CALDAV_SERVER": "<your OX_MCP_CALDAV_SERVER>",
        "OX_MCP_CALDAV_USER": "<your OX_MCP_CALDAV_USER>",
        "OX_MCP_CALDAV_APP_PASSWORD": "<your OX_MCP_CALDAV_APP_PASSWORD>",
        "OX_MCP_CARDDAV_SERVER": "<your OX_MCP_CARDDAV_SERVER>",
        "OX_MCP_CARDDAV_USER": "<your OX_MCP_CARDDAV_USER>",
        "OX_MCP_CARDDAV_APP_PASSWORD": "<your OX_MCP_CARDDAV_APP_PASSWORD>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "ox-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@rheopyrin/ox-mcp"
      ],
      "env": {
        "OX_MCP_MAIL_SERVER": "<your OX_MCP_MAIL_SERVER>",
        "OX_MCP_MAIL_USER": "<your OX_MCP_MAIL_USER>",
        "OX_MCP_MAIL_APP_PASSWORD": "<your OX_MCP_MAIL_APP_PASSWORD>",
        "OX_MCP_CALDAV_SERVER": "<your OX_MCP_CALDAV_SERVER>",
        "OX_MCP_CALDAV_USER": "<your OX_MCP_CALDAV_USER>",
        "OX_MCP_CALDAV_APP_PASSWORD": "<your OX_MCP_CALDAV_APP_PASSWORD>",
        "OX_MCP_CARDDAV_SERVER": "<your OX_MCP_CARDDAV_SERVER>",
        "OX_MCP_CARDDAV_USER": "<your OX_MCP_CARDDAV_USER>",
        "OX_MCP_CARDDAV_APP_PASSWORD": "<your OX_MCP_CARDDAV_APP_PASSWORD>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

npm package

{
  "servers": {
    "ox-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@rheopyrin/ox-mcp"
      ],
      "env": {
        "OX_MCP_MAIL_SERVER": "<your OX_MCP_MAIL_SERVER>",
        "OX_MCP_MAIL_USER": "<your OX_MCP_MAIL_USER>",
        "OX_MCP_MAIL_APP_PASSWORD": "<your OX_MCP_MAIL_APP_PASSWORD>",
        "OX_MCP_CALDAV_SERVER": "<your OX_MCP_CALDAV_SERVER>",
        "OX_MCP_CALDAV_USER": "<your OX_MCP_CALDAV_USER>",
        "OX_MCP_CALDAV_APP_PASSWORD": "<your OX_MCP_CALDAV_APP_PASSWORD>",
        "OX_MCP_CARDDAV_SERVER": "<your OX_MCP_CARDDAV_SERVER>",
        "OX_MCP_CARDDAV_USER": "<your OX_MCP_CARDDAV_USER>",
        "OX_MCP_CARDDAV_APP_PASSWORD": "<your OX_MCP_CARDDAV_APP_PASSWORD>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "ox-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@rheopyrin/ox-mcp"
      ],
      "env": {
        "OX_MCP_MAIL_SERVER": "<your OX_MCP_MAIL_SERVER>",
        "OX_MCP_MAIL_USER": "<your OX_MCP_MAIL_USER>",
        "OX_MCP_MAIL_APP_PASSWORD": "<your OX_MCP_MAIL_APP_PASSWORD>",
        "OX_MCP_CALDAV_SERVER": "<your OX_MCP_CALDAV_SERVER>",
        "OX_MCP_CALDAV_USER": "<your OX_MCP_CALDAV_USER>",
        "OX_MCP_CALDAV_APP_PASSWORD": "<your OX_MCP_CALDAV_APP_PASSWORD>",
        "OX_MCP_CARDDAV_SERVER": "<your OX_MCP_CARDDAV_SERVER>",
        "OX_MCP_CARDDAV_USER": "<your OX_MCP_CARDDAV_USER>",
        "OX_MCP_CARDDAV_APP_PASSWORD": "<your OX_MCP_CARDDAV_APP_PASSWORD>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "ox-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@rheopyrin/ox-mcp"
      ],
      "env": {
        "OX_MCP_MAIL_SERVER": "<your OX_MCP_MAIL_SERVER>",
        "OX_MCP_MAIL_USER": "<your OX_MCP_MAIL_USER>",
        "OX_MCP_MAIL_APP_PASSWORD": "<your OX_MCP_MAIL_APP_PASSWORD>",
        "OX_MCP_CALDAV_SERVER": "<your OX_MCP_CALDAV_SERVER>",
        "OX_MCP_CALDAV_USER": "<your OX_MCP_CALDAV_USER>",
        "OX_MCP_CALDAV_APP_PASSWORD": "<your OX_MCP_CALDAV_APP_PASSWORD>",
        "OX_MCP_CARDDAV_SERVER": "<your OX_MCP_CARDDAV_SERVER>",
        "OX_MCP_CARDDAV_USER": "<your OX_MCP_CARDDAV_USER>",
        "OX_MCP_CARDDAV_APP_PASSWORD": "<your OX_MCP_CARDDAV_APP_PASSWORD>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

ALTERNATIVES

When to choose another server

Other servers by Rheopyrin

db-access-mcp#60,202

View all Rheopyrin servers →

No task-specific alternatives are catalogued for ox-mcpyet; the list above is its publisher's other servers.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed: Jul 19, 2026
Latest version published: Oct 12, 2026
Version history: 3 versions tracked (below)
Requirements evidence: Declared by Glama, last synced Oct 16, 2026. Not independently verified by MCP Toplist.
Profile checked: Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of: Oct 16, 2026

Registry sightings

Official MCP ↗listed since Jul 24, 2026 · still listed
Glama ↗listed since Jul 29, 2026 · still listed

Do you maintain ox-mcp? to correct or enrich this profile.

VERSIONS

Available versions (3)

Version	Published
0.1.4	Oct 12, 2026
0.1.3	Oct 11, 2026
0.1.2	Jul 19, 2026

STANDING

#17,542of 144,396 active serversTop 25%

Ranks ahead of 126,854 of 144,396 servers on MCP Toplist.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.Rheopyrin%2Fox-mcp.svg)](https://mcptoplist.com/server/io.github.Rheopyrin%2Fox-mcp)

HTML

<a href="https://mcptoplist.com/server/io.github.Rheopyrin%2Fox-mcp"><img src="https://mcptoplist.com/badge/io.github.Rheopyrin%2Fox-mcp.svg" alt="MCP Toplist: Top 25% of 144,396" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains ox-mcp?: ox-mcp is maintained by Rheopyrin, which publishes 2 MCP servers (5 total versions) tracked on MCP Toplist.
Is ox-mcp listed on the Official MCP Registry?: Yes — ox-mcp is listed on the Official MCP Registry, alongside Glama.
How many versions does ox-mcp have?: MCP Toplist tracks 3 versions of ox-mcp, most recently published on Oct 12, 2026.
Where can I find the source code for ox-mcp?: The source code for ox-mcp is hosted at github.com/Rheopyrin/ox-mcp.

Used in projects

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