ox-mcp
MCP server for Open-Xchange: email (IMAP/SMTP), Sieve filters, CalDAV calendar, CardDAV contacts
Using ox-mcp in Claude, Cursor, Gemini CLI, Cline, or Zed?
MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).
Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less
uv tool install mcpindex-gate && mcpindex-config-wireVerdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.
Own this server? Screen its description →
That verdict was true at screening time (snapshot 2026-07-20).
Contracts can change after screening, with no version bump. The gate pins ox-mcp’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.
OX_MCP_MAIL_SERVERIMAP/SMTP/ManageSieve host for the mail section (email_* tools).
OX_MCP_MAIL_USERLogin user (mailbox address) for the mail section.
OX_MCP_MAIL_APP_PASSWORDApp password for the mail section (basic auth).
OX_MCP_CALDAV_SERVERCalDAV host for the calDav section (calendar_* tools).
OX_MCP_CALDAV_USERLogin user for the calDav section.
OX_MCP_CALDAV_APP_PASSWORDApp password for the calDav section (servers may scope passwords per protocol).
OX_MCP_CARDDAV_SERVERCardDAV host for the cardDav section (contact_* tools).
OX_MCP_CARDDAV_USERLogin user for the cardDav section.
OX_MCP_CARDDAV_APP_PASSWORDApp password for the cardDav section.
Turn a written schedule into a live calendar link people subscribe to in Apple, Google, Outlook.
Real-world actions for AI coding agents: domains, email, deploys, payments, and media generation.
Search companies, enrich contacts, and reveal emails and phones from your AI agent.