MCP server

Kalender Sync Official

de.kalender-sync/kalender-sync

Checked 26 Oct 2026, 08:29 UTC · It answered and asked for a sign-in

EU-hosted calendar MCP: Google, Outlook, iCloud, GMX, WEB.DE, CalDAV. Read, book, RSVP, sync.

Signs in with your accountVerified publisher: kalender-sync.de

https://app.kalender-sync.de/mcp

At a glance

Type: MCP server
Publisher: kalender-sync.de (verified by the MCP Registry)
Status: Signs in with your account
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http kalender-sync https://app.kalender-sync.de/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.kalender-sync]
url = "https://app.kalender-sync.de/mcp"

Gemini CLI

{"mcpServers":{"kalender-sync":{"httpUrl":"https://app.kalender-sync.de/mcp"}}}

Cursor

{"mcpServers":{"kalender-sync":{"url":"https://app.kalender-sync.de/mcp"}}}

VS Code

{"servers":{"kalender-sync":{"type":"http","url":"https://app.kalender-sync.de/mcp"}}}

Antigravity

agy mcp add kalender-sync https://app.kalender-sync.de/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"kalender-sync","server_url":"https://app.kalender-sync.de/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"kalender-sync","server_url":"https://app.kalender-sync.de/mcp"}

Signs in with your account: your agent app opens a sign-in page the first time you use it.

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