Requires the runtime declared in the upstream repo — check the README before running. Claude Desktop only speaks stdio locally; HTTP servers are wrapped via npx mcp-remote automatically. Paste the config below, then follow the reload step to register CalendarMCP.
~/Library/Application Support/Claude/claude_desktop_config.json%APPDATA%\Claude\claude_desktop_config.json~/.config/Claude/claude_desktop_config.json{
"mcpServers": {
"calendar": {
"command": "npx",
"args": [
"@modelcontextprotocol/server-fetch",
"https://calendarmcp.ai/api/mcp"
],
"env": {
"MCP_AUTH_HEADER": "Authorization: Bearer YOUR_CALENDARMCP_API_KEY"
}
}
}
}