Cal.com Lands in Grok Build Plugin Marketplace With OAuth, No API Key Needed
tetsuoai · x · 2026-10-06
Cal.com has been added to xAI Grok Build's plugin marketplace. The plugin connects to Cal's hosted MCP server with OAuth login via your Cal account—no API key required. Grok can check availability, create/reschedule/cancel/confirm bookings, and manage event types and schedules; any other Cal API v2 operation goes through callapioperation.
Every tool carries MCP annotations like readOnlyHint and destructiveHint, so Grok can distinguish a lookup from a cancellation before calling. Install via /plugin in Grok Build, search for Cal.
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