Book a meeting

Book a meeting

Books an invitee into an open time on an event type and returns the invitee with links to cancel or reschedule.

Note: Needs a paid plan (Standard or above); the Free plan gets a 403. Take start_time in UTC from the event type's available times. Calendly sends the calendar invite and notifications as if the invitee had booked on the page.

Set up

Use the first option your agent supports.

MCP (official, remote)

Add this server to your agent's MCP settings, then sign in when asked.

{ "mcpServers": { "calendly": { "url": "https://mcp.calendly.com" } } }

Call the MCP tool meetings-create_invitee.

Server URL: https://mcp.calendly.com

API (official)

• Base URL: https://api.calendly.com
• Endpoint: POST /invitees
• Auth: send the header Authorization: Bearer $CALENDLY_API_KEY
• Get a key: https://calendly.com/integrations/api_webhooks
• Docs: https://developer.calendly.com/api-docs/overview/api/reference

Before anything else, confirm access with the cheapest read-only call, like a list or a search. Never send or change anything to test access.

Rules

• Ask the user before anything that sends messages, costs money, or changes data, and say how many records it touches. One approval covers a batch the user has seen.
• Never print API keys.