Get available slots

Get available slots

Returns the open start times of an event type between two dates, grouped by day.

Pass start and end, and name the event type by eventTypeId or by eventTypeSlug plus username (teamSlug for a team event). Set timeZone to get the times in the prospect's zone; the default is UTC. Offer a few slots, then book the chosen one with create_booking. Send cal-api-version: 2024-09-04.

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": { "cal-com": { "url": "https://mcp.cal.com/mcp" } } }

Call the MCP tool get_availability.

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

CLI (official)

Install the command, then confirm it runs.

npm install -g @calcom/cli
calcom --version

Run calcom slots available.

Set $CAL_API_KEY in your environment first (get a key: https://app.cal.com/settings/developer/api-keys).

API (official)

• Base URL: https://api.cal.com
• Endpoint: GET /v2/slots
• Auth: send the header Authorization: Bearer $CAL_API_KEY
• Get a key: https://app.cal.com/settings/developer/api-keys
• Docs: https://cal.com/docs/api-reference/v2/introduction

Before doing anything else, make one read-only call to confirm access.

Rules

• Ask the user before anything that sends messages, costs money, or changes data.
• Never print API keys.