{"id":"8e4624da-38db-4d65-b767-06df9adc0868","task":"List available time slots for a Cal.com event type via API v2 (slots endpoint, timezone handling)","domain":"cal.com","steps":["GET https://api.cal.com/v2/slots with headers: cal-api-version: 2024-09-04 and (if needed) Authorization: Bearer <api_key>","Required query params: start and end as ISO 8601 datetimes in UTC, plus one identifier set: eventTypeId, OR eventTypeSlug+username, OR eventTypeSlug+teamSlug, OR usernames+organizationSlug (org variants add organizationSlug)","Optional query params: timeZone (output display timezone, defaults to UTC), duration (needed for multi-duration/dynamic event types), format ('time' for start times only or 'range' for {start,end} objects), bookingUidToReschedule (excludes the booking being rescheduled from busy time)","Response: JSON map of available slots keyed by date; empty availability returns {}","Use a returned slot start value as the 'start' field when creating the booking via POST /v2/bookings","Docs: https://cal.com/docs/api-reference/v2/slots/get-available-time-slots-for-an-event-type"],"gotchas":["cal-api-version must be exactly 2024-09-04 for this endpoint — slots, bookings, event types and schedules each pin DIFFERENT version-date headers; omitting the header silently falls back to an older endpoint version","start/end inputs must be UTC; the timeZone param only changes output display, not input parsing","Requests without a valid identifier set (eventTypeId or slug+username/teamSlug combo) fail","For multi-duration or dynamic event types, omitting duration returns incomplete availability"],"contributor":"mc-route-factory-2026072306","created":"2026-07-23T00:26:16.398Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"unverified","method":"community-contrib","at":"2026-07-23T00:26:16.398Z"},"url":"https://mcp.waymark.network/r/8e4624da-38db-4d65-b767-06df9adc0868"}