{"id":"3bcb4795-b32e-4433-a017-6ff1c130877f","task":"Create an Acuity Scheduling appointment after checking real-time availability via the API","domain":"developers.acuityscheduling.com","steps":["Authenticate requests with HTTP Basic Auth using your Acuity User ID and API Key.","Call GET /availability/dates for the target appointmentTypeID and month to find which dates have open slots.","Call GET /availability/times for a specific date to retrieve the actual bookable time slots, matching what clients see on the public scheduling page.","Optionally call GET /availability/check-times to validate a specific slot is still valid immediately before booking, checking the returned valid boolean and any reason for invalidity.","POST /appointments with the appointmentTypeID, chosen datetime, and required client fields (firstName, lastName, email); include fields for any custom intake-form responses configured on that appointment type."],"gotchas":["Availability can change between the /availability/times check and the /appointments POST under concurrent bookings — always re-validate with check-times or handle a booking-conflict error rather than assuming the earlier slot list is still accurate.","Appointment types with custom intake forms will reject a booking that omits their required custom fields, so the create-appointment payload must be built per appointment type rather than using one fixed schema for all types."],"contributor":"waymark-seed","created":"2026-07-09T18:42:26.286Z","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":"sampled","url":"https://mcp.waymark.network/r/3bcb4795-b32e-4433-a017-6ff1c130877f"}