Calendly · AsyncAPI Specification

Calendly Webhook Events

Version 2.0.0

The Calendly Webhook API enables developers to receive real-time notifications when scheduling events occur in Calendly. By creating webhook subscriptions, applications can automatically receive data whenever invitees schedule, cancel, or reschedule meetings, or when routing form submissions are created. This eliminates the need for polling the API and allows for event-driven integrations that respond immediately to changes in scheduling activity. Webhook payloads are signed for verification and delivered via HTTP POST to the configured callback URL.

View Spec View on GitHub AppointmentsAutomationBookingCalendarsMeetingsSchedulingAsyncAPIWebhooksEvents

Channels

/webhook/invitee-created

publish onInviteeCreated

Invitee created event

Channel for invitee.created events. Triggered when a new invitee schedules a meeting through Calendly. Also triggered as part of a reschedule operation (the new booking). The payload includes the full invitee resource with event details, contact information, and answers to custom questions.

/webhook/invitee-canceled

publish onInviteeCanceled

Invitee canceled event

Channel for invitee.canceled events. Triggered when an existing scheduled event is canceled by either the host or the invitee. Also triggered as part of a reschedule operation (the old booking being canceled). The payload includes cancellation details and the reason if provided.

/webhook/routing-form-submission-created

publish onRoutingFormSubmissionCreated

Routing form submission created event

Channel for routing_form_submission.created events. Triggered when someone submits a routing form, regardless of whether they subsequently book a meeting. The payload includes the form submission with all questions and answers.

Messages

✉

InviteeCreatedEvent

Invitee Created

Delivered when a new invitee schedules a meeting through Calendly.

✉

InviteeCanceledEvent

Invitee Canceled

Delivered when an invitee or host cancels a scheduled meeting.

✉

RoutingFormSubmissionCreatedEvent

Routing Form Submission Created

Delivered when someone submits a routing form, whether or not they subsequently book a meeting.

Servers

https

production https://api.calendly.com

Calendly production server. Webhook subscriptions are managed via the REST API, and payloads are delivered to the subscriber-configured callback URL.