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Calendly Webhook API

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. This eliminates the need for polling the API and allows for event-driven integrations that respond immediately to changes in scheduling activity.

Calendly Webhook API is one of 14 APIs that Calendly publishes on the APIs.io network, described by an AsyncAPI event-driven specification.

Tagged areas include Events, Notifications, Scheduling, and Webhooks. The published artifact set on APIs.io includes API documentation and an AsyncAPI specification.

This event API exposes 3 operations across 3 channels, and defines 7 schemas. It is described by AsyncAPI 2.6.0, at version 2.0.0.

The API connects through a single server, https://api.calendly.com (https).

3 operations 3 channels 7 schemas

Metadata

The identity and technical contract details declared by the specification.

Specification
AsyncAPI 2.6.0
API Version
2.0.0
Base URL
https://api.calendly.com
Resource Areas
1

Channels & Operations 3

Across 3 channels, the API surfaces 3 operations. Each is listed below with its action, channel, parameters, and response codes.

Channels 3
PUB
/webhook/invitee-created
Invitee created event
onInviteeCreated body
PUB
/webhook/invitee-canceled
Invitee canceled event
onInviteeCanceled body
PUB
/webhook/routing-form-submission-created
Routing form submission created event
onRoutingFormSubmissionCreated body

Messages & Schemas 7

The contract defines 7 schemas that model the data carried by its messages. The most detailed are InviteePayload (21 properties), RoutingFormSubmissionPayload (8 properties), RoutingFormWebhookPayload (4 properties), WebhookPayload (4 properties). Each schema is shown below with its type and property counts.

InviteeCreatedEvent
message
Delivered when a new invitee schedules a meeting through Calendly.
InviteeCanceledEvent
message
Delivered when an invitee or host cancels a scheduled meeting.
RoutingFormSubmissionCreatedEvent
message
Delivered when someone submits a routing form, whether or not they subsequently book a meeting.
WebhookPayload
object
The top-level webhook payload delivered to the subscriber callback URL for invitee events.
4 properties
RoutingFormWebhookPayload
object
The top-level webhook payload delivered for routing form submission events.
4 properties
InviteePayload
object
The invitee data included in webhook payloads for invitee.created and invitee.canceled events.
21 properties
RoutingFormSubmissionPayload
object
The routing form submission data included in webhook payloads for routingformsubmission.created events.
8 properties

Specification

The full machine-readable AsyncAPI contract behind this narrative.

Source

calendly-webhook-api-asyncapi.yml Raw ↑

Other APIs Calendly publishes across the network.

Calendly Embed API
Calendly Activity Log API
Calendly Availability API
Calendly Data Compliance API
Calendly Event Types API
Calendly Groups API
Calendly Invitees API
Calendly Organizations API
Calendly Routing Forms API
Calendly Scheduled Events API
Calendly Shares API
Calendly Users API