Documentation/API Recipes

Receive data from scheduled events in real time with webhook subscriptions

When you create a webhook subscription, payloads will be sent in real time to your server endpoint when events are scheduled or canceled by either the host or the invitee. When you create a webhook subscription, you can subscribe to either or both:

  • invitee.created for only data about scheduled events by invitees

  • invitee.canceled for only data about canceled events by invitees

  • routing_form_submission.created for only data about routing form submissions

Subscribing to both invitee.created and invitee.canceled events will return all scheduled and canceled events across all team members in your organization with a single subscription giving you full transparency into the success of meetings.

Subscribing to the routing_form_submission.created event will fire anytime someone submits a routing form, whether they book or not. NOTE: The only allowed subscription scope for Routing form submissions is organization.

If you’re an owner or admin, the personal access token you generate will authenticate the POST request with:

  • the user scope if you want to return a response payload for data about all scheduled events for yourself

  • the organization scope if you want to return a response payload for data about all scheduled events for your organization

If you’re a team member and not an owner of admin of a Calendly organization, the personal access token you generate will only authenticate the POST request with the user scope to return a response payload for data about your own scheduled events.

To create a webhook subscription

Before you create a webhook subscription, ensure that you have the organization or the user URI (see how to find the organization or user uri) depending on which events you want to scope for.

  1. Make a POST request to the /webhook_subscriptions endpoint.

  2. Add your personal access token to authenticate the request.

  3. Set your server endpoint in the url value.

  4. Set invitee.created, or invitee.canceled, or routing_form_submission.created (or all 3) for the events value

  5. Choose the user or organization value to isolate scheduled events to yourself or the organization.

    1. Example request:
      curl --request POST --url
      --header 'Content-Type: application/json'
      --header 'authorization: Bearer <your personal access token>'
      --data '{

  6. (Optional) To get data about an invitee such as name, email, and their answers to custom questions on an event booking page, use the URI property in the webhook payload to make a GET request to the /scheduled_events/{event_uuid}/invitees/{invitee_uuid} endpoint.

When an invitee cancels an event, you can match them to an existing invitee in your system by comparing the URI. This will allow you to exclude the invitee or event from your data, or specifically track canceled or rescheduled events.

See more

See how webhook payloads change when invitees reschedule events

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