# App Callbacks

POST 

This type of callback URL is set up at the API app level. API apps are used to identify a partner integration and configure embedded flows ([embedded signing](/docs/walkthroughs/embedded-signing), [embedded requesting](/docs/walkthroughs/embedded-requesting), and [embedded templates](/docs/walkthroughs/embedded-templates)) and [OAuth providers](/docs/guides/o-auth/overview)
        
All events that involve signature requests created by an API app are reported to this URL. The event will include a `client_id` field to indicate which app the event is being reported for, which allows multiple API apps to share the same callback URL.

You can manage your apps and their callbacks from the [settings page](https://app.hellosign.com/home/myAccount#api).

Reference: https://developer.hellosign.com/api/events/api-app-create-event-callback

## OpenAPI 3.1 Webhook Specification

```yaml
openapi: 3.1.1
info:
  title: App Callbacks
  version: subpackage_events.apiAppCreateEventCallback
webhooks:
  api-app-create-event-callback:
    post:
      operationId: api-app-create-event-callback
      summary: App Callbacks
      description: >-
        This type of callback URL is set up at the API app level. API apps are
        used to identify a partner integration and configure embedded flows
        ([embedded signing](/docs/walkthroughs/embedded-signing), [embedded
        requesting](/docs/walkthroughs/embedded-requesting), and [embedded
        templates](/docs/walkthroughs/embedded-templates)) and [OAuth
        providers](/docs/guides/o-auth/overview)
                
        All events that involve signature requests created by an API app are
        reported to this URL. The event will include a `client_id` field to
        indicate which app the event is being reported for, which allows
        multiple API apps to share the same callback URL.


        You can manage your apps and their callbacks from the [settings
        page](https://app.hellosign.com/home/myAccount#api).
      tags:
        - subpackage_events
      parameters: []
      responses:
        '200':
          description: Webhook received successfully
      requestBody:
        description: >-
          **API App Callback Payloads --**

          Events that are reported at the API App level through the *Event
          callback URL* defined in your [API
          settings](https://app.hellosign.com/home/myAccount#api) for a specific
          app. The *Event callback URL* can also be updated by calling [Update
          API App](/api/reference/operation/apiAppUpdate) and passing a
          `callback_url`.
        content:
          application/json:
            schema:
              type: object
              properties: {}
              required: []

```