Notification format

When an event that a subscription is created for occurs, a notification is sent to the URL specified in the subscription. It will contain all data about the object as of the event time.

Notifications are sent in JSON format.

{
  "events":[
    {Event data 1},
    {Event data 2},
    {Event data N}
  ]
}

Data included in a notification depends on the event type.

If the secret_key parameter is specified when creating a subscription, an additional header — Toloka-Signature — appears in the event notification headers. It confirms that the requests were sent via the Toloka API. For more information, see Event authentication.

Example of the POOL_CLOSED notification body

{
  "uuid": "uuid-1",
  "event_time": "2020-02-14T12:22:58",
  "project_id": "project-1",
  "pool_id": "pool-1",
  "close_reason": "MANUAL",
  "webhook_subscription_id": "subscription-1",
  "type": "POOL_CLOSED"
}

Parameter	Overview
uuid	string Unique event ID.
event_time	string Time when the event occurs.
project_id	string ID of the project that the pool was created for.
pool_id	string ID of the pool that the subscription was created for.
close_reason	string Reason for closing the pool.
webhook_subscription_id	string ID of the subscription.
type	string Event type. Possible value: `POOL_CLOSED` — The pool is closed.

Example of the ASSIGNMENT_CREATED notification body

{
  "uuid": "uuid-1",
  "event_time": "2020-02-14T12:23:05",
  "project_id": "project-1",
  "pool_id": "pool-1",
  "task_suite_id": "task suite-1",
  "assignment_id": "assignment-1",
  "webhook_subscription_id": "subscription-1",
  "type": "ASSIGNMENT_CREATED"
}

Parameter	Overview
uuid	string Unique event ID.
event_time	string Time when the event occurs.
project_id	string ID of the project that the pool was created for.
pool_id	string ID of the pool that the subscription was created for.
task_suite_id	string ID of a task suite.
assignment_id	string ID of the task suite assignment to a Toloker.
webhook_subscription_id	string ID of the subscription.
type	string Event type. Acceptable values: `ASSIGNMENT_CREATED` — A task is created. `ASSIGNMENT_SUBMITTED` — A task is completed and waiting for acceptance by the requester. `ASSIGNMENT_SKIPPED` — A task was taken by the Toloker who then skipped it and won't return to it. `ASSIGNMENT_EXPIRED` — A task was taken by the Toloker who failed to complete it within the time allowed or rejected it before it expired. `ASSIGNMENT_APPROVED` — A task was completed by the Toloker and approved by the requester. `ASSIGNMENT_REJECTED` — A task was completed by the Toloker but rejected by the requester.

Example of the DYNAMIC_OVERLAP_COMPLETED notification body

{
  "uuid": "uuid-1",
  "event_time": "2020-02-14T12:23:05",
  "project_id": "project-1",
  "pool_id": "pool-2",
  "task_id": "task-1",
  "confidence": 0.155,
  "webhook_subscription_id": "subscription-1",
  "type": "DYNAMIC_OVERLAP_COMPLETED",
  "assignment_ids": ["assignment-1", "assignment-2"],
  "output_values": {
    "field_one": "value-1"
  }
}

Parameter	Overview
uuid	string Unique event ID.
event_time	string Time when the event occurs.
project_id	string ID of the project that the pool was created for.
pool_id	string ID of the pool that the subscription was created for.
task_id	string Task ID.
confidence	integer Confidence in the aggregate response.
webhook_subscription_id	string ID of the subscription.
type	string Event type. Possible value: `DYNAMIC_OVERLAP_COMPLETED` — An aggregated score appeared after dynamic overlap.
assignment_ids[]	array of strings IDs of task suite assignments to Tolokers.
output_values[]	array of objects Output data fields that contain the task text (`field_one`) and response.