---
title: "Stream Task Group Events"
method: GET
path: "/v1beta/tasks/groups/{taskgroup_id}/events"
tags: ["Tasks (Beta)"]
---

# Stream Task Group Events

`GET /v1beta/tasks/groups/{taskgroup_id}/events`

Streams events from a TaskGroup: status updates and run completions.
 
The connection will remain open for up to an hour as long as at least one run in the
group is still active.

## Path parameters

- `taskgroup_id` string, required

## Query parameters

- `last_event_id` string, nullable
- `timeout` number, nullable

## Response `200`

Successful Response

## Other responses

- `404` — TaskGroup not found
- `422` — Validation Error

## Changes

- **2026-03-09** `970b780e8649` — 2 info
  - added the optional property `oneOf[subschema #2: TaskRunEvent]/input/anyOf[subschema #1: BetaTaskRunInput]/previous_interaction_id` to the response with the `200` status
  - added the required property `oneOf[subschema #2: TaskRunEvent]/run/interaction_id` to the response with the `200` status
- **2026-01-13** `105d778ad64d` — 1 breaking, 38 info
  - the `error` response's property type/format changed from ``/`` to `object`/`` for status `404`
  - added the optional property `error/detail` to the response with the `404` status
  - added the optional property `oneOf[subschema #2: TaskRunEvent]/input/anyOf[subschema #1: BetaTaskRunInput]/source_policy/anyOf[subschema #1: SourcePolicy]/after_date` to the response with the `200` status
  - added the optional property `oneOf[subschema #2: TaskRunEvent]/run/error` to the response with the `200` status
  - …35 more
- **2025-11-06** `a2d634b57a8e` — 2 info
  - api tag `Tasks (Beta)` added
  - api tag `Task API (Beta)` removed
- **2025-10-21** `e853fc79f3b4` — 1 breaking
  - the `` response property const value `task_run.status` was removed for the status `200`
- …earlier changes not shown

[Full history](https://skmtc.dev/parallel-web/apis/parallel-api/changes/v1beta/tasks/groups/:taskgroup_id/events/get.md)

---

[API](https://skmtc.dev/parallel-web/apis/parallel-api.md) · [All operations](https://skmtc.dev/parallel-web/apis/parallel-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/parallel-web/parallel-api/revisions/970b780e8649/schema)