<p>Returns a list of task definition families that are registered to your account. This list includes task definition families that no longer have any <code>ACTIVE</code> task definition revisions.</p> <p>You can filter out task definition families that don't contain any <code>ACTIVE</code> task definition revisions by setting the <code>status</code> parameter to <code>ACTIVE</code>. You can also filter the results with the <code>familyPrefix</code> parameter.</p>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}

<p>Returns a list of task definition families that are registered to your account. This list includes task definition families that no longer have any <code>ACTIVE</code> task definition revisions.</p> <p>You can filter out task definition families that don't contain any <code>ACTIVE</code> task definition revisions by setting the <code>status</code> parameter to <code>ACTIVE</code>. You can also filter the results with the <code>familyPrefix</code> parameter.</p>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}