curl --request GET \
  --url https://api.retellai.com/v2/list-batch-tests \
  --header 'Authorization: Bearer <token>'

{
  "pagination_key": "<string>",
  "has_more": true,
  "items": [
    {
      "test_case_batch_job_id": "<string>",
      "status": "in_progress",
      "response_engine": {
        "type": "retell-llm",
        "llm_id": "<string>",
        "version": 0
      },
      "pass_count": 1,
      "fail_count": 1,
      "error_count": 1,
      "total_count": 1,
      "creation_timestamp": 123,
      "user_modified_timestamp": 123
    }
  ]
}