---
title: "Get dataset item by id"
method: GET
path: "/v1/private/datasets/items/{itemId}"
tags: ["Datasets"]
---

# Get dataset item by id

`GET /v1/private/datasets/items/{itemId}`

Get dataset item by id

## Path parameters

- `itemId` string, uuid, required

## Response `200`

Dataset item resource

- DatasetItemPublic
  - `id` string, uuid — Stable item identifier. On write, used as the upsert key. If omitted, a new ID is generated. Remains the same across dataset versions
  - `dataset_item_id` string, uuid — Deprecated. Always equals 'id'. Retained for backward compatibility and will be removed in a future version
  - `trace_id` string, uuid
  - `span_id` string, uuid
  - `source` 'manual' | 'trace' | 'span' | 'sdk', required
  - `data` JsonNode, required
  - `description` string
  - `tags` string[]
  - `evaluators` EvaluatorItemPublic[]
    - `name` string, required
    - `type` 'llm_judge' | 'code_metric', required
    - `config` JsonNodePublic, required
  - `execution_policy` ExecutionPolicyPublic — Default execution policy for items in this version
    - `runs_per_item` integer
    - `pass_threshold` integer
  - `experiment_items` ExperimentItemPublic[]
    - `id` string, uuid
    - `experiment_id` string, uuid, required
    - `dataset_item_id` string, uuid, required
    - `trace_id` string, uuid, required
    - `project_id` string, uuid
    - `created_at` string, date-time
    - `last_updated_at` string, date-time
    - `created_by` string
    - `last_updated_by` string
    - `trace_visibility_mode` 'default' | 'hidden'
  - `run_summaries_by_experiment` object
  - `dataset_id` string, uuid
  - `created_at` string, date-time
  - `last_updated_at` string, date-time
  - `created_by` string
  - `last_updated_by` string

---

[API](https://skmtc.net/comet-ml/apis/opik-rest-api.md) · [All operations](https://skmtc.net/comet-ml/apis/opik-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/comet-ml/opik-rest-api/versions/4ed2fbc97cc3/schema)