---
title: "Preview Dataset"
method: POST
path: "/v2/datasets/{dataset_id}/preview"
tags: ["datasets"]
---

# Preview Dataset

`POST /v2/datasets/{dataset_id}/preview`

## Path parameters

- `dataset_id` string, uuid4, required

## Query parameters

- `starting_token` integer
- `limit` integer

## Request body

- PreviewDatasetRequest
  - `column_mapping` ColumnMapping
    - `input` union
      - ColumnMappingConfig
        - `columns` string[], required
        - `flatten` boolean
      - string[]
    - `output` union
      - ColumnMappingConfig
        - `columns` string[], required
        - `flatten` boolean
      - string[]
    - `generated_output` union
      - ColumnMappingConfig
        - `columns` string[], required
        - `flatten` boolean
      - string[]
    - `metadata` union
      - ColumnMappingConfig
        - `columns` string[], required
        - `flatten` boolean
      - string[]
    - `mgt` object, nullable

## Response `200`

Successful Response

- DatasetContent
  - `starting_token` integer
  - `limit` integer
  - `paginated` boolean
  - `next_starting_token` integer, nullable
  - `column_names` string[]
  - `warning_message` string, nullable
  - `rows` DatasetRow[]
    - `row_id` string, uuid4, required
    - `index` integer, required
    - `values` union[], required
      - union
        - string
        - integer
        - number
        - object
    - `values_dict` object, required
    - `metadata` DatasetRowMetadata, required
      - `created_in_version` integer, required
      - `created_at` string, date-time, required
      - `created_by_user` UserInfo, required — A user's basic information, used for display purposes.
        - `id` string, uuid4, required
        - `email` string, required
        - `first_name` string, nullable
        - `last_name` string, nullable
      - `updated_in_version` integer, required
      - `updated_at` string, date-time, required
      - `updated_by_user` UserInfo, required — A user's basic information, used for display purposes.
        - `id` string, uuid4, required
        - `email` string, required
        - `first_name` string, nullable
        - `last_name` string, nullable

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/galileo/apis/galileo-api-server.md) · [All operations](https://skmtc.net/galileo/apis/galileo-api-server/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/galileo/galileo-api-server/versions/933e8c8e6366/schema)