---
title: "List dataset columns"
method: GET
path: "/v1/projects/{projectSlug}/datasets/{datasetSlug}/columns"
tags: ["Datasets"]
---

# List dataset columns

`GET /v1/projects/{projectSlug}/datasets/{datasetSlug}/columns`

Returns the ordered active column schema — the built-in columns plus any custom columns. Pass `includeRemoved=true` to also return soft-removed columns (so they can be restored).

## Path parameters

- `projectSlug` string, required — Project slug (human-readable identifier)
- `datasetSlug` string, required — Dataset slug (human-readable identifier within the project).

## Query parameters

- `includeRemoved` 'true' | 'false' — When `true`, also returns soft-removed columns (each carrying `removed: true`). Defaults to `false`.

## Response `200`

Column schema

- DatasetColumnsList
  - `columns` DatasetColumn[], required — Ordered column schema (built-in + custom).
    - `identifier` string, required — Stable, immutable column id. The key under which custom values are stored on each row.
    - `name` string, required — Display name. Editable; the identifier never changes.
    - `source` union, required — Where the column's values come from.
      - object
        - `kind` 'builtin', required — A built-in field (`input`, `output`, `expectedOutput`, or `metadata`).
        - `field` 'input' | 'output' | 'expectedOutput' | 'metadata', required — Which built-in field this column projects.
      - object
        - `kind` 'custom', required — A user-added column; its values live under the row's `custom` store.
    - `removed` boolean — `true` for soft-removed columns (only returned when listing with `includeRemoved`). Removed columns are excluded from rows and the default schema, but keep their data and can be restored.

## Other responses

- `400` — Validation error
- `401` — Unauthorized
- `404` — Not found

---

[API](https://skmtc.net/latitude-dev/apis/latitude.md) · [All operations](https://skmtc.net/latitude-dev/apis/latitude/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/latitude-dev/latitude/versions/6a8789c59a5c/schema)