---
title: "Changes to Experiments Available Columns"
method: POST
path: "/projects/{project_id}/experiments/available_columns"
---

# Changes to Experiments Available Columns

`POST /projects/{project_id}/experiments/available_columns`

> Every recorded change to this operation, newest first.
> 35 revisions in range; 2 not diffed.

## Timeline

Changed in 3 of 35 revisions.

- **2026-10-03** `fede84842199`: 1 warning, 1 info
- **2026-09-05** `ffb734d6931b`: 1 warning
- **2026-07-26** `05003e7835a2`: 1 info

## Changes

- **2026-10-03** `fede84842199`: 1 warning, 1 info
  - added the new `retrieved_chunk_list_boolean` enum value to the `columns/items/data_type/anyOf[subschema #1: DataType]/` response property for the response status `200`
  - added the optional property `columns/items/threshold` to the response with the `200` status
- **2026-09-05** `ffb734d6931b`: 1 warning
  - added the new `http` enum value to the `columns/items/applicable_types/items/` response property for the response status `200`
- **2026-07-26** `05003e7835a2`: 1 info
  - the endpoint scheme security `ClassicAPIKeyHeader` was added to the API

---

[Operation](https://skmtc.dev/galileo/apis/galileo-api-server/docs/projects/:project_id/experiments/available_columns/post.md) - [API](https://skmtc.dev/galileo/apis/galileo-api-server.md) - [Page](https://skmtc.dev/galileo/apis/galileo-api-server/changes/projects/:project_id/experiments/available_columns/post)