---
title: "Changes to POST /api/v1/experiments/{experimentId}/_start"
method: POST
path: "/api/v1/experiments/{experimentId}/_start"
---

# Changes to POST /api/v1/experiments/{experimentId}/_start

`POST /api/v1/experiments/{experimentId}/_start`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-10-30** `4fd8e917d458`: 4 warning, 2 info

## Changes

- **2026-10-30** `4fd8e917d458`: 4 warning, 2 info
  - added the new `AI` enum value to the `entity/goals/primary/metric/feature` response property for the response status `default` (media type: application/json)
  - added the new `AI` enum value to the `entity/goals/primary/metric/feature` response property for the response status `default` (media type: application/javascript)
  - added the new `EXPERIMENTS` enum value to the `entity/goals/primary/metric/feature` response property for the response status `default` (media type: application/json)
  - added the new `EXPERIMENTS` enum value to the `entity/goals/primary/metric/feature` response property for the response status `default` (media type: application/javascript)
  - added the optional property `entity/createdByUserName` to the response with the `default` status (media type: application/json)
  - added the optional property `entity/createdByUserName` to the response with the `default` status (media type: application/javascript)

---

[Operation](https://skmtc.dev/anzworldline-solutions/apis/dotcms-rest-api/docs/api/v1/experiments/:experimentId/_start/post.md) - [API](https://skmtc.dev/anzworldline-solutions/apis/dotcms-rest-api.md) - [Page](https://skmtc.dev/anzworldline-solutions/apis/dotcms-rest-api/changes/api/v1/experiments/:experimentId/_start/post)