---
title: "Changes to Create an annotation configuration"
method: POST
path: "/v1/annotation_configs"
---

# Changes to Create an annotation configuration

`POST /v1/annotation_configs`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 3 of 71 revisions.

- **2026-07-17** `5b062a93db67` — 1 info
- **2026-05-21** `ea31306c1333` — 8 info
- **2026-04-29** `c81391216eb5` — 8 warning

## Changes

- **2026-07-17** `5b062a93db67` — 1 info
  - api operation id `create_annotation_config_v1_annotation_configs_post` removed and replaced with `createAnnotationConfig`
- **2026-05-21** `ea31306c1333` — 8 info
  - added the new optional request property `oneOf[subschema #3: FreeformAnnotationConfigData]/lower_bound`
  - added the new optional request property `oneOf[subschema #3: FreeformAnnotationConfigData]/optimization_direction`
  - added the new optional request property `oneOf[subschema #3: FreeformAnnotationConfigData]/threshold`
  - added the new optional request property `oneOf[subschema #3: FreeformAnnotationConfigData]/upper_bound`
  - added the optional property `data/oneOf[subschema #3: FreeformAnnotationConfig]/lower_bound` to the response with the `200` status
  - added the optional property `data/oneOf[subschema #3: FreeformAnnotationConfig]/optimization_direction` to the response with the `200` status
  - added the optional property `data/oneOf[subschema #3: FreeformAnnotationConfig]/threshold` to the response with the `200` status
  - added the optional property `data/oneOf[subschema #3: FreeformAnnotationConfig]/upper_bound` to the response with the `200` status
- **2026-04-29** `c81391216eb5` — 8 warning
  - removed the request property `oneOf[subschema #3: FreeformAnnotationConfigData]/lower_bound`
  - removed the request property `oneOf[subschema #3: FreeformAnnotationConfigData]/optimization_direction`
  - removed the request property `oneOf[subschema #3: FreeformAnnotationConfigData]/threshold`
  - removed the request property `oneOf[subschema #3: FreeformAnnotationConfigData]/upper_bound`
  - removed the optional property `data/oneOf[subschema #3: FreeformAnnotationConfig]/lower_bound` from the response with the `200` status
  - removed the optional property `data/oneOf[subschema #3: FreeformAnnotationConfig]/optimization_direction` from the response with the `200` status
  - removed the optional property `data/oneOf[subschema #3: FreeformAnnotationConfig]/threshold` from the response with the `200` status
  - removed the optional property `data/oneOf[subschema #3: FreeformAnnotationConfig]/upper_bound` from the response with the `200` status

---

[Operation](https://skmtc.dev/arize-ai/apis/arize-phoenix-rest-api/docs/v1/annotation_configs/post.md) · [API](https://skmtc.dev/arize-ai/apis/arize-phoenix-rest-api.md) · [Page](https://skmtc.dev/arize-ai/apis/arize-phoenix-rest-api/changes/v1/annotation_configs/post)