---
title: "Changes to POST /evaluate/v1/boolean"
method: POST
path: "/evaluate/v1/boolean"
---

# Changes to POST /evaluate/v1/boolean

`POST /evaluate/v1/boolean`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 3 of 5 revisions.

- **2026-07-13** `6fe4caf26f13`: 1 info
- **2024-08-08** `594afc3dbe2e`: 1 breaking, 4 warning
- **2024-08-07** `291b2f802c58`: 1 breaking, 1 warning, 4 info

## Changes

- **2026-07-13** `6fe4caf26f13`: 1 info
  - added the optional property `segmentKeys` to the response with the `200` status
- **2024-08-08** `594afc3dbe2e`: 1 breaking, 4 warning
  - the `reason` response's property type changed from `integer` to `string` for status `200`
  - added the new `DEFAULT_EVALUATION_REASON` enum value to the `reason` response property for the response status `200`
  - added the new `FLAG_DISABLED_EVALUATION_REASON` enum value to the `reason` response property for the response status `200`
  - added the new `MATCH_EVALUATION_REASON` enum value to the `reason` response property for the response status `200`
  - added the new `UNKNOWN_EVALUATION_REASON` enum value to the `reason` response property for the response status `200`
- **2024-08-07** `291b2f802c58`: 1 breaking, 1 warning, 4 info
  - the `reason` response's property type changed from `string` to `integer` for status `200`
  - removed the optional property `segmentKeys` from the response with the `200` status
  - removed the `DEFAULT_EVALUATION_REASON` enum value from the `reason` response property for the response status `200`
  - removed the `FLAG_DISABLED_EVALUATION_REASON` enum value from the `reason` response property for the response status `200`
  - removed the `MATCH_EVALUATION_REASON` enum value from the `reason` response property for the response status `200`
  - removed the `UNKNOWN_EVALUATION_REASON` enum value from the `reason` response property for the response status `200`

---

[Operation](https://skmtc.dev/flipt-io/apis/flipt-api/docs/evaluate/v1/boolean/post.md) - [API](https://skmtc.dev/flipt-io/apis/flipt-api.md) - [Page](https://skmtc.dev/flipt-io/apis/flipt-api/changes/evaluate/v1/boolean/post)