---
title: "Changes to Engine Manifest"
method: GET
path: "/engine_manifest"
---

# Changes to Engine Manifest

`GET /engine_manifest`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 16 of 36 revisions.

- **2025-06-17** `defa0e760ef0` — 1 info
- **2025-03-02** `d8b6a60f88af` — 1 info
- **2025-01-03** `b7afc41080b3` — 1 breaking, 13 info
- **2024-10-05** `e86c0159e1bd` — 1 info
- **2024-06-28** `3b94f9a50fd2` — 1 info
- **2024-01-31** `2aeffeaee726` — 1 info
- **2024-01-22** `ba5021ec9a6d` — 1 info
- **2024-01-20** `2a8c9cc0823a` — 1 breaking
- **2024-01-17** `1bed97d41915` — 1 info
- **2023-06-20** `66fb5349b1cd` — 2 warning, 2 info
- **2023-01-14** `e1a788bdc836` — 1 info
- **2022-12-04** `258eec6a8c8c` — 1 info
- **2022-09-03** `0ed698591445` — 1 info
- **2022-08-14** `b11099ae3ad8` — 1 breaking, 4 info
- **2022-05-30** `66092849a30b` — 1 info
- **2021-08-01** `54e3a135bccf` — 1 breaking

## Changes

- **2025-06-17** `defa0e760ef0` — 1 info
  - added the optional property `supported_features/apply_katakana_english` to the response with the `200` status
- **2025-03-02** `d8b6a60f88af` — 1 info
  - api operation id `engine_manifest_engine_manifest_get` removed and replaced with `engine_manifest`
- **2025-01-03** `b7afc41080b3` — 1 breaking, 13 info
  - the `supported_features` response's property type/format changed from ``/`` to `object`/`` for status `200`
  - added the optional property `supported_features/adjust_pause_length` to the response with the `200` status
  - added the optional property `supported_features/manage_library` to the response with the `200` status
  - added the optional property `supported_features/return_resource_url` to the response with the `200` status
  - added the optional property `supported_features/sing` to the response with the `200` status
  - removed `#/components/schemas/SupportedFeatures` from the `supported_features` response property `allOf` list for the response status `200`
  - added the required property `supported_features/adjust_intonation_scale` to the response with the `200` status
  - added the required property `supported_features/adjust_mora_pitch` to the response with the `200` status
  - added the required property `supported_features/adjust_phoneme_length` to the response with the `200` status
  - added the required property `supported_features/adjust_pitch_scale` to the response with the `200` status
  - added the required property `supported_features/adjust_speed_scale` to the response with the `200` status
  - added the required property `supported_features/adjust_volume_scale` to the response with the `200` status
  - added the required property `supported_features/interrogative_upspeak` to the response with the `200` status
  - added the required property `supported_features/synthesis_morphing` to the response with the `200` status
- **2024-10-05** `e86c0159e1bd` — 1 info
  - added the optional property `supported_features/allOf[subschema #1: SupportedFeatures]/adjust_pause_length` to the response with the `200` status
- **2024-06-28** `3b94f9a50fd2` — 1 info
  - added the optional property `supported_features/allOf[subschema #1: SupportedFeatures]/return_resource_url` to the response with the `200` status
- **2024-01-31** `2aeffeaee726` — 1 info
  - added the optional property `supported_features/allOf[subschema #1: SupportedFeatures]/sing` to the response with the `200` status
- **2024-01-22** `ba5021ec9a6d` — 1 info
  - added the required property `frame_rate` to the response with the `200` status
- **2024-01-20** `2a8c9cc0823a` — 1 breaking
  - removed the required property `frame_rate` from the response with the `200` status
- **2024-01-17** `1bed97d41915` — 1 info
  - added the required property `frame_rate` to the response with the `200` status
- **2023-06-20** `66fb5349b1cd` — 2 warning, 2 info
  - removed the optional property `downloadable_libraries_path` from the response with the `200` status
  - removed the optional property `downloadable_libraries_url` from the response with the `200` status
  - added the optional property `supported_features/allOf[subschema #1: SupportedFeatures]/manage_library` to the response with the `200` status
  - added the optional property `supported_vvlib_manifest_version` to the response with the `200` status
- **2023-01-14** `e1a788bdc836` — 1 info
  - added the required property `brand_name` to the response with the `200` status
- **2022-12-04** `258eec6a8c8c` — 1 info
  - added the required property `supported_features/allOf[subschema #1: SupportedFeatures]/synthesis_morphing` to the response with the `200` status
- **2022-09-03** `0ed698591445` — 1 info
  - added the required property `supported_features` to the response with the `200` status
- **2022-08-14** `b11099ae3ad8` — 1 breaking, 4 info
  - the `update_infos/items/descriptions` response's property type/format changed from `string`/`` to `array`/`` for status `200`
  - added the optional property `downloadable_libraries_path` to the response with the `200` status
  - added the optional property `downloadable_libraries_url` to the response with the `200` status
  - added the required property `url` to the response with the `200` status
  - added the required property `uuid` to the response with the `200` status
- **2022-05-30** `66092849a30b` — 1 info
  - endpoint added
- **2021-08-01** `54e3a135bccf` — 1 breaking
  - api path removed without deprecation

---

[Operation](https://skmtc.dev/voicevox/apis/voicevox-engine-oss/docs/engine_manifest/get.md) · [API](https://skmtc.dev/voicevox/apis/voicevox-engine-oss.md) · [Page](https://skmtc.dev/voicevox/apis/voicevox-engine-oss/changes/engine_manifest/get)