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

# Changes to Engine Manifest

`GET /engine_manifest`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 17 of 50 revisions.

- **2026-07-17** `1d935a3e31b8`: 1 info
- **2025-03-02** `d8b6a60f88af`: 1 info
- **2024-10-29** `54501f4624fd`: 1 breaking, 13 info
- **2024-10-05** `e86c0159e1bd`: 9 breaking, 4 warning, 1 info
- **2024-09-26** `179894d155aa`: 1 breaking, 13 info
- **2024-07-20** `eb97301b5bb3`: 8 info
- **2024-07-09** `1d0fcadb80c5`: 5 breaking, 1 warning, 1 info
- **2024-06-28** `3b94f9a50fd2`: 7 info
- **2024-05-09** `fd13ee3ebb92`: 1 warning, 1 info
- **2024-05-02** `7d46d11815c2`: 4 breaking, 1 warning, 2 info
- **2024-04-26** `907e5011a1aa`: 1 warning, 6 info
- **2024-03-22** `20d1151e28cd`: 1 warning, 1 info
- **2024-03-22** `ef4da11d01e0`: 5 breaking, 1 info
- **2024-01-31** `2aeffeaee726`: 1 info
- **2024-01-22** `ba5021ec9a6d`: 1 info
- **2024-01-20** `2a8c9cc0823a`: 1 breaking
- **2024-01-17** `1bed97d41915`: 9 breaking, 5 warning, 2 info

## Changes

- **2026-07-17** `1d935a3e31b8`: 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`
- **2024-10-29** `54501f4624fd`: 1 breaking, 13 info
  - the `supported_features` response's property type changed from no type 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`: 9 breaking, 4 warning, 1 info
  - the `supported_features` response's property type changed from `object` to no type for status `200`
  - removed the required property `supported_features/adjust_intonation_scale` from the response with the `200` status
  - removed the required property `supported_features/adjust_mora_pitch` from the response with the `200` status
  - removed the required property `supported_features/adjust_phoneme_length` from the response with the `200` status
  - removed the required property `supported_features/adjust_pitch_scale` from the response with the `200` status
  - removed the required property `supported_features/adjust_speed_scale` from the response with the `200` status
  - removed the required property `supported_features/adjust_volume_scale` from the response with the `200` status
  - removed the required property `supported_features/interrogative_upspeak` from the response with the `200` status
  - removed the required property `supported_features/synthesis_morphing` from the response with the `200` status
  - removed the optional property `supported_features/adjust_pause_length` from the response with the `200` status
  - removed the optional property `supported_features/manage_library` from the response with the `200` status
  - removed the optional property `supported_features/return_resource_url` from the response with the `200` status
  - removed the optional property `supported_features/sing` from the response with the `200` status
  - added `#/components/schemas/SupportedFeatures` to the `supported_features` response property `allOf` list for the response status `200`
- **2024-09-26** `179894d155aa`: 1 breaking, 13 info
  - the `supported_features` response's property type changed from no type 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
- **2024-07-20** `eb97301b5bb3`: 8 info
  - added the optional property `supported_features/allOf[subschema #1: SupportedFeatures]/adjust_pause_length` to the response with the `200` status
  - added the optional property `supported_features/allOf[subschema #1: SupportedFeatures]/return_resource_url` to the response with the `200` status
  - the `contributors` response's property default value `` was removed for the status `200`
  - response property `dependency_licenses/items/license` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `dependency_licenses/items/version` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/manage_library` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/sing` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `supported_vvlib_manifest_version` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
- **2024-07-09** `1d0fcadb80c5`: 5 breaking, 1 warning, 1 info
  - response property `dependency_licenses/items/license` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `dependency_licenses/items/version` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/manage_library` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/sing` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `supported_vvlib_manifest_version` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - removed the optional property `supported_features/allOf[subschema #1: SupportedFeatures]/return_resource_url` from the response with the `200` status
  - the `contributors` response's property default value `` was added for the status `200`
- **2024-06-28** `3b94f9a50fd2`: 7 info
  - added the optional property `supported_features/allOf[subschema #1: SupportedFeatures]/return_resource_url` to the response with the `200` status
  - the `contributors` response's property default value `` was removed for the status `200`
  - response property `dependency_licenses/items/license` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `dependency_licenses/items/version` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/manage_library` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/sing` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `supported_vvlib_manifest_version` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
- **2024-05-09** `fd13ee3ebb92`: 1 warning, 1 info
  - removed the optional property `supported_aivm_manifest_version` from the response with the `200` status
  - added the optional property `supported_vvlib_manifest_version` to the response with the `200` status
- **2024-05-02** `7d46d11815c2`: 4 breaking, 1 warning, 2 info
  - response property `dependency_licenses/items/license` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `dependency_licenses/items/version` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/manage_library` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/sing` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - removed the optional property `supported_vvlib_manifest_version` from the response with the `200` status
  - added the optional property `supported_aivm_manifest_version` to the response with the `200` status
  - the `contributors` response's property default value `` was added for the status `200`
- **2024-04-26** `907e5011a1aa`: 1 warning, 6 info
  - removed the optional property `supported_aivm_manifest_version` from the response with the `200` status
  - added the optional property `supported_vvlib_manifest_version` to the response with the `200` status
  - the `contributors` response's property default value `` was removed for the status `200`
  - response property `dependency_licenses/items/license` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `dependency_licenses/items/version` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/manage_library` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/sing` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
- **2024-03-22** `20d1151e28cd`: 1 warning, 1 info
  - removed the optional property `supported_vvlib_manifest_version` from the response with the `200` status
  - added the optional property `supported_aivm_manifest_version` to the response with the `200` status
- **2024-03-22** `ef4da11d01e0`: 5 breaking, 1 info
  - response property `dependency_licenses/items/license` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `dependency_licenses/items/version` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/manage_library` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `supported_features/allOf[subschema #1: SupportedFeatures]/sing` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `supported_vvlib_manifest_version` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - the `contributors` response's property default value `` was added for the status `200`
- **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`: 9 breaking, 5 warning, 2 info
  - the `supported_features` response's property type changed from `object` to no type for status `200`
  - removed the required property `supported_features/adjust_intonation_scale` from the response with the `200` status
  - removed the required property `supported_features/adjust_mora_pitch` from the response with the `200` status
  - removed the required property `supported_features/adjust_phoneme_length` from the response with the `200` status
  - removed the required property `supported_features/adjust_pitch_scale` from the response with the `200` status
  - removed the required property `supported_features/adjust_speed_scale` from the response with the `200` status
  - removed the required property `supported_features/adjust_volume_scale` from the response with the `200` status
  - removed the required property `supported_features/interrogative_upspeak` from the response with the `200` status
  - removed the required property `supported_features/synthesis_morphing` from the response with the `200` status
  - removed the optional property `supported_features/adjust_pause_length` from the response with the `200` status
  - removed the optional property `supported_features/apply_katakana_english` from the response with the `200` status
  - removed the optional property `supported_features/manage_library` from the response with the `200` status
  - removed the optional property `supported_features/return_resource_url` from the response with the `200` status
  - removed the optional property `supported_features/sing` from the response with the `200` status
  - api operation id `engine_manifest` removed and replaced with `engine_manifest_engine_manifest_get`
  - added `#/components/schemas/SupportedFeatures` to the `supported_features` response property `allOf` list for the response status `200`

---

[Operation](https://skmtc.dev/aivis-project/apis/aivisspeech-engine/docs/engine_manifest/get.md) - [API](https://skmtc.dev/aivis-project/apis/aivisspeech-engine.md) - [Page](https://skmtc.dev/aivis-project/apis/aivisspeech-engine/changes/engine_manifest/get)
