[risky] Default of output_format on generate_music changed unset → "mp3_48000_192". [risky] Default of output_format on generate_sound_effect changed unset → "mp3_44100_128".
[safe] Tool generate_music was added. [safe] Tool generate_sound_effect was added. [safe] Description of get_model_params changed (2% word delta). [safe] Description of list_models changed (6% word delta).
[breaking] Field approval_token was removed from generate_image input; consumers still sending it may be rejected or silently ignored. [breaking] Field approval_token was removed from generate_video input; consumers still sending it may be…
[breaking] Field operation was removed from generate_video input; consumers still sending it may be rejected or silently ignored. [breaking] Field start_time was removed from generate_video input; consumers still sending it may be rejected…
[safe] Description of generate_video changed (7% word delta). [risky] Description of merge_media changed (40% word delta). [risky] Optional field canvas_video_index was added to merge_media; may shift model behaviour. [risky] Optional…
[safe] Tool clone_voice was added. [risky] Description of assemble_film changed (64% word delta). [risky] Description of create_film_project changed (41% word delta). [safe] Description of generate_image changed (20% word delta). [safe]…
Contract changelog
Every revision Zevruna has observed, classified from the consumer's side. Advisories above are the subset severe enough to publish.
2026-09-21 13:56safe
Description of generate_video changed (4% word delta).
2026-09-20 22:41risky
safe Description of add_subtitles changed (22% word delta).
risky Optional field force_new was added to add_subtitles; may shift model behaviour.
2026-09-20 21:20safe
Description of merge_media changed (2% word delta).
2026-09-20 14:09breaking
risky Default of output_format on generate_music changed unset → "mp3_48000_192".
breaking Enum value mp3_48000_192 removed from output_format on generate_sound_effect.
risky Default of output_format on generate_sound_effect changed unset → "mp3_44100_128".
2026-09-18 12:12risky
safe Description of generate_speech changed (10% word delta).
safe Description of generate_video changed (25% word delta).
risky Description of list_themes changed (41% word delta).
risky Description of mcp_ui_action changed (69% word delta).
safe Description of render_html_video changed (5% word delta).
2026-09-17 15:50safe
Description of cut_and_reframe_video changed (24% word delta).
2026-09-17 11:40breaking
breaking Tool generate_audio was removed.
safe Tool generate_music was added.
safe Tool generate_sound_effect was added.
safe Description of get_model_params changed (2% word delta).
safe Description of list_models changed (6% word delta).
2026-09-16 23:05risky
Description of remove_background changed (37% word delta).
Optional field force_new was added to remove_background; may shift model behaviour.
2026-09-16 22:02risky
Enum value video_upscale added to operation on estimate_generation.
2026-09-16 15:43risky
safe Description of merge_media changed (13% word delta).
risky Optional field audio_format was added to merge_media; may shift model behaviour.
risky Optional field start_offset was added to merge_media; may shift model behaviour.
risky Optional field target_fps was added to merge_media; may shift model behaviour.
2026-09-15 14:06safe
Description of upload_asset changed (17% word delta).
Field type on upload_asset is no longer required.
2026-09-14 20:44risky
safe Description of clone_voice changed (15% word delta).
safe Description of generate_speech changed (5% word delta).
risky Optional field force_new was added to generate_speech; may shift model behaviour.
2026-09-14 17:27risky
risky Description of confirm_upload changed (25% word delta).
safe Description of get_upload_url changed (19% word delta).
safe Description of import_media changed (23% word delta).
risky Description of manage_character changed (29% word delta).
2026-09-14 16:21risky
risky Description of clone_voice changed (44% word delta).
risky Optional field character_name was added to clone_voice; may shift model behaviour.
risky Optional field language was added to clone_voice; may shift model behaviour.
risky Optional field provider was added to clone_voice; may shift model behaviour.
safe Field character_id on clone_voice is no longer required.
safe Description of delete_character changed (3% word delta).
safe Description of generate_speech changed (8% word delta).
risky Enum value excited added to emotion on generate_speech.
+ 3 more in this revision
2026-09-14 14:10risky
risky Description of trim_video changed (67% word delta).
risky Optional field audio_format was added to trim_video; may shift model behaviour.
risky Optional field audio_url was added to trim_video; may shift model behaviour.
safe Field video_url on trim_video is no longer required.
2026-09-14 09:46risky
Optional field ui_refresh was added to check_job; may shift model behaviour.
2026-09-13 20:02risky
safe Description of generate_video changed (3% word delta).
risky Optional field force_new was added to generate_video; may shift model behaviour.
2026-09-13 15:51risky
safe Description of estimate_generation changed (16% word delta).
risky Description of extract_frames changed (26% word delta).
safe Description of generate_video changed (19% word delta).
2026-09-13 14:36risky
risky Description of clone_voice changed (63% word delta).
risky Optional field audio_asset_id was added to clone_voice; may shift model behaviour.
safe Field audio_url on clone_voice is no longer required.
risky Description of delete_character changed (89% word delta).
safe Description of generate_speech changed (3% word delta).
risky Optional field purpose was added to get_upload_url; may shift model behaviour.
risky Optional field purpose was added to import_media; may shift model behaviour.
safe Description of manage_character changed (13% word delta).
2026-09-13 00:15safe
Description of extract_frames changed (14% word delta).
Description of generate_speech changed (3% word delta).
Description of get_model_params changed (12% word delta).
2026-09-12 23:10safe
Description of generate_speech changed (2% word delta).
Description of render_html_video changed (4% word delta).
2026-09-12 22:01risky
safe Description of generate_speech changed (6% word delta).
risky Optional field ui_refresh was added to get_film_project; may shift model behaviour.
2026-09-12 20:47safe
Description of generate_video changed (10% word delta).
2026-09-12 19:40safe
Description of clone_voice changed (7% word delta).
2026-09-12 17:37safe
Description of generate_video changed (4% word delta).
Snapshot log
The hashes to pin against. Identical contracts hash identically.
Free forever for open-source maintainers. It reports what Zevruna actually observed, a green badge means no breaking change in ninety days, and it says so honestly when a server has never been polled.
[](https://zevruna.com/servers/app.creativeclaw.co)