Parameters

Music generation parameters

1. Custom creation mode — standard generation

Parameter	Type	Description	Notes
title	String	Song title	-
tags	String	Music style	Separate with half-width commas
generation_type	String	Generation type	Default: TEXT
prompt	String	Music creation prompt	May include lyrics, among other content
negative_tags	String	Styles to avoid	May be an empty string
mv	String	Model	Default: chirp-v4 Options: chirp-v3-5, chirp-v3-0 Use chirp-v3-5-upload when extending uploaded audio
metadata	Object	Custom parameters	Includes create_mode: custom, vocal_gender: "m"/"f" — m for male, f for female

2. Custom creation mode — continuation

Parameter	Type	Description	Notes
title	String	Song title	-
tags	String	Music style	Separate with half-width commas
generation_type	String	Generation type	Default: TEXT
prompt	String	Music creation prompt	May include lyrics, among other content
negative_tags	String	Styles to avoid	May be an empty string
mv	String	Model	Default: chirp-v4 Options: chirp-v3-5, chirp-v3-0
continue_at	Float	Continuation start time	Continue from this second Example: 120.00 or 61.59
continue_clip_id	String	Continuation song ID	ID of the song to continue
task	String	Task type	Default: extend

3. Custom creation mode — upload generation

Parameter	Type	Description	Notes
prompt	String	Music creation prompt	May be an empty string
generation_type	String	Generation type	Default: TEXT
tags	String	Music style	Separate with half-width commas
negative_tags	String	Styles to avoid	May be an empty string
mv	String	Model	Use chirp-v3-5-tau
title	String	Song title	-
continue_clip_id	String	Continuation song ID	Optional; may be null
continue_at	Float	Continuation start time	Optional; may be null
continued_aligned_prompt	String	Aligned prompt for continuation	Optional; may be null
infill_start_s	Float	Infill start time (seconds)	Optional; may be null
infill_end_s	Float	Infill end time (seconds)	Optional; may be null
task	String	Task type	For Cover: fixed to cover
cover_clip_id	String	Cover ID	Original song ID or uploaded audio clip ID to cover