Sounds - MountSea API

Sounds tab. Always instrumental. sound.description is the official tags and the title (title case, cut at 80 characters with ...). Any prompt or tags you send are overwritten. max_mode is HTTP 400. POST /suno/v2/generate returns { "taskId" }. Poll Get Task Status. Schema: GET /suno/v2/generate/schema?task=sound.

Parameters

Field	Required	Notes
`task`	Yes	`"sound"`
`model`	Yes	`chirp-v6`
`sound.description`	Yes	What the sound is. Sent upstream as tags, unchanged
`sound.type`	No	`"one_shot"` (default) or `"loop"`. Only `loop` sets `sound_configs.user_loop`
`sound.key`	No	Omit = Any. See the table below. Invalid key → 400
`sound.bpm`	No	1–300 → `user_tempo`. Omit = Auto

Do not send max_mode.

Key

Omit sound.key for Any (user_key is not sent). Anything not in the table is HTTP 400. Write a space before maj or min: "G maj", not "Gmaj" or "G major". Natural notes are sent unchanged. Major drops maj. Minor replaces min with m. "G" and "G maj" both become "G". "A min" becomes "Am".

Note	Natural	Major	Minor
C	`C` → `C`	`C maj` → `C`	`C min` → `Cm`
C#	`C#` → `C#`	`C# maj` → `C#`	`C# min` → `C#m`
D	`D` → `D`	`D maj` → `D`	`D min` → `Dm`
D#	`D#` → `D#`	`D# maj` → `D#`	`D# min` → `D#m`
E	`E` → `E`	`E maj` → `E`	`E min` → `Em`
F	`F` → `F`	`F maj` → `F`	`F min` → `Fm`
F#	`F#` → `F#`	`F# maj` → `F#`	`F# min` → `F#m`
G	`G` → `G`	`G maj` → `G`	`G min` → `Gm`
G#	`G#` → `G#`	`G# maj` → `G#`	`G# min` → `G#m`
A	`A` → `A`	`A maj` → `A`	`A min` → `Am`
A#	`A#` → `A#`	`A# maj` → `A#`	`A# min` → `A#m`
B	`B` → `B`	`B maj` → `B`	`B min` → `Bm`

The right-hand side of each cell is upstream user_key. Loop + G maj + Auto becomes { "user_key": "G", "user_loop": true }. Add "bpm": 120 and the object also gets "user_tempo": 120.

Example

{
  "task": "sound",
  "model": "chirp-v6",
  "sound": {
    "description": "Fast cinematic whoosh transition, airy stereo sweep, soft bass hit at the end, clean and short, no reverb tail mush",
    "type": "loop",
    "key": "G maj"
  }
}