Music generator API

A song or an instrumental from a description, as an MP3 of 3 seconds to 10 minutes, cleared for commercial use. Priced per minute started (30 s unless seconds says otherwise). Search the free library first (search_assets, type audio, category music).

Tool id music-generator on the REST API (POST https://3dvalley.com/api/v1/jobs); MCP tool generate_music on https://3dvalley.com/mcp. Paid in credits (1 credit = $0.01), taken when the job starts and given back if it fails. The general rules (keys, idempotency, waiting, webhooks) are in the API docs.

The free CC0 library holds music already: GET /api/v1/assets?type=audio&category=music (MCP: search_assets) before paying for a track.

Models and prices

Model	Name	Price	Time	What it is
elevenlabs-music (default)	ElevenLabs Music	150 credits per minute	about 60 s	A song or an instrumental from a description, 3 seconds to 10 minutes, cleared for commercial use.

Input

Field	Required
prompt	yes	The music: "calm lo-fi piano for a cozy farming game, 80 BPM". Lyrics may be part of it. Up to 4,100 characters.

Options

Option	Type	Values
seconds	integer	from 3 to 600	The length in seconds. Default 30.
instrumental	boolean	true or false	No singing, whatever the description says. Default false.

Output

Files: audio. audio is the MP3 (128 kbit/s, 44.1 kHz). stats.seconds is its length. ElevenLabs Music is cleared for commercial use: a game or a video that uses it can be sold.

Example

curl -X POST https://3dvalley.com/api/v1/jobs \
  -H "Authorization: Bearer $THREEDVALLEY_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Prefer: wait=50" \
  -H "Content-Type: application/json" \
  -d '{"tool":"music-generator","input":{"prompt":"calm lo-fi piano for a cozy farming game, 80 BPM"},"options":{"seconds":60,"instrumental":true}}'

From an MCP client:

generate_music({"prompt":"calm lo-fi piano for a cozy farming game, 80 BPM","seconds":60,"instrumental":true})

Limits

• max_prompt: 4,100
• min_seconds: 3
• max_seconds: 600