Media
Mix multiple stems and export vocal up/down versions
Call this tool from your code in three languages.
# 1) Upload each file first → returns { filePath }
curl -X POST 'https://api.elysiatools.com/upload/audio-stem-mixer' \
-F 'file=@/path/to/stemFiles.ext'
# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/audio-stem-mixer' \
-F 'stemFiles=/path/to/file.ext' \
-F 'vocalIndex=0' \
-F 'vocalUpGain=3' \
-F 'vocalDownGain=-3' \
-F 'outputFormat=mp3'Send a POST request with your inputs as JSON. File parameters require a separate upload first.
POST https://api.elysiatools.com/en/api/tools/audio-stem-mixer| Name | Type | Required | Description |
|---|---|---|---|
| stemFiles | fileupload required | Yes | — |
| vocalIndex | number | No | — |
| vocalUpGain | number | No | — |
| vocalDownGain | number | No | — |
| outputFormat | select | No | — |
Add this tool to your Model Context Protocol server so AI agents can list and call it.
Add this block to your MCP client configuration:
{
"mcpServers": {
"elysiatools-audio-stem-mixer": {
"name": "audio-stem-mixer",
"description": "Mix multiple stems and export vocal up/down versions",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=audio-stem-mixer",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}After connecting to the SSE endpoint, list the exposed tools:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Invoke the tool by its id, passing arguments built from its parameters:
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "audio-stem-mixer",
"arguments": {
"stemFiles": "https://example.com/file.ext",
"vocalIndex": 0,
"vocalUpGain": 3,
"vocalDownGain": -3,
"outputFormat": "mp3"
}
}
}File result
{
"filePath": "/public/processing/randomid.ext",
"fileName": "output.ext",
"contentType": "application/octet-stream",
"size": 1024,
"metadata": {
"key": "value"
},
"error": "Error message (optional)",
"message": "Notification message (optional)"
}Questions or issues? Contact [email protected]