Audio Separation MCP Server
Enables audio source separation into vocals and instruments using ComfyUI MelBandRoFormer models via a set of MCP tools.
README
Audio Separation MCP Server
Streamable MCP server for ComfyUI MelBandRoFormer audio source separation.
Tools
| Tool | Description |
|---|---|
audiosep_health |
Check ComfyUI backend status |
audiosep_list_models |
List available MelBandRoFormer models |
audiosep_start_job |
Submit audio file for separation |
audiosep_get_job |
Get job status/results |
audiosep_cancel_job |
Cancel a running job |
audiosep_list_artifacts |
List all stored artifacts |
audiosep_get_artifact |
Download artifact by name |
Running
MCP Server (streamable-http)
cd /home/tyrel/projects/audio-sep-mcp
AUDIOSEP_MCP_PORT=8769 python mcp_server.py # serves on http://localhost:8769/mcp
Note: default port 8765 collides with other local MCP servers — the systemd service below overrides it to 8769.
With Gradio UI
python app.py # serves on :8767
systemd (user services)
Both services are managed as systemd user units and start automatically (linger enabled):
systemctl --user status audio-sep-mcp.service audio-sep-gradio.service
systemctl --user restart audio-sep-mcp.service audio-sep-gradio.service
journalctl --user -u audio-sep-mcp.service -f
Unit files: ~/.config/systemd/user/audio-sep-mcp.service, ~/.config/systemd/user/audio-sep-gradio.service.
Environment Variables
| Variable | Default | Description |
|---|---|---|
COMFYUI_URL |
http://localhost:8188 |
ComfyUI backend URL |
AUDIOSEP_MCP_PORT |
8765 |
MCP server port (systemd service overrides to 8769) |
AUDIOSEP_WORKSPACE |
~/Documents/audio-sep-output |
Working directory |
AUDIOSEP_WORKFLOW_PATH |
~/ComfyUI/user/default/workflows/hermes_known_good/melband_roformer_vocals_instruments_preview.json |
Workflow file |
AUDIOSEP_OUTPUT_RETENTION_DAYS |
30 |
Artifact cleanup age |
Supported Input Formats
wav, mp3, flac, ogg, aac, m4a, mp4, webm
Output
Splits audio into vocals.wav and instruments.wav in ~/Documents/audio-sep-output/artifacts/<job_id>/.
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