audio-mastering-mcp
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| FFMPEG_PATH | No | Override the path to the ffmpeg binary if it's not on your PATH. |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| analyze_loudnessA | Measure a track's integrated loudness (LUFS), true peak (dBTP), loudness range (LRA) and gating threshold. Call before/after mastering to verify levels against a target (hip-hop ~-9 to -10 LUFS, streaming -14, ceiling -1 dBTP). |
| master_audioA | Run a full professional mastering chain (corrective EQ -> glue compression -> 3-band multiband compression -> saturation -> harmonic exciter -> stereo stage -> driven limiter) with 2-pass loudnorm to hit an exact loudness/true-peak target. Outputs a 320kbps MP3. The 'spatial' option sets the stereo image: 'immersive' keeps the bass mono for a solid low end while widening the highs and adding subtle air for a bigger, more premium feel; 'subtle' adds light width; 'none' leaves the image as-is. |
| mix_vocal_over_beatA | Mix a vocal over an instrumental with sidechain ducking (the beat dips under the vocal so words cut through), plus presence EQ + light reverb on the voice and the beat pulled underneath. Outputs a 24-bit WAV pre-master that you then feed to master_audio. |
| export_dolbyA | Encode a track to a Dolby codec: 'eac3' = Dolby Digital Plus (E-AC-3), 'ac3' = Dolby Digital. IMPORTANT: these are channel-based Dolby codecs (the 'Dolby' badge), NOT object-based Dolby Atmos, and for a stereo music single give no sonic benefit over a good stereo master. True Atmos requires Dolby's Renderer (e.g. Logic Pro) and the separate stems. Default stereo at 48kHz; set channels=6 for a basic 5.1 upmix. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
TDQS
Scored across 4 tools
Each tool has a clearly distinct purpose: analyze_loudness for measurement, export_dolby for encoding, master_audio for full mastering, mix_vocal_over_beat for vocal mixing. No overlap.
All tools follow a consistent verb_noun pattern (analyze_loudness, export_dolby, master_audio, mix_vocal_over_beat), making the set predictable.
Four tools is well-scoped for an audio mastering server, covering essential functions without being too few or too many.
The tool surface covers analysis, mixing, mastering, and export. A minor gap is the lack of direct raw WAV export without mastering, but mix_vocal_over_beat provides a pre-master WAV.