@ai-native-solutions/fallaudio-mcp

MCP stdio server that exposes fallaudio audio ops as tools: WAV inspection, normalize, trim silence, fade in/out, gain, biquad filter, speed, reverse, trim.

Built on @modelcontextprotocol/sdk and @ai-native-solutions/fallaudio-sdk.

Install

npm install -g @ai-native-solutions/fallaudio-mcp

Wire into Claude Code

claude mcp add fallaudio -- npx -y @ai-native-solutions/fallaudio-mcp

Or manually, .mcp.json:

{
  "mcpServers": {
    "fallaudio": {
      "command": "npx",
      "args": ["-y", "@ai-native-solutions/fallaudio-mcp"]
    }
  }
}

Tools

Tool	Purpose
inspect	Report sample rate, channels, duration, peak/RMS dB
normalize	Peak-normalize to 0.99
trim_silence	Strip leading/trailing silence below threshold
fade	Fade in and/or fade out in seconds
gain	Apply dB gain (positive or negative), optional range
filter	Biquad lowpass / highpass / bandpass at a cutoff freq
speed	Time-stretch (and pitch-shift) by a factor
reverse	Reverse the audio
trim	Trim to a [start, end) sample range

Every editing tool takes an input path and an output path (both .wav) and returns JSON with the number of bytes written.

Resources

• fallaudio://ops — signature reference for the edit ops
• fallaudio://filters — RBJ biquad recipe notes
• fallaudio://wav-format — encoder/decoder format notes

Example

Ask Claude:

"Use fallaudio to inspect ./recording.wav, then normalize it, apply a highpass filter at 80 Hz to kill rumble, add a 250 ms fade in and fade out, and save it as ./clean.wav."

Claude will chain inspect → normalize → filter → fade.

License

MIT · ai-nativesolutions.com