AudioLab MCP

What it does

AudioLab is the meter most generative sound pipelines are missing: ten analysis tools over a hosted API returning integrated LUFS to EBU R128 / ITU BS.1770-4, true-peak in dBTP, loudness range, crest factor, stereo correlation, spectrum, and voice diagnostics down to speaking rate, SNR, room echo, sibilance and clipping risk. check_target grades a file against a named delivery spec — ebu-broadcast, atsc-broadcast, podcast or the streaming platforms — and returns per-metric deltas plus the ffmpeg loudnorm command that would fix it. Nothing here generates or processes audio; it tells an agent whether the mix passes before the deliverable ships, which is the step between a finished cut and a rejected master.

Connect

https://audiolab.tools/mcp

Remote headers required: Authorization. Use the local stdio command when your client cannot attach custom MCP headers.

claude mcp add audiolab -e AUDIOLAB_API_KEY=YOUR_KEY -- npx -y @audiolabtools/mcp-server

{
  "mcpServers": {
    "audiolab": {
      "command": "npx",
      "args": [
        "-y",
        "@audiolabtools/mcp-server"
      ],
      "env": {
        "AUDIOLAB_API_KEY": "YOUR_KEY_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "audiolab": {
      "command": "npx",
      "args": [
        "-y",
        "@audiolabtools/mcp-server"
      ],
      "env": {
        "AUDIOLAB_API_KEY": "YOUR_KEY_HERE"
      }
    }
  }
}

Sample tools

Field notes

Verified 23 Sep 2026: MIT, npm @audiolabtools/mcp-server at 0.4.1 published the day before, nine releases since 3 Jul 2026, and listed in the official MCP registry. Take the stdio form if your audio is on disk — a local `path` works only in the npx server; the hosted endpoint at https://audiolab.tools/mcp (401 unauthenticated, `Authorization: Bearer` rather than OAuth) accepts public URLs only. Either way it is a hosted analyser: a URL is fetched server-side, a local file is uploaded, measured and deleted, and only numbers come back, so if the audio cannot leave the building do not use it. Free tier is 1,000 calls and 2 GB a month with no card, but the seven named analyze_profile lenses (voice, master, provenance, dataset, environment, broadcast, loop) are plan-gated; free keys get `basic`. Limits that bite a feature: 50 MB per local file, loudness routes stream to roughly three hours, voice and signal routes cap near seven minutes, one file per call, and analyze_batch tops out at 20 sources while metering each as its own call. It measures and never fixes — the fix is an ffmpeg loudnorm string you run yourself, or the Auphonic entry for actual processing. Operated by AudioLaunch (KVK 54871204, EU-hosted), built by Nathan Renting; the GitHub repo is a generated mirror of an internal monorepo, so read the npm cadence rather than the star count.

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