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Check your audio master

Decode one master with real ffmpeg passes and read back its integrated loudness, true peak, dynamics, and silence with an A to D grade. Compare two to four tracks to see where a release drifts.

Guest includes 50 lifetime app requests. Create a free account for 100 app requests each calendar month. One allowance across every app, in your browser and your agent.One allowance across every app, in your browser and your agent. Manage usage

Audio Master Check

Connect agent

Guest access is available after setup. Full account linking verified by PowMCP: Claude only.

Release Check

Decode one audio master and grade its loudness, true peak, dynamics, and silence.

Usually finishes in a few seconds; a large lossless master can take up to 110 seconds.

Audio source

Only the active source is sent. You can switch without losing what you entered.

Direct link to one MP3, WAV, FLAC, AAC, M4A, OGG, or Opus file, not a streaming page.

Content profile (optional)

Sets which release conventions the findings are compared against.

Add Audio Master Check to your agent

Connect this app on its own. Add other PowMCP apps whenever your agent needs another job done.

Open the apps workspace A glowing app tile clicking into a slot on a dark agent device, with the PowMCP app box behind it

Connect directly

Choose your agent. Each button opens a new tab with only this app's endpoint ready to add.

Use another agent

Copy one ready-to-send prompt for any agent that supports remote MCP connections.

Manual endpoint, JSON, and terminal commands

For clients that require manual configuration, use this app-only endpoint, its JSON entry, or one terminal command.

ChatGPT: enable Developer mode in Settings → Security and login, then add this MCP endpoint from the Plugins page. Availability depends on your account and workspace policy. PowMCP has not yet verified ChatGPT account linking. OpenAI setup guide

https://powmcp.com/audio-release-check/mcp
{
  "mcpServers": {
    "powmcp-audio-release-check": {
      "type": "http",
      "url": "https://powmcp.com/audio-release-check/mcp"
    }
  }
}

Terminal agents add this app with one command:

Claude Code
claude mcp add --transport http powmcp-audio-release-check https://powmcp.com/audio-release-check/mcp
Codex CLI
codex mcp add powmcp-audio-release-check --url https://powmcp.com/audio-release-check/mcp
Gemini CLI
gemini mcp add --transport http powmcp-audio-release-check https://powmcp.com/audio-release-check/mcp

Manage, disable, or remove this connection in your agent's own MCP settings. PowMCP does not label an external connection as installed without confirmation from that client.

Proof

What it does

Measure LUFS loudness, true peak, clipping, and release-wide consistency in an audio master before release

Decode a public or chat-attached audio master and check loudness, true peak, dynamics, clipping, silence, channels, encoding, and consistency across release tracks.

Category
Music

Request cost1 completed result

Guests get 50 lifetime app requests. Free accounts get 100 each calendar month.

Tools in this app

01

Release Check

release_check

Downloads one audio file, a directly hosted public URL or a chat-attached file (MP3, WAV, FLAC, AAC, M4A, OGG, or Opus), and measures it with real decoders: container, codec, sample rate, bit depth, channels, integrated loudness (LUFS), true peak (dBTP), loudness range, RMS, dynamic range, clipping-related sample runs, DC offset, invalid samples, and leading/trailing/interior silence. Returns evidence-based findings, an A-D technical grade, the exact analyzed duration, a SHA-256 hash, and engine versions. Measures the decoded signal only. Embedded tags and artwork are not inspected. Pass url for a hosted file or file for an attachment, exactly one; never streaming-service pages. Typical tracks finish in a few seconds; large lossless files can take up to 110 seconds.

02

Track Compare

track_compare

Measures two to four audio files (directly hosted public URLs or chat-attached files) with the same decoding engines and compares them as one release: per-track integrated loudness, true peak, loudness range, encoding, and silence, plus cross-track spreads, consistency warnings, and the most technically consistent track. Compares the decoded signal only. Embedded tags and artwork are not inspected. Read-only measurements without ranking artistic quality. Pass urls for hosted files or files for attachments, exactly one; never streaming-service pages. Typically tens of seconds; up to 110 seconds.

Audio Master Check questions

Scope and boundaries for Audio Master Check.

01What can I check with Audio Master Check?

Analyze the direct MP3 of Chopin Prelude Op. 28 no. 11 with the music profile, or attach two to four masters from one release to compare their decoded signals.

02How should I read the result?

Read analysisComplete and unmeasured before the grade: A means no errors or warnings, B one or two warnings, C three or more warnings, and D any error in the measured signal findings. Address findings under the selected profile, but treat partial decoding or unmeasured engines as incomplete. Comparison consistency covers measured signal properties only and excludes unmeasured tracks.

03What are its limits?

Measurements cover the decoded audio signal, not artistic quality, mix intent, tags, or artwork. Direct audio files are required rather than streaming-service pages, and analysisComplete plus unmeasured or limitation fields should be checked before treating a capped decode as complete.