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Audio Normalize

by Audio normalize (EBU R128) in News & content

x402 APIPassing, checked 26 min ago

Loudness-normalize any audio/video URL to a target LUFS with ffmpeg's loudnorm (EBU R128) and return MP3 - consistent levels for podcasts, clips, and TTS output. Body: {"url":"https://…/audio.wav","targetLufs":-16?}.

POST https://agent402.tools/api/audio-normalize

Last 30 days

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Uptime
100%
Response time
185 ms typical, 185 ms slowest 5%
Last check
26 min ago
Next check
in 3 min

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://agent402.tools/api/audio-normalize" \
  -H "content-type: application/json" \
  -d '{"url":"https://agent402.tools/fixtures/sample-audio.wav"}'
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Faudio-normalize
const res = await pay("https://agent402.tools/api/audio-normalize", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"url":"https://agent402.tools/fixtures/sample-audio.wav"}),
});
console.log(await res.json());

Example input

{
  "url": "https://agent402.tools/fixtures/sample-audio.wav"
}

Example output

{
  "bytes": 49581,
  "format": "mp3",
  "mp3Base64": "SUQzBAAAAA…",
  "targetLufs": -16,
  "truePeakDb": -1.5
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
26 min agoPassed402185 ms$0.02
6 h agoPassed402185 ms$0.02