$0.02
per call · USD Coin on Base
Normalize audio loudness to a target LUFS level for podcasts, YouTube, and Spotify delivery. Send an audio_url plus an optional target_lufs (defaults to -16) and true_peak, and it probes duration, runs two-pass EBU R128 loudness normalization, and returns a hosted MP3 URL with the applied target and duration in seconds. Common presets: -23 for broadcast, -16 for podcasts, -14 for streaming platforms. Use it as a loudness normalizer, LUFS correction API, or audio mastering step before publishing.
Endpoint
POST https://x402.agentutility.ai/audio-loudnorm1
Calls / 30d
1
Unique payers / 30d
Sep 8
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://x402.agentutility.ai/audio-loudnorm", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"audio_url": "https://download.samplelib.com/mp3/sample-3s.mp3",
"target_lufs": -16
}),
});
const data = await res.json();curl -X POST \
"https://x402.agentutility.ai/audio-loudnorm" \
-H "Content-Type: application/json" \
-d '{"audio_url":"https://download.samplelib.com/mp3/sample-3s.mp3","target_lufs":-16}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"audio_url": "https://...mp3",
"duration_seconds": 120,
"target_lufs": -16
}Payment details
0x6c0752c09e7f6fa6526fcdf40e456a159ebb5621USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Media & Generation and the homepage with a featured placement.
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