Name: audio-loudnorm
Price: 0.02 USDC
Availability: InStock

$ man audio-loudnorm

PRICE / CALL

$0.02

USDC · base mainnet · scheme: exact

METHOD

POST

CLUSTER

CATEGORY

media

STATUS

● live

NAME

audio-loudnorm — audio loudness normalizer (ebu r128 lufs)

SYNOPSIS

POST https://x402.org/v1/audio-loudnorm
     Content-Type: application/json
     X-PAYMENT:    <signed-transferWithAuthorization>

     { ... }

↳ first call → 402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.

DESCRIPTION

Audio loudness normalizer (EBU R128 LUFS). Podcast / Spotify / YouTube target presets (-23 / -16 / -14). Two-pass dynamic mode. Returns hosted MP3.

INPUT — request schema

property	type	description	req?
audio_url	string	Public URL of an audio or video file to normalize. Must be HTTPS-accessible.	required
target_lufs	number	Target integrated loudness in LUFS. Defaults to -16 (podcast/Spotify standard). Range: -30 to -10. Common targets: -23 (broadcast/EBU R128), -16 (podcast), -14 (YouTube/Apple Music).	optional
true_peak	number	Maximum true peak in dBTP. Defaults to -1.5. Range: -9 to 0.	optional

OUTPUT — response shape

field	type	description
audio_url	string	URL of the normalized audio file (hosted by fal.ai)
duration_seconds	number	Duration of the source audio in seconds
target_lufs	number	The LUFS target that was applied
true_peak	number	The true peak limit that was applied
source_url	string	Echo of the input URL

EXAMPLES — two ways to call

EXAMPLE 1 · curl

curl -X POST https://x402.org/v1/audio-loudnorm \
  -H 'Content-Type: application/json' \
  -d '{ }'

first response = 402 Payment Required with payment requirements; sign + retry with X-PAYMENT.

EXAMPLE 2 · mcp

# install once
claude mcp add x402 --command "npx x402-deployer-mcp"

# then ask Claude Code:
# "use the audio-loudnorm tool to ..."

MCP server handles payment automatically — your coding agent just calls the tool by name.

METADATA

ADJACENT — other endpoints in mediakit

endpoint	description	price
csv-to-jsonl	CSV to JSON / CSV to JSONL converter / data pipeline preprocessor.	$0.02
image-translate	Image translator: vision-OCR + Venice translate.	$0.02
image-upscale	Image upscale / 2x upscaler / 4x upscaler / super-resolution / sharpen image / enlarge image without loss.	$0.02
pdf-watermark	PDF watermark / image watermark / video watermark — text or image overlay on PDFs, PNG/JPG/GIF, or MP4/MOV/WEBM.	$0.02
video-to-subtitles	SRT / VTT subtitle generator from video or audio.	$0.02
video-trim	Video trimmer / video cutter / video clip tool.	$0.02
watermark	PDF / image / video watermarking — text or image overlay.	$0.02
watermark-pdf	Add watermark to PDF.	$0.02

/audio-loudnorm(1)