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Sift Audio Analyze
x402
Sift Audio Analyze is a paid API for AI agents from sift.srv1996466.hstgr.cloud, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-23).
Analyzes an audio file URL for integrated loudness (LUFS), true peak, loudness range, and per-target gain recommendations (podcast, streaming, broadcast)
Price / call$0.005
Success—
StatusUnknown
How this service works
Measure audio loudness (EBU R 128 LUFS, true peak, loudness range). Two-pass EBU R 128 measurement of any audio or video file URL (up to 100 MB, 30 min): integrated LUFS, true peak, loudness range, and the gain needed for 11 named delivery targets.
Output
Returns a JSON object with integrated_lufs (overall loudness in LUFS), true_peak_dbtp (maximum true peak in dBTP), loudness_range_lu (dynamic range in LU), and a targets object with per-platform entries (e.g. podcast, streaming, broadcast) each containing the target LUFS level and the gain_needed_db to reach it.
Example use cases
Podcast episode loudness check
“Before I upload this week's episode, can you check https://cdn.mypodcast.com/ep108.mp3 for its integrated LUFS and true peak, and tell me whether it needs to be boosted or cut to hit the standard -16 LUFS podcast target?”
Music track streaming compliance
“I need to know if my master at https://files.mylabel.com/track_master.wav is too loud or too quiet for Spotify and Apple Music — can you measure its integrated loudness and tell me the exact gain adjustment needed for each platform?”
Broadcast ad loudness validation
“We're about to deliver a TV spot — can you analyze https://addelivery.agency.com/spot_v3.wav and confirm whether it meets broadcast loudness standards, and by how many dB it needs to change if not?”
Technical details
Endpoint
GEThttps://sift.srv1996466.hstgr.cloud/v1/audio/analyze?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need objective loudness measurements (LUFS, true peak, LR) and actionable per-platform gain recommendations for an audio file accessible via URL, without needing to normalize the file itself — pair with /v1/audio/normalize when you need the actual corrected file.
Side effects
- Unreachable or invalid audio URL returns an error — ensure the URL is publicly accessible
- Non-audio file URL (e.g. HTML page) returns a format error
- Very large audio files may time out — use direct CDN links rather than redirect chains
- Corrupt or unsupported codec files return a decoding error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"targets": {
"podcast": {
"lufs": -16,
"gain_needed_db": 10.1
}
},
"true_peak_dbtp": -8.3,
"integrated_lufs": -26.1,
"loudness_range_lu": 0
}
}Tags
x402
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