{"slug":"x402-agentutility-ai-audio-loudnorm-557456","title":"Normalize audio loudness to a target LUFS level for podcasts, YouTube, and Spoti","host":"x402.agentutility.ai","method":"POST","resource":"https://x402.agentutility.ai/audio-loudnorm","category":"image","description":"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","price_listed":0.02,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"audio_url":"https://download.samplelib.com/mp3/sample-3s.mp3","target_lufs":-16},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"audio_url":{"description":"URL of the audio file to normalize. Rejected if longer than 60 minutes.","type":"string"},"target_lufs":{"description":"Default -16. Range -30 to -10.","type":"number"},"true_peak":{"description":"Default -1.5. Range -9 to 0.","type":"number"}},"required":["audio_url"]},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"properties":{"audio_url":{"type":"string"},"duration_seconds":{"type":"integer"},"target_lufs":{"type":"integer"}},"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"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.","last_updated":"2026-09-08T03:18:17.468Z","schemes":["exact"]}