{"uid":"cap_wXmyG6WqpW5lrhOp9zFim","slug":"halowerk-audiowerk-voice-spectrum-analyzer-4de62230","name":"HALOWERK audiowerk Voice Spectrum Analyzer","description":"HALOWERK audiowerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.","url":"https://audio.halowerk.com/voice-spectrum","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"audio":{"type":"object","properties":{"url":{"type":"string","maxLength":2048,"description":"Public http(s) URL."},"content_base64":{"type":"string","maxLength":12000000,"description":"The file inline, base64."}},"description":"The recording. Either url or content_base64.","additionalProperties":false},"detail":{"type":"boolean","default":false,"description":"Also return the power at all 128 probe frequencies, for plotting."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.006","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.006/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_G1kc_35y5P9-WClxGa4KN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.006","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes an audio recording and returns its voice frequency spectrum, with optional per-frequency power data at 128 probe points for plotting.","exampleAgentPrompt":"Analyze the voice spectrum of this recording for me — here's the audio URL: https://example.com/interview.mp3 — and include the full 128-frequency power breakdown so I can plot it.","exampleUseCases":[{"title":"Podcast voice quality check","prompt":"Can you run a spectrum analysis on my podcast recording at https://mypodcast.com/ep42.mp3 and give me the full 128-point frequency data so I can see if the voice frequencies look right before publishing?"},{"title":"Speaker vocal profile extraction","prompt":"I have a voice sample at https://storage.example.com/speaker-a.wav — analyze its frequency spectrum and return the detailed power levels at all probe frequencies so I can build a vocal fingerprint."},{"title":"Audio EQ diagnostic for a client call","prompt":"Here's a base64-encoded WAV of a client call recording — analyze its voice spectrum and tell me which frequency ranges have the most power, with the detailed 128-frequency breakdown included."}],"resultDescription":"Returns the voice frequency spectrum of the submitted audio. When detail=true, also includes power measurements at all 128 probe frequencies suitable for plotting a full spectral curve of the voice.","failureModes":["Audio URL is not publicly accessible or returns a non-200 response — request fails with an error","Base64 content exceeds 12MB limit — rejected with payload-too-large error","Neither url nor content_base64 is provided — missing required field error","Audio format is unsupported or corrupted — processing error returned","Payment not provided or insufficient — HTTP 402 payment required response"],"whenToPreferThis":"Choose this endpoint when you need detailed spectral analysis of a voice or audio recording, especially for diagnostics, vocal profiling, EQ assessment, or plotting frequency response curves. It is purpose-built for voice spectrum extraction rather than general audio metadata or transcription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:47:15.555Z","isFirstParty":false}