{"uid":"cap_1LLAfGgISW9pY8OmqQl__","slug":"fetchharbor-audio-format-converter-31e20f59","name":"FetchHarbor Audio Format Converter","description":"Convert bounded audio to WAV, MP3, Opus, or FLAC with fixed server-side FFmpeg arguments in an isolated worker. Returns base64 JSON and retains no media.","url":"https://fetchharbor.benlab.download/audio/convert","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"format":{"enum":["wav","mp3","opus","flac"],"type":"string"},"language":{"type":["string","null"],"maxLength":16},"audio_base64":{"type":"string","description":"Base64-encoded audio; decoded size is operator limited.","contentEncoding":"base64"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.015","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":"$0.015/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_2BrlIL84JL0A85gym1pwi","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.015","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts base64-encoded audio to WAV, MP3, Opus, or FLAC format using server-side FFmpeg in an isolated worker, returning base64 JSON with no media retained.","exampleAgentPrompt":"Convert this base64-encoded audio clip to MP3 format using the FetchHarbor converter and give me back the result as base64.","exampleUseCases":[{"title":"Podcast episode format normalization","prompt":"I have a base64-encoded WAV recording of my podcast episode — can you convert it to MP3 so it's ready for upload to my hosting platform?"},{"title":"Lossless archive conversion","prompt":"Take this base64 audio and convert it to FLAC format so I have a lossless archive copy — no need to store it anywhere, just send me back the base64 result."},{"title":"Opus compression for web streaming","prompt":"I need this audio converted to Opus format for my web app — here's the base64-encoded source file, please transcode it and return the Opus base64 output."}],"resultDescription":"A JSON object containing the converted audio encoded as a base64 string in the requested format (WAV, MP3, Opus, or FLAC). No media is retained server-side after the response is returned.","failureModes":["Audio file exceeds operator-defined size limit — returns an error indicating decoded size is too large","Unsupported or malformed base64 input — FFmpeg may fail to decode or process the audio","Invalid format enum value — request rejected with validation error","Corrupt or unrecognizable audio codec in the source file — FFmpeg transcoding error","Worker timeout if audio processing takes too long for large files"],"whenToPreferThis":"Choose this endpoint when you need privacy-safe, stateless audio format conversion without any server-side media retention. Ideal for agents that need to transcode audio between WAV, MP3, Opus, and FLAC using fixed, deterministic FFmpeg arguments in an isolated environment. Prefer this over general-purpose transcoding services when privacy and no-storage guarantees matter, or when operating within an x402 micropayment workflow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T17:53:22.187Z","isFirstParty":false}