{"uid":"cap_pWp-n5kEqlDSqDmNgm9sI","slug":"onchain-router-audio-transcription-speech-to-text-9cc49f56","name":"Onchain Router – Audio Transcription (Speech-to-Text)","description":"Speech-to-text transcription · one locally validated audio upload · 0% service fee launch promotion","url":"https://llm.agenticfi.wtf/v1/audio/transcriptions","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"model":{"enum":["elevenlabs/scribe-v2"],"type":"string"},"file_format":{"enum":["other"],"type":"string","default":"other"},"audio_base64":{"type":"string","format":"byte","maxLength":34952536,"minLength":4,"description":"Canonical RFC 4648 Base64 audio without a data-URL prefix or whitespace."},"response_format":{"enum":["json","verbose_json"],"type":"string"}}},"responseSchema":{"type":"json","example":{"id":"trns_example","text":"Transcribed speech.","model":"elevenlabs/scribe-v2","usage":{"input_audio_ms":3100}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Uc6oTUah9Cm3wuFJY8Hjf","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Transcribes audio files to text via a provider-neutral API, billed per call in USDC with an onchain payment receipt.","exampleAgentPrompt":"Please transcribe this audio recording to text — pay with USDC and make sure I get an onchain receipt for the transaction.","exampleUseCases":[{"title":"Meeting recording transcription","prompt":"Transcribe this 10-minute meeting recording for me and give me the full text so I can turn it into meeting notes — pay with USDC and get me the receipt."},{"title":"Podcast episode archival","prompt":"I have an audio file of today's podcast episode — can you convert the speech to text so I can publish a transcript on the website? Use the onchain router and pay in USDC."},{"title":"Multilingual voice note conversion","prompt":"Transcribe this voice note I recorded into written text. I want to use ElevenLabs scribe through the provider-neutral router and have the payment handled in USDC."}],"resultDescription":"Returns a JSON object containing a unique transcription ID (e.g. 'trns_example'), the full transcribed text string, the model used (e.g. 'elevenlabs/scribe-v2'), and usage stats including input audio duration in milliseconds. Payment is settled in USDC onchain and a durable receipt is issued.","failureModes":["Unsupported audio format or corrupt file returns an error","Audio file too long or too large exceeds processing limits","Insufficient USDC balance causes payment failure before transcription","Network or provider outage returns 5xx error","Empty or silent audio file may return empty text or low-confidence result"],"whenToPreferThis":"Choose this endpoint when you need audio-to-text transcription and want to pay per call in USDC with an onchain receipt, rather than managing a subscription or API key with a traditional provider. Ideal for agents that need auditability of AI spend via blockchain receipts, or when operating in a crypto-native payment context. The 0% service fee launch promotion makes it cost-competitive with direct provider access.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":3,"lastUsedAt":"2026-09-05T14:47:11.068Z","lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:26:54.409Z","isFirstParty":false}