{"uid":"cap_kTfrw-O24ry1q82rjcuSK","slug":"cortexcloud-audio-transcription-api-b7a13d63","name":"CortexCloud Audio Transcription API","description":"One pay-per-call API for AI agents: optimization, AI, research, on-chain data, and automation — all settled in USDC on Base via x402. Discover via MCP and Bazaar, estimate free, pay per call. No API keys, no signup.","url":"https://api.cortexcloud.org/v1/ai/transcribe","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"mime":{"type":"string","default":"audio/wav"},"audio_b64":{"type":"string"}}},"responseSchema":{"type":"object","format":"application/json","example":{"text":"...","price_usd":0.002}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_439c3vg5OjBwRACraATsz","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Transcribes base64-encoded audio into text, paid per call in USDC via x402 with no API key required","exampleAgentPrompt":"Can you transcribe this WAV audio recording I have — I'll send it as a base64 string — and give me back the text of what was said?","exampleUseCases":[{"title":"Meeting recording to text","prompt":"I recorded a team meeting as a WAV file — can you transcribe it to text so I can search through what was said? Here's the base64-encoded audio."},{"title":"Voice memo transcription","prompt":"I have a voice memo I recorded on my phone in WAV format — transcribe it to text for me. I'll give you the base64 audio data."},{"title":"Podcast clip extraction","prompt":"Can you pull out the spoken words from this audio/wav podcast clip I have encoded in base64 and give me back a text transcript?"}],"resultDescription":"A JSON object containing a 'text' field with the full transcript of the spoken audio, and a 'price_usd' field indicating the cost charged for this call (e.g. 0.002 USD).","failureModes":["Invalid or malformed base64 audio data returns an error","Unsupported MIME type may cause transcription failure","Very long audio files may time out or exceed processing limits","Payment failure via x402 if USDC balance is insufficient","Empty audio or silent recordings may return an empty text field"],"whenToPreferThis":"Choose this endpoint when you need a no-signup, pay-per-call audio transcription service settled in USDC on Base via x402, especially in agent workflows where managing API keys is undesirable. It is well-suited for AI agents that process occasional audio clips without committing to a subscription service.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:40:45.857Z","isFirstParty":false}