{"uid":"cap_HkqLpQYwBTGAEGg8p72I0","slug":"baron-power-play-speech-to-text-stt-5ded5772","name":"Baron Power Play Speech-to-Text (STT)","description":"Pay-per-call AI infrastructure for autonomous agents. USDC on Base, settled by Coinbase. No API key, no account, no subscription.","url":"https://baron-power-play.baronpowerplay.workers.dev/stt?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"tags":["speech","speech-to-text","audio","transcription","agents"],"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["title","description","input","output"],"properties":{"tags":{"type":"array","items":{"type":"string"},"description":"Machine-readable discovery categories for directory search and ranking."},"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object"},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"title":{"type":"string"},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{}},"additionalProperties":false},"description":{"type":"string"}},"additionalProperties":false},"responseSchema":{"type":"json","example":{"text":"Buy bitcoin at this level","alpha_keywords_found":[{"keyword":"buy","char_index":0}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_XioIrd5RP-5ADAN_ijI8R","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Transcribes audio to text and extracts alpha (actionable signal) keywords from the transcript, paid per-call via USDC on Base with no account required.","exampleAgentPrompt":"Transcribe this audio clip and pull out any alpha keywords like 'buy' or 'sell' signals from what's being said — pay the $0.01 USDC fee per call, no account needed.","exampleUseCases":[{"title":"Trading signal extraction from podcast","prompt":"Listen to this audio snippet from a crypto podcast and tell me if anyone mentions buy or sell signals — transcribe it and flag any alpha keywords with their positions in the text."},{"title":"Voice note keyword detection","prompt":"I recorded a voice memo with some investment ideas — can you transcribe it and highlight any actionable keywords like 'buy', 'sell', or 'hold' and where they appear?"},{"title":"Autonomous agent audio monitoring","prompt":"My agent is monitoring audio feeds for market signals — transcribe this audio and return any alpha keywords found so I can trigger the next step in the workflow."}],"resultDescription":"Returns a JSON object containing the full transcribed text of the audio input and an array of alpha_keywords_found objects, each with the matched keyword string and its character index position within the transcript.","failureModes":["Missing required fields (title, description, input, output) returns a validation error","Unsupported audio format or unreadable body may result in empty transcript","Insufficient USDC balance or payment failure results in HTTP 402 Payment Required","Malformed JSON body returns a 400 error","No alpha keywords present returns an empty array for alpha_keywords_found"],"whenToPreferThis":"Choose this endpoint when you need pay-per-call, no-account speech-to-text with built-in alpha keyword extraction in a single call — ideal for autonomous agents operating on Base/USDC infrastructure that need both transcription and signal detection without managing API keys or subscriptions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T18:37:19.428Z","isFirstParty":false,"canonicalSlug":"baron-power-play-speech-to-text-stt-5ded5772"}