{"uid":"cap_2h9e5dPIwPqLA9y8KnLeO","slug":"api-transcribe-3dd2487e","name":"x402engine — Pay-per-call APIs for AI Agents","description":"108 production APIs behind HTTP 402 micropayments. 72 LLMs, Kling V3 and Hailuo video generation, image generation, code execution, travel search, web scraping, TTS, and transaction simulation. Pay with USDC on Base, USDm on MegaETH, or USDC on Solana.","url":"https://x402engine.app/api/transcribe","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","bodyType","body","method"],"properties":{"body":{"type":"object","anyOf":[{"required":["audio_url"]},{"required":["audio_base64"]}],"properties":{"audio_url":{"type":"string","example":"https://example.com/audio.mp3","description":"URL of audio file to transcribe (provide audio_url OR audio_base64, not both)"},"audio_base64":{"type":"string","example":"data:audio/mp3;base64,SGVsbG8=","description":"Base64-encoded audio data with MIME type prefix (provide audio_url OR audio_base64, not both)"},"audio_mimetype":{"type":"string","example":"audio/mp3","description":"MIME type when using audio_base64 (e.g. audio/mp3, audio/wav)"}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_8jt2qvYdcD-Lc1IPEfcZA","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":null,"exampleAgentPrompt":null,"exampleUseCases":null,"resultDescription":null,"failureModes":null,"whenToPreferThis":null,"instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:41:55.471Z","isFirstParty":false}