{"uid":"cap_zTELK9dkXPPpKLHklv-_V","slug":"alfred-x402-audio-transcription-46a377d7","name":"ALFRED x402 Audio Transcription","description":"Self-hosted personal-assistant paid tools via Lightning. Uses x402-shaped protocol (L402 lineage): HTTP 402 with a Lightning invoice in the response body + WWW-Authenticate header, retry with X-Payment-Hash: <hex> once paid. Results cached per payment_hash so legitimate retries don't cost twice.","url":"https://x402.wallace.us/x402/transcribe","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string"}}},"responseSchema":{"type":"object","additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","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":"$0.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_i-TcrYjUjT4Mi2s3KWe2L","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Transcribes audio from a URL into text, paid per-call via Lightning/x402 protocol at $0.50 USDC","exampleAgentPrompt":"Can you transcribe the audio at https://example.com/meeting-recording.mp3 into text for me?","exampleUseCases":null,"resultDescription":"A JSON object containing the transcribed text derived from the audio file at the provided URL. Results are cached per payment hash so retrying after a successful payment returns the same transcript without additional charges.","failureModes":["Invalid or inaccessible audio URL — endpoint cannot fetch or decode the file","Payment not completed — HTTP 402 returned with Lightning invoice; must pay and retry with X-Payment-Hash header","Unsupported audio format — file format not recognized by the transcription backend","Audio file too large or too long — may time out or return an error","Stale or expired Lightning invoice — payment window passed, must request a new invoice"],"whenToPreferThis":"Choose this endpoint when you need audio-to-text transcription and are operating in a Lightning/x402 micropayment context, or when you want a self-hosted solution rather than a major cloud provider. At $0.50 USDC per call it is cost-effective for occasional transcription. Prefer this over cloud alternatives when privacy or decentralized payment is a priority.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:38:53.747Z","isFirstParty":false}