{"uid":"cap_2EqUq-g_BZPoqZZmEFUjU","slug":"quantaflow-youtube-video-transcript-api-07d227be","name":"QuantaFlow YouTube Video Transcript API","description":"Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.","url":"https://quanta-roan.vercel.app/api/service/serp-youtube-video-transcript?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"body":{"type":"string","description":"Optional JSON body forwarded to POST requests."},"path":{"type":"string","description":"Path below the selected upstream origin."},"query":{"type":"object"},"method":{"enum":["GET","POST"],"type":"string"}}},"responseSchema":{"description":"The upstream response body and content type are passed through after successful payment."},"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_H1o6OJAci5l9bu8SJCzZr","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":"Fetches the transcript (captions/subtitles) of a YouTube video given its identifier, via a pay-per-call x402 gateway.","exampleAgentPrompt":"Can you get me the full transcript of this YouTube video — https://www.youtube.com/watch?v=dQw4w9WgXcQ — so I can read what was said?","exampleUseCases":[{"title":"Summarize a YouTube lecture","prompt":"Grab the transcript from this YouTube lecture — https://www.youtube.com/watch?v=abc123xyz — and give me a bullet-point summary of the main points covered."},{"title":"Quote-check a YouTube interview","prompt":"Pull the transcript for the YouTube video at https://www.youtube.com/watch?v=interview456 and find any exact quotes where the speaker talks about climate change."},{"title":"Create blog post from video","prompt":"Get the transcript of my YouTube video https://www.youtube.com/watch?v=myvideo789 so I can turn it into a written blog article."}],"resultDescription":"Returns the full text transcript of the specified YouTube video, typically as a sequence of caption segments (which may include timestamps and speaker cues depending on the upstream provider). The raw response is passed through from the upstream SERP/transcript service after payment is processed.","failureModes":["Video has no available captions or transcript — returns an error or empty result","Invalid or non-existent YouTube video ID — upstream returns a 404 or error","Video is age-restricted or private — upstream cannot access transcript","Payment failure via x402 protocol — request is rejected before reaching upstream","Rate limiting or upstream service outage — returns a 5xx or timeout","Malformed query parameters — request fails validation before reaching upstream"],"whenToPreferThis":"Choose this endpoint when you need to programmatically extract the spoken text from a YouTube video, especially in an AI agent workflow that accepts pay-per-call micropayments via x402/USDC. It is well-suited for one-off transcript fetches where you want to avoid maintaining a YouTube Data API quota or OAuth credentials. At $0.01 USDC per call it is cost-effective for low-to-medium volume transcript extraction tasks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:50:55.405Z","isFirstParty":false,"canonicalSlug":"quantaflow-youtube-video-transcript-api-07d227be"}