{"uid":"cap_smcyjdGlXqj9KBu1GJBy5","slug":"fly-labs-youtube-transcript-api-ff9e1ac4","name":"Fly Labs YouTube Transcript API","description":"pay-per-call apis for ai agents. usdc on base via x402. no keys, no signup, no rate limits. youtube transcripts $0.03, engagement $0.02. free tools for solo builders too.","url":"https://flylabs.fun/api/agents/transcribe?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","description":"Full YouTube URL (watch, shorts, youtu.be, embed)."},"videoId":{"type":"string","pattern":"^[a-zA-Z0-9_-]{11}$","description":"11-character YouTube video ID."}}},"responseSchema":{"type":"json","example":{"source":"youtube_subs","videoId":"dQw4w9WgXcQ","transcript":{"text":"...","language":"en","wordCount":1234,"durationSec":212},"schema_version":"1.0"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_BEN0aMwXgOIFL7J9WeIiF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches the full text transcript of a YouTube video given its URL or video ID, paid per-call via USDC on Base.","exampleAgentPrompt":"Can you get me the full transcript of this YouTube video: https://www.youtube.com/watch?v=dQw4w9WgXcQ?","exampleUseCases":null,"resultDescription":"Returns a JSON object containing the transcript text, detected language code, word count, duration in seconds, the resolved video ID, and a source field indicating how the transcript was obtained (e.g. youtube_subs).","failureModes":["Video has no captions or subtitles available — returns an error or empty transcript","Invalid or malformed YouTube URL/video ID — returns a 4xx validation error","Video is private or age-restricted and captions cannot be accessed","Network or upstream YouTube availability issue causing timeout or 5xx error","Payment failure or insufficient USDC balance preventing the x402 call from completing"],"whenToPreferThis":"Choose this endpoint when an AI agent needs the spoken content of a YouTube video as text, without requiring an API key or account setup. It is ideal for lightweight, pay-per-call workflows where the agent needs to summarize, analyze, or quote video content. Prefer this over speech-to-audio-transcription services when the video already has captions/subtitles, as it is faster and cheaper at $0.03 per call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":1,"lastUsedAt":"2026-06-16T17:31:50.466Z","lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T18:38:27.745Z","isFirstParty":false,"canonicalSlug":"fly-labs-youtube-transcript-api-ff9e1ac4"}