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YouTube is the largest video library on the web, and the official Data API comes with a daily quota, OAuth hurdles and no transcript endpoint — the thing an agent most often needs. Through AgentKey your agent reads public YouTube data the same way it reads everything else — find_tools, describe_tool, execute_tool — with several providers behind the scenes, so one route failing does not stop the task.

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What you can ask

  • “Find the most viewed videos about ‘vibe coding’ uploaded this month.”
  • “Transcribe this YouTube video and give me the key points.”
  • “What do the comments on this video say — is the reaction positive?”
  • “List the latest uploads and Shorts from the MKBHD channel.”
  • “What is trending on YouTube right now?”
  • “Get this channel’s description and subscriber count from its handle.”
  • “Show me videos related to this one.”
  • “What has this channel posted on its Community tab lately?”

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What’s covered

Videos
  • Keyword search with language, upload-date, duration and sort filters; a separate search for Shorts
  • Video detail by ID; related videos; trending videos
  • Stream information and a signed stream URL for playback
  • Search suggestions for expanding a query
Comments
  • Top-level comments with sorting and locale options, paginated
  • Replies under a comment thread
Transcripts and captions
  • The caption tracks available for a video, returned as SRT, XML, JSON3 or plain text
  • Spoken-text transcript extraction, with an asynchronous job mode for videos that take longer to process
Channels
  • Channel information and description; channel ID from a URL or handle, and the channel URL back from an ID
  • A channel’s videos, Shorts and Community posts
  • Channel search

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How to use it

Pass the request in plain language and let the router pick the tool:
Both English and Chinese phrasing work, and the platform’s usual English and Chinese names all land here. Always describe_tool before executing — parameters and per-call costs differ between providers.
Building with code? The same capability is available as fixed-contract Scenario Methods with automatic provider failover: social.youtube.post.search, social.youtube.post.get, social.youtube.post.comments, social.youtube.post.transcript, social.youtube.user.get, social.youtube.user.posts, social.youtube.user.search, social.youtube.link.resolve.

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FAQ

No. AgentKey holds the upstream access; your agent only needs your AgentKey subscription.
Caption tracks are returned when YouTube has them, whether uploaded by the creator or auto-generated, and the transcript route extracts the spoken text. A video with no captions and no extractable speech returns nothing to transcribe.
No. Only public videos, comments and channels are available; results reflect what YouTube returns at request time.