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SumVid Transcript API
x402
SumVid Transcript API is a paid API for AI agents from api.sumvid.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Extracts the full transcript of a YouTube video as clean plain text, supporting 105 languages
Price / call$0.005
Success—
StatusUnknown
How this service works
Full transcript of a YouTube video from its URL — captions/subtitles as clean plain text in your language. YouTube transcript, video to text, captions extraction, subtitle download, speech to text, multilingual. 105 languages supported, including English, Spanish, Portuguese, French, German, Hindi, Arabic, Chinese, Japanese, Korean, Russian, Indonesian and Vietnamese. Pay per call, no account or API key.
Output
A full plain-text transcript of the YouTube video's spoken content, extracted from available captions or subtitles, returned in the requested language. The text is clean and readable, not raw caption data with timestamps.
Example use cases
Research a video without watching
“I don't have time to watch this 45-minute YouTube lecture — can you pull the full transcript in English so I can read through it? URL is https://www.youtube.com/watch?v=abc123xyz”
Multilingual caption extraction
“Can you get me the full transcript of this YouTube video in Spanish? The video is at https://www.youtube.com/watch?v=xyz789abc”
Quote and fact-check a video
“I need the exact words from this YouTube interview to check a quote — can you extract the complete transcript in English from https://www.youtube.com/watch?v=def456ghi”
Technical details
Endpoint
POSThttps://api.sumvid.app/v1/transcriptWhen to prefer
Use this endpoint when you need the full verbatim transcript of a YouTube video rather than a summary. Prefer this over the sibling summary endpoint when you need exact quotes, want to search within the video content, need to translate specific passages, or want to process the raw text yourself. Choose this over general speech-to-text APIs when the content is already on YouTube and captions exist, as it is faster and cheaper than re-transcribing audio.
Side effects
- Video URL is invalid or not a YouTube URL — returns an error indicating unrecognized input
- Video has no available captions or subtitles — returns an error indicating no transcript available
- Requested language not available for the video — may return error or fall back to available language
- Private or age-restricted video — may return an access error
- Network timeout for very long videos
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | A YouTube video URL or ID |
| language | string | BCP-47 language code for the output (default 'en'; 105 supported, e.g. es, pt-BR, fr, de, hi, ar, zh-Hans, ja, ko, ru, id, vi) |
Tags
x402
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