# YouTube Transcript Fetcher

> YouTube Transcript Fetcher is a paid API for AI agents from x402.orthogonal.com, paid per call via x402, $0.04/call, status unknown (last checked 2026-10-15).

Fetches the full transcript of a YouTube video given its video ID or URL, with optional language selection.

## Facts

- Endpoint: POST https://x402.orthogonal.com/fiber/v1/youtube/transcript?utm_source=zero.xyz
- Price: $0.04/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/youtube-transcript-fetcher-c5154ac2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oVUB601pgZw-OJUES6I37

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability youtube-transcript-fetcher-c5154ac2 -d '<json body>'
```

Example prompt: Can you grab the transcript of this YouTube video — https://www.youtube.com/watch?v=dQw4w9WgXcQ — in English?

## When to prefer this

Choose this endpoint when you need to extract the spoken text or captions from a specific YouTube video, especially when you want to support multiple languages via BCP-47 codes. It is ideal for agents that need to summarize, analyze, translate, or archive YouTube video content without downloading the video file itself.

## Known failure modes

- Video ID not found or invalid — returns an error indicating the video does not exist
- No transcript available for the requested language code — may return empty or fall back to another language
- Video has disabled captions or transcripts — returns an error indicating transcripts are unavailable
- Invalid YouTube URL format — parsing failure or bad request error
- Rate limiting or payment failure — returns 402 Payment Required if x402 payment is not processed

## How this service works

Fetches the transcript of a YouTube video.

## Output

The agent receives the full text transcript of the specified YouTube video, broken into timestamped or continuous segments of spoken content, in the requested language if available.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "videoId": {
   "type": "string",
   "description": "YouTube video ID or full URL."
  },
  "languageCode": {
   "type": "string",
   "description": "BCP-47 language code (e.g. 'en', 'es')."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/youtube-transcript-fetcher-c5154ac2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.orthogonal.com](https://www.zero.xyz/host/x402.orthogonal.com/llms.txt)