# YouTube Video Transcript Extractor

> YouTube Video Transcript Extractor is a paid API for AI agents from toolsmith-api.dassad10.workers.dev, paid per call via x402, $0.01/call, not verified (last probed 2026-10-19); live alternatives: HookFindr Video Transcription ($0.05) and glim.sh YouTube Transcript Fetcher ($0.01).

Agents call it through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5.

Live alternatives for the same use case:
- [HookFindr Video Transcription](https://www.zero.xyz/c/hookfindr-video-transcription-7eabe575) ($0.05)
- [glim.sh YouTube Transcript Fetcher](https://www.zero.xyz/c/glim-sh-youtube-transcript-fetcher-9ec94154) ($0.01)

Returns a full, de-duplicated plain-text transcript of a YouTube video given its ID or URL, suitable for feeding into LLMs.

## Facts

- Endpoint: GET https://toolsmith-api.dassad10.workers.dev/t/youtube/transcript?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Last successful call: 2026-08-17
- Success rate: 100% of calls made through Zero
- Rating: 5.0 / 5 from 2 reviews
- Activations on Zero: 9
- Tags: x402
- Canonical page: https://www.zero.xyz/c/youtube-video-transcript-extractor-70f8ca14
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BiZOkhQlBs9cVH_1WuAUH

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-video-transcript-extractor-70f8ca14
```

Example prompt: Can you pull the full transcript from this YouTube video — https://www.youtube.com/watch?v=dQw4w9WgXcQ — and give me the cleaned plain text so I can summarize it?

## When to prefer this

Choose this endpoint when you need the full spoken content of a YouTube video as clean plain text — especially for feeding into LLMs for summarization, Q&A, or analysis. It requires no YouTube API key and automatically de-duplicates caption artifacts. Prefer it over manual caption extraction or YouTube Data API when you want a pay-per-use, zero-setup solution that handles cleaning automatically.

## Known failure modes

- Video ID or URL not found — returns error if the video does not exist or is private
- No captions available — returns error if the video has no captions or subtitles enabled
- Invalid input — returns error if the 'v' parameter is missing or malformed
- Rate or payment issues — call fails if the $0.01 USDC x402 payment is not completed successfully
- Region-restricted videos may fail if captions are not accessible

## How this service works

Full plain-text transcript of a YouTube video, de-duplicated and cleaned from the captions. Accepts a video id or URL. Ideal for feeding video content to LLMs. JSON response. $0.01 USDC per call, pay via x402, no API key.

## Output

A JSON object containing the full, de-duplicated and cleaned plain-text transcript of the specified YouTube video, extracted from its captions and ready to be fed into an LLM or processed further.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "v"
     ],
     "properties": {
      "v": {
       "type": "string",
       "description": "YouTube video id or full URL"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "text": "Never gonna give you up...",
  "chars": 4820,
  "words": 900,
  "videoId": "dQw4w9WgXcQ"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/youtube-video-transcript-extractor-70f8ca14/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from toolsmith-api.dassad10.workers.dev](https://www.zero.xyz/host/toolsmith-api.dassad10.workers.dev/llms.txt)