# Blockbuster.ai YouTube MP4 Downloader

> Blockbuster.ai YouTube MP4 Downloader is a paid API for AI agents from blockbuster-ai.vercel.app, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-14).

Converts a YouTube video URL or search query into a downloadable MP4 video file

## Facts

- Endpoint: POST https://blockbuster-ai.vercel.app/api/youtube-mp4
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockbuster-ai-youtube-mp4-downloader-227028d6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gc55kCuF1OgkUQywd5eef

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 blockbuster-ai-youtube-mp4-downloader-227028d6 -d '<json body>'
```

Example prompt: Download this YouTube video as an MP4 file for me: https://www.youtube.com/watch?v=dQw4w9WgXcQ

## When to prefer this

Use this endpoint when you need to programmatically download or convert a YouTube video to MP4 format via a simple API call with micropayment, especially within an agentic workflow that handles x402 payments on Base chain. Prefer this over manual downloading tools when automation and pay-per-use pricing ($0.08 USDC) is preferred.

## Known failure modes

- Invalid or non-existent YouTube URL returns error
- Video is region-locked or unavailable and cannot be fetched
- YouTube rate limiting or access restrictions cause failure
- Private or deleted videos return an error
- Query string does not resolve to a valid video
- Payment failure via x402 micropayment results in 402 response

## How this service works

115+ premium paid endpoints: Social Media, AI/ML, E-commerce, Finance, Data Intelligence, Media, Tools. x402 micropayments on Base chain.

## Output

Returns a data object containing the MP4 video download link or file data, along with a success boolean indicating whether the conversion and retrieval completed successfully.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Input parameter for the API call"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockbuster-ai-youtube-mp4-downloader-227028d6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockbuster-ai.vercel.app](https://www.zero.xyz/host/blockbuster-ai.vercel.app/llms.txt)