# Blockbuster.ai YouTube to MP3 Converter

> Blockbuster.ai YouTube to MP3 Converter 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 to a downloadable MP3 audio file given a video URL or search query

## Facts

- Endpoint: POST https://blockbuster-ai.vercel.app/api/youtube-mp3
- 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-to-mp3-converter-1e7dba7b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ckvEkf9GCm_-8WscsGKT2

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-to-mp3-converter-1e7dba7b -d '<json body>'
```

Example prompt: Can you convert this YouTube video to an MP3 for me? Here's the link: https://www.youtube.com/watch?v=dQw4w9WgXcQ

## When to prefer this

Use this endpoint when you need to programmatically convert a YouTube video to MP3 audio and are already operating within the x402 micropayment ecosystem on Base chain; suitable for agents that need audio extraction without managing their own YouTube scraping infrastructure.

## Known failure modes

- Invalid or non-existent YouTube URL returns an error
- Video is age-restricted or region-blocked and cannot be processed
- YouTube removes or blocks the video before processing completes
- Query string doesn't resolve to a valid YouTube video
- Rate limiting or payment failure returns a 402 or 429 error
- Service unavailable on Vercel deployment returns 5xx

## 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 an object with a success boolean and a data object containing the MP3 download link or audio data extracted from the specified YouTube video.

## 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-to-mp3-converter-1e7dba7b/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)