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YouTube Thumbnail Expander
x402
YouTube Thumbnail Expander is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.15/call, status unknown (last checked 2026-10-23).
Fetches and returns a full-resolution YouTube video thumbnail image URL along with its dimensions
Price / call$0.15
Success—
StatusUnknown
How this service works
817 pay-per-call APIs for AI agents. Every endpoint is POST /<name> and is payable in USDC over x402 on Base and Solana — no signup, no API key, just pay-per-call. GET https://x402.agentutility.ai/ returns the same catalog as machine-readable JSON.
Output
Returns a JSON object with the resolved thumbnail image URL (e.g. a high-res PNG hosted on YouTube's CDN), plus the width (e.g. 1280) and height (e.g. 720) of the thumbnail image.
Example use cases
Example prompt
“Can you get me the full-resolution thumbnail image URL, width, and height for this YouTube video: https://www.youtube.com/watch?v=dQw4w9WgXcQ?”
Technical details
Endpoint
POSThttps://x402.agentutility.ai/youtube-thumbnail-expand?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically resolve a YouTube video's thumbnail image URL and dimensions from a video URL or ID, especially in agent workflows that need to display or process video preview images. Prefer this over manual construction of YouTube thumbnail URLs when you need verified dimensions and a confirmed accessible URL.
Side effects
- Invalid or malformed YouTube URL/ID returns an error response
- Video is private or deleted — thumbnail may not be available
- YouTube CDN changes may cause stale or broken image URLs
- Rate limits or upstream YouTube access issues causing fetch failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"width": 1280,
"height": 720,
"image_url": "https://...png"
}
}Tags
x402
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