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KG-NINJA Summarize URL
x402
KG-NINJA Summarize URL is a paid API for AI agents from api.kgninja.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).
Fetches a URL and returns a structured AI-generated title and summary of the page content for $0.01 USDC per call via x402 micropayment.
Price / call$0.01
Success—
StatusUnknown
How this service works
KG-NINJA URL Summary
Output
A JSON object containing a 'title' field with the page's title and a 'summary' field with an AI-generated summary of the page content. Both are plain-text strings suitable for display or further processing.
Example use cases
Research digest from links
“I have a list of URLs from my research — can you summarize each one so I can quickly decide which ones are worth reading in full? Start with this one: https://arxiv.org/abs/2301.07041”
Newsletter content preview
“Before I share this article in my newsletter, can you give me a quick title and summary of what it covers? Here's the link: https://www.wired.com/story/ai-agents-2025”
Agent pipeline content triage
“I need to quickly understand what this page is about before deciding whether to process it further — can you fetch a summary of https://news.ycombinator.com/item?id=39842”
Technical details
Endpoint
GEThttps://api.kgninja.dev/summarize-url?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a structured title+summary extraction from a single URL with a very low per-call cost ($0.01 USDC) and machine-payable x402 protocol support. Ideal for agent pipelines that need to triage or digest web content programmatically without managing scraping infrastructure. Prefer this over general-purpose scrapers when you specifically want a pre-digested NLP summary rather than raw HTML.
Side effects
- URL is unreachable or returns a non-200 HTTP status — endpoint may return an error or empty result
- URL points to non-text content (PDF, image, video) — summary quality may degrade or fail
- Paywalled or bot-blocked pages may not return meaningful content
- Invalid URI format in the url parameter — likely a 400 bad request
- x402 payment failure if the calling agent does not handle the payment protocol correctly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string |
Output
Schema · Response
{
"type": "json",
"example": {
"title": "Example title",
"summary": "Example summary"
}
}Tags
x402
Reviews
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