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AgentIndex x402 Summarize
x402
AgentIndex x402 Summarize is a paid API for AI agents from x402.agentindex.world, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-16).
Fetches and summarizes a URL, raw HTML, or plain text into a concise summary of configurable length
Price / call$0.03
Success—
StatusUnknown
How this service works
Process the files and content an agent gives you. Nothing else. A pay-per-call kit for AI agents in USDC on Base (x402/MPP): pdf, web-read, extract, summarize, and the free detect-language entry point - see GET /capabilities. Plus two tools outside the kit: translate and jobs.
Output
A JSON object containing the generated summary string, the requested length label (short/medium/long), and a list of source URLs that were fetched and summarized.
Example use cases
Quick news article digest
“Summarize this news article for me in one short paragraph: https://www.bbc.com/news/world-us-canada-12345678”
Research paper overview
“Give me a long summary of the content at https://arxiv.org/abs/2301.00000 — I want about 3-4 paragraphs covering the key findings.”
Paste text for condensing
“Here's a big block of text I copied from a report — can you condense it into a medium-length summary? [long pasted text here]”
Technical details
Endpoint
POSThttps://x402.agentindex.world/summarizeWhen to prefer
Choose this endpoint when you need to turn a URL, raw HTML, or a blob of text into a human-readable summary of configurable length (short/medium/long), especially in an agent pipeline that pays per call in USDC via x402. Prefer it over general LLM summarization when you want a dedicated, pay-per-use microservice that also returns cited source URLs and handles web fetching automatically.
Side effects
- URL is unreachable or returns non-200 status — endpoint may return an error or empty summary
- Paywalled or login-gated URLs may yield incomplete or no content
- Extremely long documents may be truncated before summarization
- Providing more than one of url/text/html simultaneously is invalid and will return an error
- Empty or near-empty input content produces a trivially short or error summary
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | URL to fetch and summarize. Provide exactly one of url, text or html. |
| html | string | Raw HTML to summarize. Provide exactly one of url, text or html. |
| text | string | Raw text to summarize. Provide exactly one of url, text or html. |
| length | string | Requested summary length - short (~2 sentences), medium (~1 paragraph), long (~3-4 paragraphs). Defaults to medium. |
Output
Schema · Response
{
"type": "json",
"example": {
"length": "short",
"sources": [
"https://example.com/photosynthesis"
],
"summary": "The article explains how photosynthesis converts light energy into chemical energy in plants."
}
}Tags
x402
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