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AgentIndex x402 Web Search
x402
AgentIndex x402 Web Search is a paid API for AI agents from x402.agentindex.world, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Pay-per-call web search endpoint that runs one or more queries and returns ranked results with optional page extracts and synthesized summaries.
Price / call$0.01
Success—
StatusUnknown
How this service works
Read and search the web for AI agents. Nothing else. A pay-per-call kit for AI agents in USDC on Base (x402/MPP): search, pdf, web-read, extract, summarize, fact-check, 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 original query and an array of results, each with a URL, title, optional publication date, and (if requested) a cleaned page extract stripped of navigation and boilerplate. When summarize is enabled, a short synthesized answer string is also included. Results from multi-query calls are merged and deduplicated by URL.
Example use cases
Real-time competitive research
“Search the web for 'OpenAI GPT-5 release date announcement' and 'Claude 4 release', merge those two queries, and give me a synthesized summary of what's been reported — up to 5 results.”
Product recommendation lookup
“Can you search for 'best ergonomic office chairs under $500' and return the top 10 results with a short summary and the cleaned text from each page so I can compare options?”
Breaking news retrieval
“Look up 'Federal Reserve interest rate decision today' and give me a synthesized answer and up to 5 links — I need the latest news, not cached info.”
Technical details
Endpoint
POSThttps://x402.agentindex.world/searchWhen to prefer
Choose this endpoint when your agent needs live web search results not available in its training data, especially when you want to run up to 5 related queries in a single pay-per-call request and deduplicate by URL. The optional extract and summarize flags make it particularly useful when you need not just links but actual page content and a synthesized answer in one round-trip. Prefer it over generic search APIs when operating in an x402 pay-per-call agent infrastructure context.
Side effects
- Payment failure or insufficient USDC balance returns a 402 error before the search executes
- Invalid query type (e.g. array with more than 5 items) returns a validation error
- No results found for obscure or very recent queries returns an empty results array
- Network timeouts when fetching page extracts for certain URLs may result in missing extract fields
- Rate limiting may occur under high request volume
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | — | Search query, or an array of up to 5 related queries to run in one call - results are merged and de-duplicated by URL. |
| extract | boolean | Include a cleaned page extract for each result, navigation and boilerplate removed. |
| summarize | boolean | Also return a short synthesized answer summarizing the results. |
| max_results | integer | Maximum number of results to return. |
Output
Schema · Response
{
"type": "json",
"example": {
"query": "best ramen restaurants in Shibuya Tokyo",
"results": [
{
"url": "https://www.eater.com/maps/best-ramen-tokyo-japan",
"date": null,
"title": "The Best Ramen in Tokyo: 16 Restaurants to Not Miss | Eater",
"extract": "A curated guide to Tokyo's standout ramen shops, including several in Shibuya..."
}
]
}
}Tags
x402
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