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srch.best Knowledge Search
x402
srch.best Knowledge Search is a paid API for AI agents from x402.srch.best, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Returns structured knowledge data (encyclopedia-style facts and entities) for a given query, billed per request via x402 micropayment
Price / call$0.001
Success—
StatusUnknown
How this service works
Structured knowledge data for agents, paid per request with x402 v2
Output
An array of structured knowledge records matching the query, each containing factual entity-level data (names, descriptions, attributes, relationships). Results are paginated using an opaque cursor for continuation, returned in the specified language (default English), with up to 25 records per call.
Example use cases
Entity background for research agent
“I'm building a report on Marie Curie — can you pull structured knowledge facts about her, up to 10 results in English?”
Fact-check support for writing tool
“I need verified structured knowledge about the theory of general relativity to fact-check an article — give me the top 5 results in English.”
Knowledge enrichment for company profiles
“Can you fetch structured knowledge data about the United Nations, up to 8 results, so I can enrich a company intelligence dashboard?”
Technical details
Endpoint
POSThttps://x402.srch.best/knowledgeWhen to prefer
Choose this endpoint when you need structured, entity-level factual knowledge data rather than raw web search results. It is ideal when an agent requires clean, machine-readable knowledge records (similar to a knowledge graph or encyclopedia) rather than scraped web pages. Prefer it over the sibling live web search endpoint when you want normalized, structured facts rather than ranked URLs or snippets. Best for enrichment, reasoning, and fact-checking tasks where structured output is more useful than prose.
Side effects
- Query too short (< 2 chars) or too long (> 300 chars) returns validation error
- Limit exceeds maximum of 25 returns parameter error
- Invalid or expired cursor returns pagination error
- Payment failure via x402 prevents request from being fulfilled
- No matching knowledge records returns empty results array
- Unsupported language code may return fallback or empty results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | |
| query | string | |
| cursor | string | Opaque continuation cursor returned by the previous response. |
| language | string |
Tags
x402
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