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Delx Commerce — Open Knowledge Search
x402
Delx Commerce — Open Knowledge Search is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Searches Wikipedia/Wikimedia open knowledge base and returns attributed snippets for a given query, billed per-result via x402/USDC.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object containing the query scope, provider (Wikimedia/Wikipedia), cache hit/miss status, language, up to 10 results each with URL, title, page ID, and snippet, plus full attribution text, license URL, and provider URL for proper downstream attribution compliance.
Example use cases
Fact-checking agent research pipeline
“Can you look up 'quantum entanglement' on Wikipedia and pull back 3 results with snippets so I can verify the facts in this article?”
Background research on historical figure
“Search open knowledge sources for 'Ada Lovelace' and get me up to 10 results with titles and snippets — I need the full attribution info too.”
Encyclopedic context for product descriptions
“Find me Wikipedia information about 'arabica coffee' — give me 5 results with snippets and make sure the license attribution is included so we can use it properly.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/open-knowledge-search?utm_source=zero.xyzWhen to prefer
Prefer this endpoint when you need quickly attributed, open-licensed encyclopedic content from Wikipedia without requiring a signup or subscription. Ideal for agents that need verifiable, citable knowledge snippets with proper license attribution (CC BY-SA 4.0) billed only per successful call. Choose this over general web search when you specifically want encyclopedic depth and guaranteed attribution metadata rather than broad web results.
Side effects
- Query too short (minLength:1 not met) or too long (maxLength:120 exceeded) — validation error
- Timeout too short or too large (must be 2–8 seconds) — validation error
- Wikipedia/Wikimedia provider unavailable — may return empty results or error
- No matching results found — returns count:0 with empty results array
- Payment failure via x402 protocol — request not processed
- Rate limiting or network timeout within the configured timeout window
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | |
| timeout | integer | |
| max_records | integer |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"cache": "miss",
"count": 1,
"query": "agentic commerce",
"scope": "open_knowledge",
"schema": "delx/open-knowledge-search/v1",
"results": [
{
"url": "https://en.wikipedia.org/wiki/Example_topic",
"title": "Example topic",
"pageid": 123,
"snippet": "A short attributed search snippet."
}
],
"language": "en",
"provider": "Wikimedia/Wikipedia",
"attribution": "Search metadata supplied by Wikimedia/Wikipedia; snippets remain under the applicable page licenses. Preserve attribution and the license link.",
"license_url": "https://creativecommons.org/licenses/by-sa/4.0/",
"max_records": 3,
"provider_url": "https://www.wikipedia.org/"
},
"tool_name": "search_open_knowledge"
}
}Tags
x402
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