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P0 Agent Economy Index – Wikipedia Knowledge Search
x402
P0 Agent Economy Index – Wikipedia Knowledge Search is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-18).
Searches Wikipedia articles by query and returns ranked encyclopedic extracts with metadata and attribution
Price / call$0.001
Success—
StatusUnknown
How this service works
An open index of the machine-to-machine (agent) economy. x402 routes: ranked discovery over the live x402 service market, every indexed service scored by real 30-day calls and paying-wallet bounds, with a receipt naming the snapshot hash and scoring revision. /economy routes, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry): each protocol's published figures (agent or server counts, transactions or payment events; payers and USD volume only where the source publishes them: payers for x402 and Tempo MPP, USD volume for x402 and Virtuals ACP), each with its unit, window and source; units differ, so totals are not summed. L402 and per-service MPP listings are not covered.
Output
A JSON object containing the search query, language, result count, source metadata (API endpoint, cache status, fetch timestamp), an array of ranked Wikipedia articles each with title, URL, page ID, plain-text extract (up to 1200 chars), Wikidata ID and URL, license, last revision ID and date, and attribution text for reuse compliance.
Example use cases
Background research on a historical figure
“Can you look up Ada Lovelace on Wikipedia and give me a brief summary of who she was? Top 2 results in English should be fine.”
Multilingual encyclopedia lookup
“Search Wikipedia in French for 'intelligence artificielle' and return the top 5 articles with their descriptions.”
Quick fact-check on a technical concept
“Search Wikipedia for 'proof of work' and pull the top result so I can get the encyclopedic definition and a link to the full article.”
Technical details
Endpoint
GEThttps://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/knowledge/search?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured, attributed encyclopedic information from Wikipedia with Wikidata linkage, multilingual support, and machine-readable license metadata — especially when downstream reuse compliance (CC BY-SA 4.0) is required. Prefer over general web search when encyclopedic sourcing and stable article references matter.
Side effects
- No results found for obscure or misspelled queries
- Query too short (under 2 characters) returns validation error
- Unsupported language code returns error
- Wikipedia API unavailable causes upstream failure
- Rate limiting or payment failure at $0.001 USDC per call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"lang": "en",
"note": "Encyclopedic search over Wikipedia articles (not a general web search engine). Results are ranked by Wikipedia's own search. Check the linked article for current details.",
"count": 1,
"query": "bitcoin",
"source": {
"api": "https://en.wikipedia.org/w/api.php",
"name": "Wikipedia (en)",
"cached": false,
"fetchedAt": "2026-10-06T10:12:30.000Z"
},
"results": [
{
"url": "https://en.wikipedia.org/wiki/Bitcoin",
"rank": 1,
"title": "Bitcoin",
"pageId": 28249265,
"extract": "Bitcoin (abbreviation: BTC; sign: ₿) is the first decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 when an unknown person published a white paper under the pseudonym of Satoshi Nakamoto.",
"license": "CC BY-SA 4.0",
"historyUrl": "https://en.wikipedia.org/w/index.php?curid=28249265&action=history",
"licenseUrl": "https://creativecommons.org/licenses/by-sa/4.0/",
"wikidataId": "Q131723",
"attribution": "\"Bitcoin\" from Wikipedia (en), https://en.wikipedia.org/wiki/Bitcoin, by its contributors, CC BY-SA 4.0",
"description": "Decentralized digital cryptocurrency",
"lastTouched": "2026-10-05T18:54:53Z",
"wikidataUrl": "https://www.wikidata.org/wiki/Q131723",
"lastRevisionId": 1378636617,
"descriptionSource": "wikipedia"
}
],
"attribution": {
"text": "Text from Wikipedia, the free encyclopedia, by its contributors (authors: see each result's historyUrl), licensed under CC BY-SA 4.0; reuse of these extracts must keep the same licence and credit. Wikidata IDs are CC0. P0 is not affiliated with or endorsed by the Wikimedia Foundation.",
"changes": "Plain-text extract of the lead section (first 3 sentences, at most 1200 characters); formatting, links and references removed.",
"license": "CC BY-SA 4.0",
"licenseUrl": "https://creativecommons.org/licenses/by-sa/4.0/",
"wikidataLicense": "CC0 1.0",
"wikidataLicenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/"
}
}
}Tags
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