{"uid":"cap_x2v3W-cWhIjyqvvV8AP_n","slug":"p0-agent-economy-index-wikipedia-knowledge-search-b70e2d16","name":"P0 Agent Economy Index – Wikipedia Knowledge Search","description":"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.","url":"https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/knowledge/search?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD"],"type":"string"},"queryParams":{"type":"object","required":["q"],"properties":{"q":{"type":"string","maxLength":200,"minLength":2,"description":"search query: a topic, name or question"},"lang":{"enum":["en","de","fr","es","it","pt","ru","ja","zh","pl","nl","uk","ar","fa","sv","ko","id","tr","vi","he","cs","fi","no","hu","ro"],"type":"string","default":"en","description":"Wikipedia language edition"},"limit":{"type":"integer","default":5,"maximum":10,"minimum":1,"description":"number of articles"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["query","lang","count","results","attribution","note"],"properties":{"lang":{"type":"string"},"note":{"type":"string"},"count":{"type":"integer"},"query":{"type":"string"},"source":{"type":"object","properties":{"api":{"type":"string"},"name":{"type":"string"},"cached":{"type":"boolean"},"fetchedAt":{"type":"string"}}},"results":{"type":"array","items":{"type":"object","required":["rank","title","url","license","licenseUrl"],"properties":{"url":{"type":"string"},"rank":{"type":"integer"},"title":{"type":"string"},"pageId":{"type":["integer","null"]},"extract":{"type":["string","null"]},"license":{"type":"string"},"historyUrl":{"type":["string","null"]},"licenseUrl":{"type":"string"},"wikidataId":{"type":["string","null"]},"attribution":{"type":"string"},"description":{"type":["string","null"]},"lastTouched":{"type":["string","null"]},"wikidataUrl":{"type":["string","null"]},"lastRevisionId":{"type":["integer","null"]},"descriptionSource":{"type":["string","null"]}}}},"attribution":{"type":"object","required":["text","license","licenseUrl"]}}}}}}},"responseSchema":{"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/"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_3fN1V4U0t3Aa7CFgYzkhH","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Searches Wikipedia articles by query and returns ranked encyclopedic extracts with metadata and attribution","exampleAgentPrompt":"Search Wikipedia for 'quantum entanglement' and give me the top 3 results in English with their summaries.","exampleUseCases":[{"title":"Background research on a historical figure","prompt":"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."},{"title":"Multilingual encyclopedia lookup","prompt":"Search Wikipedia in French for 'intelligence artificielle' and return the top 5 articles with their descriptions."},{"title":"Quick fact-check on a technical concept","prompt":"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."}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T00:37:10.185Z","isFirstParty":false,"canonicalSlug":"p0-agent-economy-index-wikipedia-knowledge-search-b70e2d16"}