{"uid":"cap_xXFRCttTdtpZ7OFSB5p9I","slug":"synthora-wikidata-entity-search-wbsearchentities-02a39779","name":"SYNTHORA Wikidata Entity Search (wbsearchentities)","description":"Resolves a text label to ranked Wikidata entity IDs (Q-numbers) with labels and descriptions across languages. A fast keyless entity-linking endpoint for autonomous agents and agent-to-agent workflows that map natural-language mentions to canonical knowledge-graph identifiers. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.","url":"https://wikidata-entity-search.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"query":{"type":"string","description":"query"}}},"responseSchema":{"type":"json","example":{"ok":true,"niche":"wikidata-entity-search","result":{"ok":false,"error":"Missing query parameter","niche":"wikidata-entity-search","result":{},"provenance":{}},"provenance":{"url":"https://www.wikidata.org/w/api.php","source":"Wikidata Entity Search (wbsearchentities)"}}},"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_ssEkC-yFMuntQfvsQOaC4","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":"Resolves a natural-language text label to ranked Wikidata entity IDs (Q-numbers) with labels and descriptions, enabling entity linking to canonical knowledge-graph identifiers.","exampleAgentPrompt":"Look up 'Marie Curie' on Wikidata and give me her Q-number along with the top ranked entity descriptions so I can confirm the right one.","exampleUseCases":[{"title":"Named entity linking in NLP pipeline","prompt":"I've extracted the entity 'Mercury' from a science article — can you search Wikidata to get the top ranked Q-numbers and descriptions so I can figure out whether it refers to the planet, the element, or the Roman god?"},{"title":"Knowledge graph enrichment for a dataset","prompt":"I have a list of company names and I need their Wikidata Q-numbers to enrich my dataset — start with 'Tesla' and return the ranked matches with labels and descriptions."},{"title":"Resolving historical figure for agent reasoning","prompt":"What is the Wikidata entity ID for 'Ada Lovelace'? I need the Q-number and description to anchor my agent's reasoning about her contributions to computing."}],"resultDescription":"A JSON object containing an 'ok' boolean, a ranked list of Wikidata entity candidates each with their Q-number identifier, human-readable label, and short description, plus provenance information indicating the result came from the Wikidata wbsearchentities API.","failureModes":["Missing query parameter returns ok:false with error 'Missing query parameter' and empty result","Ambiguous or very short queries may return many low-confidence candidates requiring downstream disambiguation","Entity not in Wikidata returns an empty result list","Network or upstream Wikidata API unavailability causes service errors","Non-Latin or rare-language queries may return fewer or lower-quality matches"],"whenToPreferThis":"Prefer this endpoint when an AI agent needs to map a natural-language entity mention to a canonical Wikidata Q-number for downstream knowledge-graph operations, structured data enrichment, or agent-to-agent workflows. It is keyless and fast, making it ideal for high-frequency entity-linking tasks in autonomous pipelines. Choose it over direct Wikidata API calls when you need a metered, x402-compatible microservice with predictable per-call pricing and no API key management.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:33:26.709Z","isFirstParty":false}