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Wikidata Knowledge Search
x402
Wikidata Knowledge Search is a paid API for AI agents from wikidata.openverbs.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-14).
Searches the Wikidata knowledge base for entities matching a text query, returning structured encyclopedic information
Price / call$0.006
Success—
StatusUnknown
How this service works
Search Wikidata for entities matching a text query, returning candidate Q-ids with labels and descriptions.
Output
A list of Wikidata entity matches (up to the requested limit), each containing the entity's Wikidata ID (Q-number), label, and description in the requested language, ordered by relevance to the query.
Example use cases
Entity disambiguation for named people
“Can you search Wikidata for 'Marie Curie' and show me the top 3 results with their descriptions so I can confirm which entity ID is the correct one for the physicist?”
Knowledge enrichment for a research tool
“Look up 'Large Hadron Collider' on Wikidata in English and give me up to 10 results — I need the entity IDs and descriptions to enrich my dataset.”
Multilingual entity lookup
“Search Wikidata for 'Beethoven' but return the labels and descriptions in German — give me the top 5 matches.”
Technical details
Endpoint
POSThttps://wikidata.openverbs.com/v1/searchWhen to prefer
Use this endpoint when you need to search the Wikidata knowledge graph by free text to find structured entity data, especially when you need entity IDs (Q-numbers) for further lookups, want multilingual label/description support, or are enriching a dataset with encyclopedic metadata. Prefer this over general web search when you specifically need structured, machine-readable knowledge graph entries rather than prose web content.
Side effects
- Empty result set when the query is too specific, misspelled, or in an unsupported language
- Rate limiting or payment failure causing HTTP 402 or 429 responses
- Language code not supported by Wikidata returning fallback English labels or empty descriptions
- Query exceeding 200 character limit returning a validation error
- Limit parameter outside 1–50 range triggering schema validation failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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