Knowledge summary API: the lead summary of any English Wikipedia article — title, short description, extract paragraph, thumbnail, and canonical URL — as structured JSON. Titles accept spaces or underscores; missing pages return an unpaid 404. Use for entity enrichment, fact grounding, and research agents. CC BY-SA 4.0 with attribution in every response. Cached 24 hours.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.003000 USDC | 0x8503...9432 |