{"openapi":"3.1.0","info":{"title":"UK Charity Verify","version":"1.0.0","description":"Pay-per-call UK charity registration verification for AI agents via x402 (Base mainnet). Data: Charity Commission for England and Wales register extract, OGL v3.0.","contact":{"email":"support@example.com"}},"paths":{"/verify":{"post":{"summary":"Verify a UK charity by number or name","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"number":{"type":"string","example":"202918","description":"Registered charity number."},"name":{"type":"string","example":"Oxfam","description":"Charity name to look up."}}}}}},"responses":{"200":{"description":"Charity verification result with audit receipt"},"400":{"description":"Invalid input"},"402":{"description":"Payment required (x402)"},"404":{"description":"No matching charity found"}}}}}}