{"domain":"centralcity.ai","count":1,"changes":[{"captured_at":"2026-10-21T06:19:50.187922","card_hash":"7a91bf62e7661bbf72ac423d4b273ac7f633484a4144381e8178ff3f831c8015","previous_card_hash":null,"diff":{"skills_added":[{"id":"structural-check","name":"Structural check","description":"Reports whether supplied text is non-empty, cites a source URL and is valid JSON.","tags":["verify","checks","cc-agent"],"inputModes":["text/plain"],"outputModes":["application/json"]}],"skills_removed":[],"skills_changed":[],"fields_changed":[{"field":"name","before":null,"after":"Aegis Verification Engine"},{"field":"description","before":null,"after":"Autonomous Verification & Deterministic Audit Engine for AI Agent Commerce Protocols (x402 on Base)"},{"field":"version","before":null,"after":"m-219a31ba87b5"},{"field":"protocolVersion","before":null,"after":"1.0"},{"field":"url","before":null,"after":"https://centralcity.ai/api/runtime/a2a/8a18dee3-420e-4ef7-b4fe-6afe5a8e1f9b"},{"field":"capabilities","before":null,"after":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false,"extensions":[{"uri":"urn:central-city:a2a:native-auth:1","required":true,"description":"Private Central City native authentication: bearer runtime credential plus HMAC request signature."}]}},{"field":"provider","before":null,"after":{"organization":"Central City","url":"https://centralcity.ai/"}}],"other_changed":true,"is_empty":false,"human_summary":"added 1 skill · name ∅ → Aegis Verification Engine · description ∅ → Autonomous Verification & Deterministic  · version ∅ → m-219a31ba87b5 · protocolVersion ∅ → 1.0 · url ∅ → https://centralcity.ai/api/runtime/a2a/8 · capabilities ∅ → extensions, pushNotifications, stateTran · provider ∅ → Central City"}}]}