{"event":{"id":"evt-2025q2-a2a","dedupe_key":"historical_material_change:2025-04-09:a2a-protocol-is-announced","event_type":"historical_material_change","title":"A2A protocol is announced","summary":"Google launches an open agent communication protocol with an initial partner ecosystem.","occurred_at":"2025-04-09T00:00:00.000Z","published_at":"2025-04-09T00:00:00.000Z","observed_at":"2026-10-10T06:24:42.000Z","reconstructed_at":"2026-10-10T06:24:42.000Z","ingest_type":"live_world_scan","locations":null,"status":"verified","confidence":0.96,"metadata":{"what_happened_at_time":"Google launches an open agent communication protocol with an initial partner ecosystem.","what_must_not_be_inferred":"Protocol publication does not prove universal interoperability or shared authorization.","availability_status":"protocol_release","affected_layers":["layer-agents","layer-software","layer-open-source"],"epistemic_status":"observed_fact","reported_capabilities_are_actor_claims":true,"time_precision":"day"},"created_at":"2026-10-10T08:25:19.349Z","updated_at":"2026-10-10T08:25:19.349Z"},"artifacts":[{"id":"art-2025q2-a2a","dedupe_key":"9e5903377fd6e01532604655c564a5daabac317b7b235e0d2939e526c8e17b79","canonical_url":"https://cloud.google.com/blog/topics/partners/best-agentic-ecosystem-helping-partners-build-ai-agents-next25","evidence_locator":"","artifact_type":"official_announcement","title":"A2A protocol is announced","summary":"Google launches an open agent communication protocol with an initial partner ecosystem.","creator_entities":["Google Cloud"],"released_at":"2025-04-09T00:00:00.000Z","content_hash":null,"metadata":{"historical_scope":"2025-Q2","availability_status":"protocol_release"},"created_at":"2026-10-10T08:25:19.343Z","updated_at":"2026-10-10T08:25:19.343Z","relation":"documented_by"}],"signals":[{"id":"sig-2025q2-a2a","statement":"Google launches an open agent communication protocol with an initial partner ecosystem. Protocol publication does not prove universal interoperability or shared authorization.","signal_type":"historical_layer_delta","direction":"increasing","confidence":0.9,"epistemic_status":"supported_inference","mapping_mode":"retrospective","reconstructed_at":"2026-10-10T06:24:42.000Z","created_at":"2026-10-10T08:25:19.355Z","updated_at":"2026-10-10T08:25:19.355Z"}]}