A2A task states, event streams, and recovery
Message and Task responses, streaming events, connection recovery, and migration considerations for clients and servers.
A2A Protocol community
A2A defines a protocol for agents to discover capabilities, exchange messages, and collaborate on tasks. This community provides protocol explanations, development guides, and collaboration examples.
Message and Task responses, streaming events, connection recovery, and migration considerations for clients and servers.
Describe capabilities, interfaces, and security requirements, with field validation and optional signatures.
Compare requests, responses, and error mappings across JSON-RPC, gRPC, and HTTP+JSON, including differences between v0.3 and v1.0.
A coordinating agent sends a ticket to an analysis agent, supplies additional information, and queries its status and results. The example covers A2A task handoff and MCP tool access within the analysis agent.
Protocol interaction examples; not tested end to end.
Read the collaboration exampleSendMessageGetTaskIdentity checks, permissions, and in-task authorization for agent interactions.
Webhook URL validation on the sender; source authentication, task scope, and duplicate handling on the receiver.
Message deduplication, stream recovery, task persistence, and implementation trade-offs.
SDKs for Python, Go, Java, JavaScript, C#/.NET, and Rust, with repository links and version notes.
Code examples for clients, servers, and framework integrations.
Inspect and debug A2A interactions between agents.
Test implementations against A2A protocol requirements.