PLATFORMS Signal 174
Build Cross-Language Multi-Agent Team with Google’s Agent Development Kit and A2A
↗
Monolithic agents fail in production because adding tools degrades context and entangles failure modes, making the system untestable. Decomposing these agents into specialized services connected by A2A allows teams to use the best language for the job while isolating failures and maintaining testability.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
The A2A protocol enables agent discovery through Agent Cards at `/.well-known/agent.json` and communication via JSON-RPC 2.0 methods like `message/send` and `tasks/send`.
Google's Agent Development Kit provides a `RemoteA2aAgent` abstraction that allows a local agent to treat a remote A2A-compliant service as a sub-agent.
Every A2A interaction is wrapped in a Task that transitions through defined states such as submitted, working, completed, or failed to handle both synchronous and asynchronous workflows.
THE CLUSTER