A2A 1.0 endpoint with task results, streaming and push notifications
On the platform: A2A channels now speak A2A 1.0, chosen by the
A2A-Version header, with 0.3 still available. Completed tasks carry the
agent’s answer as artifacts, so clients such as the a2a CLI read the result
back. SendMessage waits for the result by default; pass returnImmediately
to follow the task with GetTask, SubscribeToTask or a push notification.
ListTasks is supported, and push notification configs receive the full task
when it settles.
In code: the a2a feature of everruns-serve answers A2A 1.0 for every
top-level agent at POST /v1/e/{agent}/a2a, the same paths an Everruns A2A
endpoint uses.