Formations

Partially implemented

Formations are an area of Murmur that is only partly built out. Agent Card discovery and A2A messaging between capsules, described below, are live today.

Agent Card & A2A messaging

While an agent session is active, the runtime serves a small HTTP endpoint exposing an Agent Card (/.well-known/agent-card.json) and a JSON-RPC 2.0 task interface, so other capsules or agents can discover the capsule and hand it a task. An incoming message reserves an active task slot (Empty → Running → Done); acceptance depends on the capsule's lifecycle.task_acceptance setting (see Capsule lifecycle). See Connect two capsules with A2A messaging for the full protocol and examples.