The target agent's MJ: AI Agents ID (loop or flow — transparent to the co-agent).
OptionaldisclosurePer-target disclosure override; falls back to the effective default disclosure.
OptionallabelFriendly label used in the manifest / disclosure narration ("Skip", "Query Builder").
A delegation target the lead co-agent may invoke via
invoke_agent. Allowed targets are union-accumulated across cascade layers (type, co-agent, target, app) plus dynamic (channel-registered) additions — NOT array-replaced — by accumulateAllowedAgents.