Agent Client Protocol - v1.8.0
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    Type Alias SubagentCapabilitiesExperimental

    UNSTABLE

    This capability is not part of the spec yet, and may be removed or changed at any point.

    Capability marker for exposing reusable child sessions as restricted ACP sessions.

    Supplying {} advertises support for child association and state updates, session-directed messages, and restricted-session semantics. The client must advertise this capability before the agent sends subagent updates or session-directed messages.

    type SubagentCapabilities = {
        _meta?: { [key: string]: unknown } | null;
    }
    Index
    _meta?: { [key: string]: unknown } | null

    The _meta property is reserved by ACP to allow clients and agents to attach additional metadata to their interactions. Implementations MUST NOT make assumptions about values at these keys.