Trait NestedSpawnHandler 

pub trait NestedSpawnHandler: Send + Sync {
    // Required method
    fn spawn_nested<'life0, 'life1, 'async_trait>(
        &'life0 self,
        child_session_id: &'life1 str,
        request: Value,
    ) -> Pin<Box<dyn Future<Output = Result<Value, String>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
}

Fulfils a child worker’s nested SubAgent spawn request on the host (Phase 6: nested execution). When a child wants a grandchild, its host.subagent_call arrives as a ChildFrame::SubagentRequest; an implementation runs the real spawn (parenting the grandchild under the requesting child) and returns the SubAgent tool’s result JSON. With no handler wired the host replies with a graceful error so the child’s tool fails cleanly instead of hanging.

Required Methods

fn spawn_nested<'life0, 'life1, 'async_trait>( &'life0 self, child_session_id: &'life1 str, request: Value, ) -> Pin<Box<dyn Future<Output = Result<Value, String>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Run a nested SubAgent spawn requested by child_session_id; request is the SubAgent tool-call body. Returns the tool-result JSON, or an error string (surfaced to the child as a failed tool result).

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors