Module host 

Session host for nested agent runs (dynamic multi-agent delegation).

Limits (fail-closed)

• agent_budget — absolute number of admitted spawns for this host
• max_spawn_depth — max nesting index (depth on SpawnOpts); depth >= max rejects
• max_concurrent_children — simultaneous in-flight spawns (try-acquire; no queue)

Structs

AgentRunResult

Result of a nested agent run.

InProcessHost

In-process host: nested TurnRuntime with shared sampler, tool pool, and limits.

SpawnOpts

Options for spawning a nested agent.

Constants

DEFAULT_MAX_CONCURRENT_CHILDREN

Default max concurrent in-flight nested agents.

DEFAULT_MAX_SPAWN_DEPTH

Default max nesting depth for nested agents (0..DEFAULT_MAX_SPAWN_DEPTH).

Traits

SessionHost

Host capable of spawning nested agents.