Struct LoopInput 

pub struct LoopInput {
    pub instruction: String,
    pub output_contract: Option<String>,
    pub seed: Vec<(String, String)>,
    pub model: String,
    pub max_steps: u32,
    pub max_tokens: u64,
    pub deadline: Instant,
    pub cancel: Option<Arc<AtomicBool>>,
}

The explicit inputs the loop needs, independent of where they came from (CLI Config for once-mode, or a SpawnPayload for a subagent). This is the seam that lets the same loop body run in-process or in a child.

Fields

instruction: String

output_contract: Option<String>

seed: Vec<(String, String)>

Narrowed context seed as (role, content) pairs (role ∈ system|user|assistant|tool).

model: String

max_steps: u32

max_tokens: u64

deadline: Instant

cancel: Option<Arc<AtomicBool>>

A cooperative cancel flag checked at each turn boundary (set by a subagent’s control thread on ControlMsg::Cancel). None for a run with no external canceller.