Struct NonEmptyAnswer 

pub struct NonEmptyAnswer;

The cheapest check there is: the turn produced something.

This is the shape that prompted the whole idea — no tool calls, no text, just reasoning the model narrated to itself and then stopped. Left unchecked, that monologue gets handed back as the answer.

Trait Implementations

impl Acceptance for NonEmptyAnswer

fn name(&self) -> &str

Short name, for logs.

fn check<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, ctx: &'life1 Context, _world: &'life2 World, ) -> Pin<Box<dyn Future<Output = Verdict> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Consulted when the model has stopped asking for tools. ctx carries the task and the whole transcript; world is the filesystem and friends.