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Harness

ag_harness

Struct Harness 

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pub struct Harness { /* private fields */ }
Expand description

Application-facing harness for one complete model turn.

A turn advertises policy-approved tools, executes validated native calls, returns tool results to the model, and finishes with locally validated structured output.

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impl Harness

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pub fn new(model: impl Model + 'static) -> Self

Creates a deny-by-default harness backed by the local filesystem.

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pub fn repository(self, repository_root: impl Into<PathBuf>) -> Self

Roots repository-scoped tools at repository_root.

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pub fn allow(self, tool: Tool) -> Self

Enables one built-in tool for model requests.

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pub fn file_system(self, file_system: impl FileSystem + 'static) -> Self

Replaces the local filesystem implementation.

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pub fn max_tool_calls(self, max_tool_calls: NonZeroUsize) -> Self

Overrides the maximum number of native calls allowed in one turn.

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pub async fn run( &self, prompt: impl Into<String>, schema: OutputSchema, ) -> Result<Value, TurnError>

Runs one prompt through tool execution to terminal structured output.

§Errors

Returns TurnError when the model fails, requests a denied tool, exceeds the call limit, or the requested repository read fails.

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more