Struct EvalScore 

pub struct EvalScore {
    pub evaluator: String,
    pub value: f64,
    pub label: ScoreLabel,
    pub layer: EvalLayer,
    pub timing: EvalTiming,
    pub explanation: Option<String>,
    pub session_id: String,
    pub run_id: Option<String>,
}

A single evaluation score.

Designed to map directly to an OpenTelemetry gen_ai.evaluation.result span event.

Fields

evaluator: String

Name of the evaluator that produced this score (e.g. token_efficiency).

value: f64

Normalized score value in [0.0, 1.0]. Higher is better.

label: ScoreLabel

Categorical label (e.g. “good”, “warning”, “critical”).

layer: EvalLayer

Which layer of agent behavior this evaluates.

timing: EvalTiming

Whether this was computed inline or async.

explanation: Option<String>

Optional human-readable explanation.

session_id: String

Session ID this score belongs to.

run_id: Option<String>

Run ID within the session (if applicable).

Implementations

impl EvalScore

pub fn new( evaluator: impl Into<String>, value: f64, layer: EvalLayer, timing: EvalTiming, session_id: impl Into<String>, ) -> NousResult<Self>

Create a new score, validating the value is in [0.0, 1.0].

pub fn with_explanation(self, explanation: impl Into<String>) -> Self

Set the explanation.

pub fn with_run_id(self, run_id: impl Into<String>) -> Self

Set the run ID.

Trait Implementations

impl Clone for EvalScore

fn clone(&self) -> EvalScore

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EvalScore

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EvalScore

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<&EvalScore> for ScoreSummary

fn from(score: &EvalScore) -> Self

Converts to this type from the input type.

impl Serialize for EvalScore

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.