Struct HarnessCost 

pub struct HarnessCost {
    pub usd: f64,
    pub lower_bound: bool,
    pub as_of: Option<SystemTime>,
    pub current: bool,
}

A harness’s own running total for a session, read from its transcript. Claude Code writes one; the other harnesses do not, or (OpenCode, Kodelet) their costs are already the row’s cost_usd.

It is a different measurement from cost_usd, not a correction to it: it is priced at the harness’s private table, and it includes requests the transcript never records. Claude Code writes it when a session exits, so while a session runs it is the figure from the last exit.

Fields

usd: f64

lower_bound: bool

The harness said some of its usage had no price, so usd is a floor.

as_of: Option<SystemTime>

The timestamp of the last transcript line before the record, which carries none of its own.

current: bool

No usage has been recorded since, in the transcript or a subagent’s. False for a live session that has done anything since it last exited: usd leaves that out.

Trait Implementations

impl Clone for HarnessCost

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HarnessCost

impl Debug for HarnessCost

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

Formats the value using the given formatter.

impl Default for HarnessCost

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for HarnessCost

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for HarnessCost

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for HarnessCost

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for HarnessCost