Struct Step 

pub struct Step {
    pub trajectory_id: String,
    pub step_index: u32,
    pub state: StepUpdateState,
    pub source: StepUpdateSource,
    pub target: StepUpdateTarget,
    pub kind: StepKind,
    pub text: String,
    pub thinking: String,
    pub text_delta: String,
    pub error_message: Option<String>,
    pub update: StepUpdate,
}

Available on crate feature async-client only.

A step, merged across every update the harness has sent for it.

Fields

trajectory_id: String

The trajectory this step belongs to. The main conversation and each subagent get their own.

step_index: u32

Position within the trajectory.

state: StepUpdateState

Lifecycle state as of this update.

source: StepUpdateSource

Who produced the step.

target: StepUpdateTarget

Who it is addressed to.

kind: StepKind

What the step is doing.

text: String

Text accumulated so far, deltas included.

thinking: String

Reasoning accumulated so far, deltas included.

text_delta: String

Only the text that arrived in this update, for incremental rendering.

error_message: Option<String>

Failure detail, when Self::state is StepUpdateState::Error.

update: StepUpdate

The frame this snapshot came from, for anything the summary omits.

Implementations

impl Step

pub fn id(&self) -> String

A stable key for this step: "{trajectory_id}:{step_index}".

pub fn is_final(&self) -> bool

True once the harness will not update this step again.

pub fn text(&self) -> Option<&str>

The accumulated text, if there is any.

pub fn user_facing_text(&self) -> Option<&str>

Text addressed to the user, as opposed to the model or the environment.

This is the filter to use when rendering a conversation: it drops the echo of the user’s own input and the agent’s tool chatter.

Trait Implementations

impl Clone for Step

fn clone(&self) -> Step

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Step

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

Formats the value using the given formatter.