Struct Step 

pub struct Step {
    pub step_id: u64,
    pub timestamp: Option<String>,
    pub source: StepSource,
    pub model_name: Option<String>,
    pub message: Option<String>,
    pub reasoning_content: Option<String>,
    pub tool_calls: Option<Vec<AtifToolCall>>,
    pub observation: Option<Observation>,
    pub metrics: Option<StepMetrics>,
    pub extra: Option<Value>,
}

Individual interaction step.

Fields

step_id: u64

Ordinal index (starting from 1).

timestamp: Option<String>

ISO 8601 timestamp.

source: StepSource

Originator of this step.

model_name: Option<String>

LLM model used for this step (agent steps only).

message: Option<String>

Step content — text message or array.

reasoning_content: Option<String>

Agent internal reasoning content.

tool_calls: Option<Vec<AtifToolCall>>

Tool/function invocations (agent steps only).

observation: Option<Observation>

Environment feedback after actions.

metrics: Option<StepMetrics>

LLM operational metrics (agent steps only).

extra: Option<Value>

Custom step-level metadata.

Implementations

impl Step

pub fn user(step_id: u64, message: impl Into<String>) -> Self

Create a user step.

pub fn agent(step_id: u64, message: impl Into<String>) -> Self

Create an agent step.

pub fn system(step_id: u64, message: impl Into<String>) -> Self

Create a system step.

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.

impl<'de> Deserialize<'de> for Step

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Step

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

where __S: Serializer,

Serialize this value into the given Serde serializer.