Struct Step 

pub struct Step {
    pub purpose: String,
    pub kind: StepKind,
    pub action: PlannedAction,
}

One executable unit inside a batch.

A step wraps exactly one PlannedAction plus the metadata the agent loop needs: why we’re doing it (for failure reports) and whether the LLM is required to execute it.

Fields

purpose: String

Natural-language description of what this step accomplishes. Used in FailureReport.failing_step and in LLM-assisted retry prompts as “you are trying to: {purpose}”.

kind: StepKind

Tells the executor whether it can run the step without an LLM call at all. Deterministic steps (e.g. a navigate to a known URL, a wait, a shell-style activate_app) skip the LLM. That is the biggest latency win — every deterministic step saves a full plan round-trip.

Tolerant to LLM drift: if the model emits an unknown value (e.g. confuses the step-level kind with the action-level type and writes "kind": "cdp_eval"), we default to Deterministic rather than failing the whole batch parse. That’s right almost always — the action itself carries the real semantics — and it’s robust to prompt drift.

action: PlannedAction

The action to execute.

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.