Struct WorkerPayload 

pub struct WorkerPayload {
    pub task_id: StepId,
    pub attempt: u32,
    pub agent: String,
    pub system: Option<String>,
    pub prompt: String,
    pub context: Option<AgentContextView>,
    pub system_ref: Option<SystemRef>,
}

Response body for HTTP /v1/worker/prompt — the shape that lets a SubAgent pull its task input in a single round-trip.

• system: the rendered AgentDef.profile.system_prompt (None when the profile is absent, or when it was baked but is delivered by reference instead — see system_ref below).
• prompt: TaskSpec.initial_directive rendered to String at this boundary (issue #18). The engine stores initial_directive as Value end-to-end (EngineState.prompts / Engine::fetch_prompt); the coercion to String (strings verbatim, anything else serde-stringified) happens here in Engine::fetch_worker_payload* because the /v1/worker/prompt HTTP wire format is a plain string.
• agent: TaskSpec.agent — the agent name this dispatch is targeting.
• attempt: the 1-based attempt number, matching the current task.attempt.
• context: GH #20 Contract C — the materialized crate::core::agent_context::AgentContextView for this (task_id, attempt), when AgentContextMiddleware was layered onto the spawner stack that dispatched it. None on pre-#20 payloads (backward compat) and whenever the middleware was never layered.
• system_ref: GH #31 — populated instead of system when the baked system_prompt exceeds the server’s configured size threshold. See SystemRef.

Fields

task_id: StepId

The task this payload was fetched for. Typed StepId since issue #14 — serde keeps the wire shape a plain string.

attempt: u32

1-based attempt number, matching the current task.attempt.

agent: String

Name of the agent this dispatch is targeting.

system: Option<String>

Rendered system prompt, if the agent profile defines one.

prompt: String

The task’s initial directive, baked in at dispatch preparation.

context: Option<AgentContextView>

GH #20 Contract C: the materialized task-level context view — see the struct doc above.

system_ref: Option<SystemRef>

GH #31: by-reference alternative to system when the baked system_prompt exceeds the server’s SystemRefConfig.threshold_bytes. Exactly one of system / system_ref is ever Some when a system_prompt was baked for this dispatch — never both Some, never both None in that case. Absent (both None) only when no system_prompt was baked at all (pre-existing system: None semantics, unchanged).

Trait Implementations

impl Clone for WorkerPayload

fn clone(&self) -> WorkerPayload

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WorkerPayload

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WorkerPayload

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for WorkerPayload

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for WorkerPayload

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for WorkerPayload

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 WorkerPayload