Enum SdkMessage 

pub enum SdkMessage {
    System {
        subtype: SystemSubtype,
        session_id: String,
        data: Value,
    },
    Assistant {
        content: Vec<ContentBlock>,
        stop_reason: Option<String>,
    },
    User {
        content: Vec<ContentBlock>,
    },
    Result {
        subtype: ResultSubtype,
        result: Option<String>,
        total_cost_usd: Option<f64>,
        usage: Option<UsageInfo>,
        num_turns: u32,
        session_id: String,
        stop_reason: Option<String>,
    },
}

Streamed message types in turn order.

Matches SystemMessage / AssistantMessage / UserMessage / ResultMessage from the Claude Agent SDK. We do not emit StreamEvent (token deltas) — the loop runs in non-streaming mode.

Variants

System

Lifecycle event. Init carries session metadata.

Fields

subtype: SystemSubtype

session_id: String

data: Value

Assistant

One assistant turn — text and/or tool_use blocks. The final assistant message in a successful run has no tool_use blocks.

Fields

content: Vec<ContentBlock>

stop_reason: Option<String>

User

One synthetic user turn carrying tool_result blocks back to the model.

Fields

content: Vec<ContentBlock>

Result

Terminal message. result is Some only when subtype = Success.

Fields

subtype: ResultSubtype

result: Option<String>

total_cost_usd: Option<f64>

usage: Option<UsageInfo>

num_turns: u32

session_id: String

stop_reason: Option<String>

Implementations

impl SdkMessage

pub fn is_terminal(&self) -> bool

True for the terminal Result message.

Trait Implementations

impl Clone for SdkMessage

fn clone(&self) -> SdkMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SdkMessage

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SdkMessage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SdkMessage

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

where __S: Serializer,

Serialize this value into the given Serde serializer.