Enum StreamMessage 

pub enum StreamMessage {
    System {
        subtype: String,
        session_id: Option<String>,
        tools: Option<Vec<String>>,
        model: Option<String>,
    },
    Assistant {
        message: Value,
    },
    User {
        message: Value,
        tool_use_result: Option<Value>,
    },
    Result {
        subtype: String,
        total_cost_usd: Option<f64>,
        error: Option<String>,
        result_text: Option<String>,
    },
    Unknown,
}

Relevant fields from Claude Code’s stream-json output. Protocol is undocumented — derived from testing Claude Code. Uses #[serde(other)] to gracefully ignore unknown message types.

Variants

System

Fields

subtype: String

session_id: Option<String>

tools: Option<Vec<String>>

model: Option<String>

Assistant

Fields

message: Value

User

Fields

message: Value

tool_use_result: Option<Value>

Result

Fields

subtype: String

total_cost_usd: Option<f64>

error: Option<String>

result_text: Option<String>

Unknown

Catch-all for unknown types — prevents deserialization failures.

Trait Implementations

impl Debug for StreamMessage

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StreamMessage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.