Enum AgentEvent 

pub enum AgentEvent {
    ToolStart {
        tool_name: String,
        tool_call_id: String,
        input: Value,
    },
    ToolComplete {
        tool_name: String,
        tool_call_id: String,
        result: ToolResult,
    },
    ToolError {
        tool_name: String,
        tool_call_id: String,
        error: String,
    },
    Thinking {
        turn: u32,
    },
    Done {
        result: QueryResult,
    },
    MessageStart {
        message_id: String,
    },
    ContentBlockStart {
        index: u32,
        block_type: String,
    },
    ContentBlockDelta {
        index: u32,
        delta: ContentDelta,
    },
    ContentBlockStop {
        index: u32,
    },
    MessageStop,
    RequestStart,
    MaxTurnsReached {
        max_turns: u32,
        turn_count: u32,
    },
    Tombstone {
        message: String,
    },
}

Agent event types for streaming updates (matches TypeScript behavior)

Variants

ToolStart

Tool is about to be executed

Fields

tool_name: String

tool_call_id: String

input: Value

ToolComplete

Tool execution completed

Fields

tool_name: String

tool_call_id: String

result: ToolResult

ToolError

Tool execution failed

Fields

tool_name: String

tool_call_id: String

error: String

Thinking

LLM is thinking (started a new turn)

Fields

turn: u32

Done

Final response ready

Fields

result: QueryResult

MessageStart

Message started (streaming begins)

Fields

message_id: String

ContentBlockStart

Content block started (matches TypeScript StreamEvent content_block_start)

Fields

index: u32

block_type: String

ContentBlockDelta

Content block delta (matches TypeScript StreamEvent content_block_delta)

Fields

index: u32

delta: ContentDelta

ContentBlockStop

Content block stopped (matches TypeScript StreamEvent content_block_stop)

Fields

index: u32

MessageStop

Message stopped (streaming ends)

RequestStart

Request started (before API call) - matches TypeScript ‘stream_request_start’

MaxTurnsReached

Max turns reached - matches TypeScript ‘max_turns_reached’ attachment

Fields

max_turns: u32

turn_count: u32

Tombstone

Tombstone event for orphaned messages on streaming fallback (matches TypeScript ‘tombstone’ event)

Fields

message: String

Trait Implementations

impl Clone for AgentEvent

fn clone(&self) -> AgentEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AgentEvent

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

Formats the value using the given formatter.