Enum LoopbackEvent 

pub enum LoopbackEvent {
    Chunk(String),
    Flush,
    FullMessage(String),
    Status(String),
    ToolStart(Box<ToolStartData>),
    ToolOutput(Box<ToolOutputData>),
    Usage {
        input_tokens: u64,
        output_tokens: u64,
        context_window: u64,
    },
    SessionTitle(String),
    Plan(Vec<(String, PlanItemStatus)>),
    ThinkingChunk(String),
    Stop(StopHint),
}

Events emitted by the agent side toward the A2A caller.

Variants

Chunk(String)

Flush

FullMessage(String)

Status(String)

ToolStart(Box<ToolStartData>)

Emitted immediately before tool execution begins.

ToolOutput(Box<ToolOutputData>)

Usage

Token usage from the last LLM turn.

Fields

input_tokens: u64

output_tokens: u64

context_window: u64

SessionTitle(String)

Generated session title (emitted after the first agent response).

Plan(Vec<(String, PlanItemStatus)>)

Execution plan update.

ThinkingChunk(String)

Thinking/reasoning token chunk from the LLM.

Stop(StopHint)

Non-default stop condition detected by the agent loop.

Emitted immediately before Flush. When absent, the stop reason is EndTurn.

Trait Implementations

impl Clone for LoopbackEvent

fn clone(&self) -> LoopbackEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LoopbackEvent

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

Formats the value using the given formatter.