Enum StreamChunk 

pub enum StreamChunk {
    Text(String),
    ToolUse {
        id: String,
        name: String,
    },
    ToolInputDelta {
        id: String,
        partial_json: String,
    },
    ToolCall {
        call_id: String,
        response_id: String,
        chat_id: Option<String>,
        tool_name: String,
        server: String,
        parameters: Value,
    },
    Usage(Usage),
    Done,
}

Streaming chunk from a chat completion

Variants

Text(String)

Text delta

ToolUse

Tool use started.

Fields

id: String

Unique tool use identifier.

name: String

Name of the tool being invoked.

ToolInputDelta

Tool input delta (partial JSON streaming).

Fields

id: String

Tool use identifier this delta belongs to.

partial_json: String

Partial JSON fragment.

ToolCall

Tool call request from backend (for client-side execution).

Fields

call_id: String

Unique call identifier.

response_id: String

Response identifier for correlating results.

chat_id: Option<String>

Chat session identifier, if any.

tool_name: String

Name of the tool to execute.

server: String

MCP server name hosting the tool.

parameters: Value

Parameters for the tool call.

Usage(Usage)

Usage statistics (usually sent at the end)

Done

Stream completed

Trait Implementations

impl Clone for StreamChunk

fn clone(&self) -> StreamChunk

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamChunk

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

Formats the value using the given formatter.