Enum LlmStreamEvent 

pub enum LlmStreamEvent {
    TextDelta(String),
    ThinkingDelta(String),
    ThinkingSignature(String),
    ReasonItem {
        provider: String,
        model: Option<String>,
        item_id: String,
        encrypted_content: Option<String>,
        summary: Vec<String>,
        token_count: Option<u32>,
    },
    ToolCalls(Vec<ToolCall>),
    Done(Box<LlmCompletionMetadata>),
    Error(LlmStreamError),
}

Events emitted during LLM streaming

Variants

TextDelta(String)

Text delta (incremental content)

ThinkingDelta(String)

Thinking delta (incremental reasoning content from extended thinking models)

ThinkingSignature(String)

Cryptographic signature for thinking content (Anthropic Claude) Emitted when a thinking block completes, before the Done event

ReasonItem

Opaque assistant reasoning response item (OpenAI Responses). Carries provider-supplied opaque/encrypted reasoning artifacts plus safe summary text and per-item metadata. Plaintext hidden reasoning content is intentionally excluded so callers can persist this without exposing chain-of-thought.

Fields

provider: String

Provider name (e.g., “openai”).

model: Option<String>

Model identifier reported by the provider, if known.

item_id: String

Provider-assigned identifier for the reasoning item.

encrypted_content: Option<String>

Provider-encrypted reasoning context, if supplied.

summary: Vec<String>

Safe summary text segments curated by the provider.

token_count: Option<u32>

Per-item reasoning token count, when the provider reports one.

ToolCalls(Vec<ToolCall>)

Tool calls from the LLM

Done(Box<LlmCompletionMetadata>)

Streaming completed

Error(LlmStreamError)

Error during streaming

Trait Implementations

impl Clone for LlmStreamEvent

fn clone(&self) -> LlmStreamEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LlmStreamEvent

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

Formats the value using the given formatter.