Enum Message 

pub enum Message {
    System {
        content: MessageContent,
        name: Option<String>,
    },
    User {
        content: MessageContent,
        name: Option<String>,
    },
    Assistant {
        content: Option<String>,
        audio: Option<AssistantAudio>,
        refusal: Option<String>,
        name: Option<String>,
        prefix: bool,
        reasoning_content: Option<String>,
        tool_calls: Option<Vec<AssistantToolCall>>,
    },
    Tool {
        content: MessageContent,
        tool_call_id: String,
    },
    Function {
        content: String,
        name: String,
    },
    Developer {
        content: MessageContent,
        name: Option<String>,
    },
}

Variants

System

In this case, the role of the message author is system. The field { role = "system" } is added automatically.

Fields

content: MessageContent

The contents of the system message: plain text, or an array of text content parts.

name: Option<String>

An optional name for the participant.

Provides the model information to differentiate between participants of the same role.

User

In this case, the role of the message author is user. The field { role = "user" } is added automatically.

Fields

content: MessageContent

The contents of the user message: plain text, or an array of multimodal content parts (text, image_url, input_audio, file).

name: Option<String>

An optional name for the participant.

Provides the model information to differentiate between participants of the same role.

Assistant

In this case, the role of the message author is assistant. The field { role = "assistant" } is added automatically.

Fields

content: Option<String>

The contents of the assistant message. Required unless tool_calls or function_call is specified. (Note that function_call is deprecated in favour of tool_calls.)

audio: Option<AssistantAudio>

Data about a previous audio response from the model. Required for multi-turn audio conversations.

refusal: Option<String>

The refusal message by the assistant.

name: Option<String>

prefix: bool

DeepSeek (Beta): set this to true to force the model to start its answer by the content of the supplied prefix in this assistant message. Requires base_url = "https://api.deepseek.com/beta".

reasoning_content: Option<String>

DeepSeek (Beta): used for the thinking mode in the Chat Prefix Completion feature as the input for the CoT in the last assistant message. When using this feature, prefix must be set to true.

tool_calls: Option<Vec<AssistantToolCall>>

The tool calls generated by the model, such as function calls.

Tool

In this case, the role of the message author is assistant. The field { role = "tool" } is added automatically.

Fields

content: MessageContent

The contents of the tool message: plain text, or an array of text content parts.

tool_call_id: String

Tool call that this message is responding to.

Function

In this case, the role of the message author is function. The field { role = "function" } is added automatically.

Fields

content: String

The contents of the function message.

name: String

The name of the function to call.

Developer

In this case, the role of the message author is developer. The field { role = "developer" } is added automatically.

Fields

content: MessageContent

The contents of the developer message: plain text, or an array of text content parts.

name: Option<String>

An optional name for the participant.

Provides the model information to differentiate between participants of the same role.

Trait Implementations

impl Clone for Message

fn clone(&self) -> Message

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Message

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

Formats the value using the given formatter.

impl Serialize for Message

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.