Struct Message 

pub struct Message {
    pub role: Role,
    pub content: MessageContent,
    pub name: Option<String>,
    pub metadata: Option<Value>,
}

A message in the conversation

Fields

role: Role

Role of the message sender

content: MessageContent

Content of the message

name: Option<String>

Optional name for the message sender (useful for multi-agent conversations)

metadata: Option<Value>

Optional metadata

Implementations

impl Message

pub fn user<S: Into<String>>(content: S) -> Self

Create a new user message

pub fn assistant<S: Into<String>>(content: S) -> Self

Create a new assistant message

pub fn system<S: Into<String>>(content: S) -> Self

Create a new system message

pub fn tool_result<S: Into<String>>(tool_use_id: S, content: S) -> Self

Create a tool result message

pub fn text(&self) -> Option<&str>

Get the text content of a message (if it’s simple text)

pub fn text_or_summary(&self) -> String

Get a text representation of the message content, including Blocks. For Text messages, returns the text directly. For Blocks messages, concatenates text from all blocks into a readable summary so that conversation history is preserved when serializing for API calls.

pub fn text_mut(&mut self) -> Option<&mut String>

Get mutable reference to the text content

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<'de> Deserialize<'de> for Message

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

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.