//! Canonical AI message roles.
use serde::{Deserialize, Serialize};
/// Canonical AI message role.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
#[non_exhaustive]
pub enum Role {
/// System/developer instruction.
System,
/// End-user message.
User,
/// Assistant/model message.
Assistant,
/// Tool result message.
Tool,
}