/**
 * Anthropic Messages API 类型定义（最小化）
 * 仅定义代理层需要用到的类型：请求体（用于 model 覆盖）和 SSE 事件白名单
 */
/** Anthropic Messages API 请求体（代理层关注的字段） */
export interface AnthropicMessagesRequest {
    model: string;
    max_tokens: number;
    messages: Array<{
        role: 'user' | 'assistant';
        content: string | Array<Record<string, unknown>>;
    }>;
    system?: string | Array<Record<string, unknown>>;
    stream?: boolean;
    temperature?: number;
    top_p?: number;
    top_k?: number;
    stop_sequences?: string[];
    tools?: Array<Record<string, unknown>>;
    tool_choice?: Record<string, unknown>;
    thinking?: Record<string, unknown>;
    metadata?: {
        user_id?: string;
    };
}
/** Anthropic SSE 标准事件类型白名单 */
export declare const ANTHROPIC_SSE_EVENTS: Set<string>;
/** Anthropic 响应中的 token 用量 */
export interface AnthropicUsage {
    input_tokens: number;
    output_tokens: number;
    cache_creation_input_tokens?: number;
    cache_read_input_tokens?: number;
}
/** Anthropic 非流式响应（代理层关注的字段） */
export interface AnthropicMessagesResponse {
    id: string;
    type: 'message';
    role: 'assistant';
    content: Array<Record<string, unknown>>;
    model: string;
    stop_reason: string | null;
    stop_sequence: string | null;
    usage: AnthropicUsage;
}
/** Anthropic 错误响应 */
export interface AnthropicErrorResponse {
    type: 'error';
    error: {
        type: string;
        message: string;
    };
    request_id?: string;
}
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