export type LogLevel = 'info' | 'warn' | 'error' | 'debug';
export declare function redactSecrets(value: unknown, seen?: WeakSet<object>, depth?: number): unknown;
export declare class Logger {
    private static log;
    static info(message: string, data?: unknown, context?: Record<string, unknown>): void;
    static warn(message: string, data?: unknown, context?: Record<string, unknown>): void;
    static error(message: string, data?: unknown, context?: Record<string, unknown>): void;
    static debug(message: string, data?: unknown, context?: Record<string, unknown>): void;
    /**
     * 记录 API 请求
     */
    static logAPIRequest(method: string, url: string, params?: Record<string, unknown>, duration?: number): void;
    /**
     * 记录 API 响应
     */
    static logAPIResponse(method: string, url: string, status: number, duration?: number, error?: string): void;
    /**
     * 记录 MCP 工具调用
     */
    static logToolCall(toolName: string, args?: Record<string, unknown>, duration?: number): void;
    /**
     * 记录 MCP 工具结果
     */
    static logToolResult(toolName: string, success: boolean, duration?: number, error?: string): void;
    /**
     * 创建带上下文的新 Logger 实例
     */
    static withContext(context: Record<string, unknown>): Logger;
    private context;
    constructor(context?: Record<string, unknown>);
    info(message: string, data?: unknown): void;
    warn(message: string, data?: unknown): void;
    error(message: string, data?: unknown): void;
    debug(message: string, data?: unknown): void;
}
export declare const logger: typeof Logger;
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