/**
 * QA360 MCP Audit Logger
 * Logs all tool calls for security and compliance
 */
export interface AuditConfig {
    enabled: boolean;
    logPath: string;
}
export interface AuditEntry {
    timestamp: number;
    tool: string;
    args: any;
    result: any;
    success: boolean;
    duration_ms: number;
    client_info?: {
        pid?: number;
        cwd?: string;
    };
}
export declare class AuditLogger {
    private config;
    private logPath;
    constructor(config: AuditConfig);
    /**
     * Log a tool call
     */
    logToolCall(toolName: string, args: any, result: any, success: boolean, startTime?: number): Promise<void>;
    /**
     * Get recent audit entries
     */
    getRecentEntries(limit?: number): Promise<AuditEntry[]>;
    /**
     * Get audit statistics
     */
    getAuditStats(): Promise<{
        totalCalls: number;
        successRate: number;
        topTools: Array<{
            tool: string;
            count: number;
        }>;
        recentErrors: AuditEntry[];
    }>;
    /**
     * Clear old audit entries
     */
    rotateLog(maxEntries?: number): Promise<void>;
    /**
     * Sanitize data for audit logging (remove sensitive info)
     */
    private sanitizeForAudit;
    /**
     * Check if key contains sensitive information
     */
    private isSensitiveKey;
    /**
     * Resolve path with home directory expansion
     */
    private resolvePath;
    /**
     * Ensure log directory exists
     */
    private ensureLogDirectory;
}
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