import { type Tool } from '@modelcontextprotocol/client';
import type { Logger } from 'winston';
export interface MCPServerConfig {
    name: string;
    command: string;
    args?: string[];
    env?: Record<string, string>;
    timeoutMs?: number;
}
export interface ToolRegistration {
    qualifiedName: string;
    server: string;
    toolName: string;
    tool: Tool;
}
export interface MCPBridgeOptions {
    enablePII?: boolean;
    logger?: Logger;
    defaultTimeoutMs?: number;
    deniedTools?: readonly string[];
}
export declare class MCPBridge {
    private readonly configs;
    private readonly options;
    private clients;
    private toolRegistry;
    private piiTokenizer?;
    private toolDiscoveryCache;
    private configByServer;
    constructor(configs: MCPServerConfig[], options?: MCPBridgeOptions);
    initialize(): Promise<void>;
    private initializeServer;
    private cacheToolMetadata;
    getRegisteredTools(): ToolRegistration[];
    getToolMetadata(qualifiedName: string): ToolRegistration | undefined;
    listServers(): string[];
    listToolsForServer(serverName: string): Tool[];
    callTool<T = any>(qualifiedName: string, args: any): Promise<T>;
    close(): Promise<void>;
    private withTimeout;
    private isToolDenied;
}
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