import { MCPRequest, MCPResponse, ServerState, ServerInfo, ServerCapabilities, Tool, CallToolResult } from './types.js';
import { SearchEngine } from '../../core/search/SearchEngine.js';
export interface RequestHandler {
    method: string;
    handler: (params: unknown, state: ServerState) => Promise<unknown>;
}
export declare class ProtocolHandlers {
    private handlers;
    private validation;
    private serverInfo;
    private capabilities;
    private tools;
    private searchEngine;
    constructor(serverInfo: ServerInfo, capabilities: ServerCapabilities, searchEngine?: SearchEngine);
    private setupDefaultHandlers;
    addHandler(method: string, handler: RequestHandler['handler']): void;
    addTool(tool: Tool): void;
    setSearchEngine(searchEngine: SearchEngine): void;
    handleRequest(request: MCPRequest, state: ServerState): Promise<MCPResponse>;
    private handleInitialize;
    private handlePing;
    private handleToolsList;
    private handleToolsCall;
    setToolHandler(toolName: string, handler: (args: Record<string, unknown>) => Promise<CallToolResult>): void;
}
export declare function createStandardTools(): Tool[];
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