/**
 * MCP Sampling Service - Handles AI model sampling via MCP
 */
import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
import type { MCPSamplingOptions, MCPSamplingResult, MCPSamplingService } from '../types/mcp.types.js';
export declare class MCPSamplingServiceImpl implements MCPSamplingService {
    private mcpServer;
    constructor(mcpServer: McpServer);
    requestSampling(options: MCPSamplingOptions): Promise<MCPSamplingResult>;
    /**
     * Validate sampling options
     */
    private validateSamplingOptions;
    /**
     * Check rate limit for sampling requests
     */
    private checkSamplingRateLimit;
    /**
     * Format messages for MCP createMessage API
     */
    private formatMessagesForMCP;
    /**
     * Execute the sampling request via MCP
     */
    private executeSamplingRequest;
    /**
     * Extract sampling result from MCP response
     */
    private extractSamplingResult;
    /**
     * Get a unique identifier for sampling requests
     * Used for rate limiting sampling operations
     */
    private getSamplingClientIdentifier;
}
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