import { Tool } from '@modelcontextprotocol/sdk/types.js';
import { Gateway, TatumApiResponse } from '../types.js';
export declare const GATEWAY_TOOLS: Tool[];
export declare class GatewayService {
    private cachedGateways;
    private cachedChains;
    private methodsCache;
    private dataFetched;
    private readonly BLOCKCHAINS_URL;
    private readonly apiKey;
    constructor(apiKey?: string);
    /**
     * Initialize the service by fetching blockchain data from external API
     */
    initialize(): Promise<void>;
    /**
     * Get all available blockchain networks
     */
    getAvailableChains(): Promise<Gateway[]>;
    /**
     * Get supported chains as string array
     */
    getSupportedChains(): Promise<string[]>;
    /**
     * Get gateway URL for a specific chain
     */
    getGatewayUrl(chainName: string): Promise<string | undefined>;
    /**
     * Get available methods for a specific gateway
     */
    getAvailableMethods(gatewayUrl: string): Promise<any>;
    /**
     * Execute RPC or REST request to gateway
     */
    executeRequest({ gatewayUrl, method, body }: {
        gatewayUrl: string;
        method: string;
        body?: any;
    }): Promise<TatumApiResponse>;
    /**
     * Execute request with intelligent protocol detection based on chain
     */
    executeChainRequest({ chainName, method, params }: {
        chainName: string;
        method: string;
        params?: any[];
    }): Promise<TatumApiResponse>;
    /**
     * Execute JSON-RPC request
     */
    private executeJsonRpcRequest;
    /**
     * Execute REST request with chain-specific configuration
     */
    private executeRestRequestWithConfig;
    /**
     * Execute REST request (legacy method for backward compatibility)
     */
    private executeRestRequest;
    /**
     * Transform external blockchain data to internal Gateway format
     */
    private transformToGateways;
    /**
     * Extract all chain names from external blockchain data
     */
    private extractChainNames;
    /**
     * Ensure data is loaded before operations
     */
    private ensureDataLoaded;
}
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