import { AxiosInstance } from "axios";
export declare let isHttpMode: boolean;
/**
 * Core Axios client for TomTom API requests
 * Uses dynamic API key resolution for both environment and session-based keys
 */
export declare const tomtomClient: AxiosInstance;
/**
 * Get session-specific API key from current async context
 */
export declare function getSessionApiKey(): string | undefined;
/**
 * Set session-specific configuration for the current async context
 */
export declare function setSessionContext(apiKey: string, backend?: "tomtom-maps" | "tomtom-orbis-maps"): void;
/**
 * Run function within a session context (for HTTP requests)
 */
export declare function runWithSessionContext<T>(apiKey: string, backend: "tomtom-maps" | "tomtom-orbis-maps", fn: () => T): T;
/**
 * Get current session backend
 */
export declare function getSessionBackend(): "tomtom-maps" | "tomtom-orbis-maps" | undefined;
/**
 * Get the effective API key (session or environment)
 */
export declare function getEffectiveApiKey(): string | undefined;
/**
 * Helper function to validate that API key exists before making calls
 * @throws {Error} If the API key is not set
 * @returns {void} Nothing if validation passes
 */
export declare function validateApiKey(): void;
/**
 * Set the mode to HTTP server mode
 * This changes the user-agent header to indicate HTTP mode
 * Uses MCP_TRANSPORT_MODE environment variable if available, otherwise defaults to "TomTomMCPSDKHttp"
 */
export declare function setHttpMode(): void;
/**
 * API version constants for TomTom Maps API
 * Each API has its own version number which can change independently
 */
export declare const API_VERSION: {
    readonly SEARCH: 2;
    readonly GEOCODING: 2;
    readonly ROUTING: 1;
    readonly TRAFFIC: 5;
    readonly MAP: 1;
};
/**
 * API version constants for TomTom Orbis Maps API
 * Each API has its own version number which can be different from TomTom Maps API
 */
export declare const ORBIS_API_VERSION: {
    readonly SEARCH: 1;
    readonly GEOCODING: 1;
    readonly ROUTING: 2;
    readonly TRAFFIC: 1;
    readonly MAP: 1;
};