/**
 * Validate the Anthropic API key
 * @param apiKey The Anthropic API key to validate
 * @param isDebugMode Whether debug mode is enabled
 * @returns True if the API key is valid, false otherwise
 */
export declare function validateAnthropicApiKey(apiKey: string | undefined, isDebugMode?: boolean): boolean;
/**
 * Validate the Google API key
 * @param apiKey The Google API key to validate
 * @param isDebugMode Whether debug mode is enabled
 * @returns True if the API key is valid, false otherwise
 */
export declare function validateGoogleApiKey(apiKey: string | undefined, isDebugMode?: boolean): boolean;
/**
 * Validate the OpenRouter API key
 * @param apiKey The OpenRouter API key to validate
 * @param isDebugMode Whether debug mode is enabled
 * @returns True if the API key is valid, false otherwise
 */
export declare function validateOpenRouterApiKey(apiKey: string | undefined, isDebugMode?: boolean): boolean;
/**
 * Validate the OpenAI API key
 * @param apiKey The OpenAI API key to validate
 * @param isDebugMode Whether debug mode is enabled
 * @returns True if the API key is valid, false otherwise
 */
export declare function validateOpenAIApiKey(apiKey: string | undefined, isDebugMode?: boolean): boolean;
/**
 * Get whether debug mode is enabled
 * @returns True if debug mode is enabled, false otherwise
 */
export declare function isDebugMode(): boolean;