/**
 * Detects if the visitor came from ChatGPT
 */
export declare function isFromChatGPT(): boolean;
/**
 * Detects if the visitor came from Google Gemini
 */
export declare function isFromGemini(): boolean;
/**
 * Detects if the visitor came from Perplexity AI
 */
export declare function isFromPerplexity(): boolean;
/**
 * Detects if the visitor came from Anthropic Claude
 */
export declare function isFromClaude(): boolean;
/**
 * Detects if the visitor came from any supported AI source.
 */
export declare function isFromAI(): boolean;
export type AISource = 'chatgpt' | 'gemini' | 'pplx' | 'claude';
/**
 * Returns the detected AI source, or null if the visitor didn't come from a known AI.
 */
export declare function getAISource(): AISource | null;
/**
 * Gets the browser key from script tag if present
 */
export declare function getBrowserKeyFromScript(): string | null;
/**
 * Gets the debug mode from script tag if present
 */
export declare function getDebugModeFromScript(): string | null;
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