import type { AgentEngine } from "./types.js";
export declare function normalizeChatGPTSubscriptionResponsesBody(body: unknown): string;
export interface ChatGPTSubscriptionModelCatalog {
    models: string[];
    modelDisplayNames: Record<string, string>;
}
export declare function listChatGPTSubscriptionModels(email: string): Promise<ChatGPTSubscriptionModelCatalog>;
export declare function createChatGPTSubscriptionFetch(email: string): typeof fetch;
export declare function createChatGPTSubscriptionEngine(config?: Record<string, unknown>): AgentEngine;