/**
 * Constants for OpenAI code provider (ChatGPT OAuth) backend
 */
export declare const CODEX_BASE_URL = "https://chatgpt.com/backend-api";
export declare const OPENAI_HEADERS: {
    readonly BETA: "OpenAI-Beta";
    readonly ACCOUNT_ID: "chatgpt-account-id";
    readonly ORIGINATOR: "originator";
    readonly SESSION_ID: "session_id";
    readonly CONVERSATION_ID: "conversation_id";
};
export declare const OPENAI_HEADER_VALUES: {
    readonly BETA_RESPONSES: "responses=experimental";
    readonly BETA_RESPONSES_WEBSOCKETS_V2: "responses_websockets=2026-02-06";
    readonly ORIGINATOR_CODEX: "pi";
};
export declare const URL_PATHS: {
    readonly RESPONSES: "/responses";
    readonly CODEX_RESPONSES: "/codex/responses";
};
export declare const JWT_CLAIM_PATH: "https://api.openai.com/auth";
/**
 * Extract account ID from a OpenAI code backend JWT access token.
 * Returns undefined if the token is not a valid OpenAI code backend JWT.
 */
export declare function getCodexAccountId(accessToken: string): string | undefined;