import type { Model } from "../types.js";
/** Read the optional process-wide Codex WebSocket override. */
export declare function getOpenAICodexWebSocketEnvValue(): boolean | undefined;
/** Resolve the public WebSocket preference using env, caller, then model precedence. */
export declare function isOpenAICodexWebSocketPreferred(model: Model<"openai-codex-responses">, options?: {
    preferWebsockets?: boolean;
}): boolean;