/** User setting for an OpenAI request-shape option: `auto` (fast) or forced on/off. */
export type CodexShapeSetting = "auto" | "on" | "off";
/**
 * The `responsesLite` stream option for this route, or undefined where the
 * model never uses lite (the provider ignores it there).
 */
export declare function resolveResponsesLite(setting: CodexShapeSetting, provider: string, model: string): boolean | undefined;
/**
 * The `strictTools` stream option for this route, or undefined off OpenAI
 * (other providers never send strict schemas).
 */
export declare function resolveStrictTools(setting: CodexShapeSetting, provider: string): boolean | undefined;