/**
 * SuperGrok (`xai-oauth`) subscription usage provider.
 *
 * Reads utilization from the Grok CLI billing endpoint. Prefer the legacy
 * weekly `format=credits` payload (creditUsagePercent / productUsage). When
 * xAI marks the account as unified billing and omits those fields, fall back
 * to the default monthly included-quota shape (`monthlyLimit` / `used`).
 * Only OAuth access credentials are accepted; paid API keys are a separate
 * product and must never be sent here.
 */
import type { UsageProvider } from "../usage.js";
export declare const xaiOauthUsageProvider: UsageProvider;