import type { CredentialRankingStrategy, UsageProvider, UsageReport } from "../usage.js";
/**
 * Parse Codex `x-codex-{primary,secondary}-*` rate-limit response headers into
 * a usage report. The backend attaches these snapshots to every response, so
 * ingesting them lets credential selection block an exhausted account before
 * the next request burns a wire 429.
 */
export declare function parseCodexRateLimitHeaders(headers: Record<string, string>, now?: number): UsageReport | null;
export declare const openaiCodexUsageProvider: UsageProvider;
export declare const codexRankingStrategy: CredentialRankingStrategy;