export declare const CODEX_FAST_ROUTE_ORIGINATOR = "codex_cli_rs";
export declare const CODEX_FAST_ROUTE_HEADER = "x-codex-routing-hint";
export declare function isFirstPartyCodexHost(input: string | URL | Request): boolean;
export declare function isFirstPartyCodexBaseUrl(input: string | URL | Request): boolean;
export declare function isFirstPartyCodexEndpoint(input: string | URL | Request): boolean;
export declare function markCodexFastRouteRequest(headers: Record<string, string | null>, priority: boolean): void;
export declare function clearCodexFastRouteRequestMarker(headers: Record<string, string | null>): void;
export declare function forceCodexFastRouteOriginator(_endpoint: string | URL | Request, headersInit: HeadersInit | undefined): Headers;
export declare function wrapCodexFastRouteFetch(fetchImplementation: typeof globalThis.fetch): typeof globalThis.fetch;
export declare function wrapCodexFastRouteWebSocket(WebSocketImplementation: typeof globalThis.WebSocket): typeof globalThis.WebSocket;
export declare function installCodexFastRouteWebSocketIdentity(): void;
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