export declare const PAYMENT_REQUIRED_HEADER = "PAYMENT-REQUIRED";
export interface IUseX402FetchParams {
    /** The URL to send the payment-gated request to. */
    url: string;
    /** Optional fetch init options (method, headers, body, etc.). */
    options?: RequestInit;
}
export interface IUseX402FetchReturnValues {
    /** Trigger the payment-gated fetch. Resolves with the raw `Response` — callers are responsible for reading and parsing the body. */
    fetchWithPayment: (params: IUseX402FetchParams) => Promise<Response>;
}