import type { GateResponse, PaymentResult, XenarchConfig } from "./types.js";
export declare class NoFacilitatorSettledError extends Error {
    readonly tried: string[];
    constructor(tried: string[]);
}
/**
 * Make a paid HTTP request to a 402-gated URL.
 *
 * XEN-385: dropped `x402-fetch` because its replay sends the raw x402
 * `X-PAYMENT` header, which the Xenarch WP plugin's middleware doesn't
 * recognize — the plugin verifies payments via the canonical Xenarch
 * `X-Xenarch-Gate-Id` + `X-Xenarch-Tx-Hash` headers. Mirrors the
 * CLI's pattern (xenarch-sdks/cli/src/lib/payment.ts).
 *
 * Steps:
 *   1. Pick the x402 `accepts` entry to settle against (prefer exact
 *      scheme on the gate's network + USDC).
 *   2. Sign EIP-3009 `transferWithAuthorization` for USDC on Base via
 *      viem (`account.signTypedData`).
 *   3. Iterate through `gate.facilitators` in order, POSTing the signed
 *      payload to each `/settle` endpoint until one returns
 *      `success: true` with a tx hash.
 *   4. Re-fetch the gated URL with the canonical Xenarch headers; the
 *      publisher's middleware stateless-verifies the tx on-chain and
 *      serves the content.
 *
 * Throws `NoFacilitatorSettledError` if no facilitator settles. Throws
 * `Error("Paid fetch failed: ...")` if every facilitator settled but
 * the publisher's replay returns non-200.
 */
/**
 * Settle an x402 envelope and return the on-chain tx — WITHOUT the gate URL
 * re-fetch. This is the wrapped-pay-link counterpart to payAndFetch: a pay-link
 * finalizes via POST /v1/links/{id}/claim, not a publisher replay. Kept here so
 * it reuses the module-private EIP-3009 signing constants; the signing body
 * mirrors payAndFetch (XEN-414).
 */
export declare function settleX402(config: XenarchConfig, gate: GateResponse): Promise<{
    txHash: string;
    facilitator: string;
}>;
export declare function payAndFetch(url: string, config: XenarchConfig, gate: GateResponse): Promise<{
    response: Response;
    result: PaymentResult;
}>;
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