/**
 * SDK adapter: turn X402 wallet configuration into a `PaymentHandler`
 * compatible with `@acedatacloud/sdk`.
 *
 * Usage:
 *
 *   import { AceDataCloud } from '@acedatacloud/sdk';
 *   import { createX402PaymentHandler } from '@acedatacloud/x402-client';
 *
 *   const client = new AceDataCloud({
 *     paymentHandler: createX402PaymentHandler({
 *       network: 'base',
 *       evmProvider: window.ethereum,
 *       evmAddress: '0x...',
 *     }),
 *   });
 *
 *   // Normal SDK calls work — no Bearer token needed.
 *   await client.openai.chat.completions.create({ ... });
 */
import type { EVMProvider, PaymentRequirement, SolanaWalletAdapter } from './types.js';
/** Options for `createX402PaymentHandler`. */
export interface X402PaymentHandlerOptions {
    /** Preferred payment network. */
    network: 'solana' | 'base' | 'skale';
    /** Solana wallet adapter (required if network=solana). */
    solanaWallet?: SolanaWalletAdapter;
    /** EVM EIP-1193 provider (required if network=base/skale). */
    evmProvider?: EVMProvider;
    /** EVM account address (required if network=base/skale). */
    evmAddress?: string;
    /**
     * When the server offers multiple schemes for the chosen network, prefer
     * this one. Use `"upto"` for metered chat APIs (Permit2-based, settles for
     * the actual usage) and `"exact"` for fixed-price endpoints. Falls back to
     * the first available accept entry when the preferred scheme is absent.
     */
    preferScheme?: 'exact' | 'upto';
}
/** Minimal shape of the SDK's PaymentHandler context. Duplicated here
 *  so this package does not need a dependency on `@acedatacloud/sdk`. */
interface SdkPaymentHandlerContext {
    url: string;
    method: string;
    body?: unknown;
    accepts: PaymentRequirement[];
}
interface SdkPaymentHandlerResult {
    headers: Record<string, string>;
}
/**
 * Build a `PaymentHandler` function that `@acedatacloud/sdk` can invoke
 * when the API returns `402 Payment Required`.
 */
export declare function createX402PaymentHandler(options: X402PaymentHandlerOptions): (ctx: SdkPaymentHandlerContext) => Promise<SdkPaymentHandlerResult>;
export {};