import { type Address } from 'viem';
declare const ROUTERS: {
    readonly USDC: Address;
    readonly USDT0: Address;
};
export type X402Asset = keyof typeof ROUTERS;
/**
 * Build, sign (EIP-3009 ReceiveWithAuthorization), and settle an x402 `exact`
 * stablecoin payment on Ink through the configured facilitator. The signed
 * `to` is the asset's X402FeeRouter (NOT the seller) — the router pulls the
 * funds, takes the protocol fee, and forwards the net to the seller. The
 * facilitator sponsors the settlement gas, so the payer needs no ETH and no
 * prior ERC-20 approval. Returns the parsed facilitator `/settle` response.
 */
export declare function payExact(params: {
    asset: X402Asset;
    amount: bigint;
    seller: Address;
    feeBps?: number;
    timeoutSeconds?: number;
    resource?: string;
}): Promise<Record<string, unknown>>;
export declare const x402Tools: ({
    name: string;
    description: string;
    inputSchema: {
        type: "object";
        properties: {
            amount?: undefined;
            feeBps?: undefined;
            paymentPayload?: undefined;
            paymentRequirements?: undefined;
            asset?: undefined;
            seller?: undefined;
        };
        required?: undefined;
    };
} | {
    name: string;
    description: string;
    inputSchema: {
        type: "object";
        properties: {
            amount: {
                type: string;
                description: string;
            };
            feeBps: {
                type: string;
                description: string;
            };
            paymentPayload?: undefined;
            paymentRequirements?: undefined;
            asset?: undefined;
            seller?: undefined;
        };
        required: string[];
    };
} | {
    name: string;
    description: string;
    inputSchema: {
        type: "object";
        properties: {
            paymentPayload: {
                type: string;
                description: string;
            };
            paymentRequirements: {
                type: string;
                description: string;
            };
            amount?: undefined;
            feeBps?: undefined;
            asset?: undefined;
            seller?: undefined;
        };
        required: string[];
    };
} | {
    name: string;
    description: string;
    inputSchema: {
        type: "object";
        properties: {
            asset: {
                type: string;
                description: string;
            };
            amount?: undefined;
            feeBps?: undefined;
            paymentPayload?: undefined;
            paymentRequirements?: undefined;
            seller?: undefined;
        };
        required?: undefined;
    };
} | {
    name: string;
    description: string;
    inputSchema: {
        type: "object";
        properties: {
            seller: {
                type: string;
                description: string;
            };
            amount: {
                type: string;
                description: string;
            };
            asset: {
                type: string;
                description: string;
            };
            feeBps: {
                type: string;
                description: string;
            };
            paymentPayload?: undefined;
            paymentRequirements?: undefined;
        };
        required: string[];
    };
})[];
export declare function handleX402Tool(name: string, args: Record<string, unknown>): Promise<unknown>;
export {};
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