/**
 * x402.ts — x402_pay tool.
 *
 * Fetches a URL, automatically handling 402 Payment Required responses
 * by paying with the Agent Wallet and retrying the request.
 *
 * v1.1.0: Auto-session detection. If an active x402 V2 session covers the
 * requested URL, session headers are injected and no new payment is made.
 * Pass skip_session_check=true to force a fresh payment regardless.
 */
import { z } from 'zod';
export declare const X402PaySchema: z.ZodObject<{
    url: z.ZodString;
    method: z.ZodDefault<z.ZodOptional<z.ZodEnum<["GET", "POST", "PUT", "PATCH", "DELETE"]>>>;
    headers: z.ZodOptional<z.ZodRecord<z.ZodString, z.ZodString>>;
    body: z.ZodOptional<z.ZodString>;
    max_payment_eth: z.ZodOptional<z.ZodString>;
    timeout_ms: z.ZodDefault<z.ZodOptional<z.ZodNumber>>;
    skip_session_check: z.ZodDefault<z.ZodOptional<z.ZodBoolean>>;
}, "strip", z.ZodTypeAny, {
    method: "GET" | "POST" | "PUT" | "PATCH" | "DELETE";
    timeout_ms: number;
    url: string;
    skip_session_check: boolean;
    body?: string | undefined;
    headers?: Record<string, string> | undefined;
    max_payment_eth?: string | undefined;
}, {
    url: string;
    body?: string | undefined;
    headers?: Record<string, string> | undefined;
    method?: "GET" | "POST" | "PUT" | "PATCH" | "DELETE" | undefined;
    max_payment_eth?: string | undefined;
    timeout_ms?: number | undefined;
    skip_session_check?: boolean | undefined;
}>;
export type X402PayInput = z.infer<typeof X402PaySchema>;
export declare const x402PayTool: {
    name: string;
    description: string;
    inputSchema: {
        type: "object";
        properties: {
            url: {
                type: string;
                description: string;
            };
            method: {
                type: string;
                enum: string[];
                description: string;
                default: string;
            };
            headers: {
                type: string;
                additionalProperties: {
                    type: string;
                };
                description: string;
            };
            body: {
                type: string;
                description: string;
            };
            max_payment_eth: {
                type: string;
                description: string;
            };
            timeout_ms: {
                type: string;
                description: string;
                default: number;
            };
            skip_session_check: {
                type: string;
                description: string;
                default: boolean;
            };
        };
        required: string[];
    };
};
export declare function handleX402Pay(input: X402PayInput): Promise<{
    content: Array<{
        type: 'text';
        text: string;
    }>;
    isError?: boolean;
}>;
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