/**
 * @file ERC20 Tool Handlers
 * @version 1.0.0
 *
 * Tool handlers for ERC20 token standard operations
 */
export declare function initializeErc20Handlers(service: any): void;
export declare const erc20Handlers: {
    getERC20TokenInfo: (args: unknown) => Promise<{
        content: {
            type: string;
            text: string;
        }[];
        isError?: undefined;
    } | {
        isError: boolean;
        content: {
            type: string;
            text: string;
        }[];
    }>;
    getERC20Balance: (args: unknown) => Promise<{
        content: {
            type: string;
            text: string;
        }[];
        isError?: undefined;
    } | {
        isError: boolean;
        content: {
            type: string;
            text: string;
        }[];
    }>;
    getERC20Allowance: (args: unknown) => Promise<{
        content: {
            type: string;
            text: string;
        }[];
        isError?: undefined;
    } | {
        isError: boolean;
        content: {
            type: string;
            text: string;
        }[];
    }>;
    transferERC20: (args: unknown) => Promise<{
        content: {
            type: string;
            text: string;
        }[];
        isError?: undefined;
    } | {
        isError: boolean;
        content: {
            type: string;
            text: string;
        }[];
    }>;
    approveERC20: (args: unknown) => Promise<{
        content: {
            type: string;
            text: string;
        }[];
        isError?: undefined;
    } | {
        isError: boolean;
        content: {
            type: string;
            text: string;
        }[];
    }>;
    transferFromERC20: (args: unknown) => Promise<{
        content: {
            type: string;
            text: string;
        }[];
        isError?: undefined;
    } | {
        isError: boolean;
        content: {
            type: string;
            text: string;
        }[];
    }>;
};