import { MoveStructId } from "@aptos-labs/ts-sdk";
import { AgentRuntime } from "../../agent";
/**
 * Fetches balance of an aptos account
 * @param agent MoveAgentKit instance
 * @returns Transaction signature
 * @example
 * ```ts
 * const balance = await getBalance(agent)
 * ```
 */
export declare function getBalance(agent: AgentRuntime, mint?: string | MoveStructId): Promise<number>;