export declare class SolanaClient {
    private rpcEndpoint;
    private connection;
    constructor(rpcEndpoint: string);
    getBalance(publicKey: string): Promise<number>;
    getTokenBalance(publicKey: string, mintAddress: string): Promise<number>;
    executeMint(privateKey: string, mintAddress: string, urc: string, lutAddress: string): Promise<{
        success: boolean;
        txHash?: string;
        error?: string;
        terminalOutput?: string;
    }>;
    getFeeRate(mintAddress: string): Promise<number>;
    isHealthy(): Promise<boolean>;
}
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