Sui: Read the chain over gRPC

Purpose

The canonical way to read Sui in 2026. One client covers balances, objects, transactions, metadata, and name service.

JSON-RPC is being retired (mainnet: July 31, 2026). SuiClient / suix_* / sui_* HTTP methods stop working on public fullnodes. Everything below is the replacement surface, verified against mainnet.

Setup

import { SuiGrpcClient } from '@mysten/sui/grpc';

const client = new SuiGrpcClient({
  baseUrl: 'https://fullnode.mainnet.sui.io',
  network: 'mainnet',
});