RPC guide for Quantara Devnet-0

2.1 — Minimal TypeScript client

Install @polkadot/api and use the WebSocket endpoint:

import { ApiPromise, WsProvider } from "@polkadot/api";

async function main() {
  const provider = new WsProvider("wss://rpc.devnet-0.quantara.xyz");
  const api = await ApiPromise.create({ provider });

  const [chain, nodeName, nodeVersion, header] = await Promise.all([
    api.rpc.system.chain(),
    api.rpc.system.name(),
    api.rpc.system.version(),
    api.rpc.chain.getHeader(),
  ]);

  console.log(`Connected to ${chain} via ${nodeName} v${nodeVersion}`);
  console.log("Best block:", header.number.toString());
}

main().catch((err) => {
  console.error(err);
  process.exit(1);
});

2.2 — Browser / wallet integrations

• • For browser apps, prefer a backend proxy instead of talking directly to public RPC from untrusted clients.
• • When integrating browser wallets, treat Quantara Devnet-0 as a custom network with QTR / 12 / SS58=73.
• • See the Integration guide for full client configuration examples.