React

import { createClient } from "@solana/kit";
import { solanaRpc } from "@solana/kit-plugin-rpc";
import { walletSigner } from "@solana/kit-plugin-wallet";

export const client = createClient()
  .use(walletSigner({ chain: "solana:devnet" }))
  .use(solanaRpc({ rpcUrl: "https://api.devnet.solana.com" }));

export type AppClient = Awaited<typeof client>;

"use client";

import { ClientProvider } from "@solana/react";
import { client } from "./client";

export function Providers({ children }: { children: React.ReactNode }) {
  return <ClientProvider client={client}>{children}</ClientProvider>;
}

"use client";

import {
  useConnect,
  useConnectedWallet,
  useDisconnect,
  useWallets,
  useWalletStatus
} from "@solana/kit-plugin-wallet/react";
import { useClient } from "@solana/react";
import type { AppClient } from "./client";

function WalletPanel() {
  const client = useClient<AppClient>();
  const status = useWalletStatus(client);
  const wallets = useWallets(client);
  const connected = useConnectedWallet(client);
  const connect = useConnect(client);
  const disconnect = useDisconnect(client);

  if (status === "pending") return null; // wait out auto-reconnect

  if (connected) {
    return (
      <div>
        <p>{connected.account.address}</p>
        <button onClick={() => disconnect.dispatch()}>Disconnect</button>
      </div>
    );
  }

  return (
    <div>
      {wallets.map((wallet) => (
        <button
          key={wallet.name}
          disabled={connect.isRunning}
          onClick={() => connect.dispatch(wallet)}
        >
          Connect {wallet.name}
        </button>
      ))}
    </div>
  );
}

"use client";

import { address, lamports } from "@solana/kit";
import { getTransferSolInstruction } from "@solana-program/system";
import { useClient } from "@solana/react";
import { useConnectedWallet } from "@solana/kit-plugin-wallet/react";
import type { AppClient } from "./client";

function SendSol({ destination }: { destination: string }) {
  const client = useClient<AppClient>();
  const connected = useConnectedWallet(client);

  async function handleSend() {
    if (!connected?.signer) return;
    const transfer = getTransferSolInstruction({
      source: connected.signer,
      destination: address(destination),
      amount: lamports(10_000_000n) // 0.01 SOL
    });
    const result = await client.sendTransaction([transfer]);
    console.log("sent", result.context.signature);
  }

  return (
    <button disabled={!connected?.signer} onClick={handleSend}>
      Send 0.01 SOL
    </button>
  );
}

"use client";

import { address } from "@solana/kit";
import { useClient, useRequest } from "@solana/react";
import { useMemo } from "react";
import type { AppClient } from "./client";

function Balance({ owner }: { owner: string }) {
  const client = useClient<AppClient>();
  const source = useMemo(
    () => client.rpc.getBalance(address(owner)),
    [client, owner]
  );
  const { data, status, refresh } = useRequest(source);

  if (status === "fetching") return <p>Loading…</p>;
  if (status === "error") return <p role="alert">RPC error</p>;

  return (
    <div>
      <p>Lamports: {data?.value.toString()}</p>
      <button onClick={() => refresh()}>Refresh</button>
    </div>
  );
}