diff --git a/ts/client/src/scripts/mb-add-spot-market.ts b/ts/client/src/scripts/mb-add-spot-market.ts
new file mode 100644
index 000000000..822c1f813
--- /dev/null
+++ b/ts/client/src/scripts/mb-add-spot-market.ts
@@ -0,0 +1,58 @@
+import { AnchorProvider, Wallet } from '@project-serum/anchor';
+import { Connection, Keypair, PublicKey } from '@solana/web3.js';
+import * as dotenv from 'dotenv';
+import fs from 'fs';
+import { MangoClient } from '../client';
+import { MANGO_V4_ID } from '../constants';
+dotenv.config();
+
+//
+// (untested?) script which closes a mango account cleanly, first closes all positions, withdraws all tokens and then closes it
+//
+async function addSpotMarket() {
+  const options = AnchorProvider.defaultOptions();
+  const connection = new Connection(process.env.MB_CLUSTER_URL!, options);
+
+  // admin
+  const admin = Keypair.fromSecretKey(
+    Buffer.from(
+      JSON.parse(fs.readFileSync(process.env.MB_PAYER_KEYPAIR!, 'utf-8')),
+    ),
+  );
+  const adminWallet = new Wallet(admin);
+  const adminProvider = new AnchorProvider(connection, adminWallet, options);
+  const client = await MangoClient.connect(
+    adminProvider,
+    'mainnet-beta',
+    MANGO_V4_ID['mainnet-beta'],
+  );
+  console.log(`Admin ${admin.publicKey.toBase58()}`);
+
+  // fetch group
+  const groupPk = '78b8f4cGCwmZ9ysPFMWLaLTkkaYnUjwMJYStWe5RTSSX';
+  const group = await client.getGroup(new PublicKey(groupPk));
+  console.log(`Found group ${group.publicKey.toBase58()}`);
+
+  const eth_openbook_mkt = 'FZxi3yWkE5mMjyaZj6utmYL54QQYfMCKMcLaQZq4UwnA';
+  const eth_mint = '7vfCXTUXx5WJV5JADk17DUJ4ksgau7utNKj4b963voxs';
+  const usdc_mint = 'EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v';
+
+  const signature = await client.serum3RegisterMarket(
+    group,
+    new PublicKey(eth_openbook_mkt),
+    group.getFirstBankByMint(new PublicKey(eth_mint)),
+    group.getFirstBankByMint(new PublicKey(usdc_mint)),
+    1, // market index
+    'ETH/USDC',
+  );
+
+  console.log('Tx Successful:', signature);
+
+  process.exit();
+}
+
+async function main() {
+  await addSpotMarket();
+}
+
+main();