feat: add staking

src/tools/index.ts

@@ -7,3 +7,4 @@ export * from './transfer';
 export * from './trade';
 export * from './register_domain';
 export * from './launch_pumpfun_token';
+export * from './stake_with_jup';

src/tools/stake_with_jup.ts

@@ -0,0 +1,39 @@
+import { VersionedTransaction } from "@solana/web3.js";
+import { SolanaAgentKit } from "../agent";
+
+/**
+ * Stake SOL with Jup validator
+ * @param agent SolanaAgentKit instance
+ * @param amount Amount of SOL to stake
+ * @returns Transaction signature
+ */
+export async function stakeWithJup(
+  agent: SolanaAgentKit,
+  amount: number,
+): Promise<string> {
+  try {
+    const res = await fetch(
+      `https://worker.jup.ag/blinks/swap/So11111111111111111111111111111111111111112/jupSoLaHXQiZZTSfEWMTRRgpnyFm8f6sZdosWBjx93v/${amount}`,
+      {
+        method: "POST",
+        body: JSON.stringify({
+          account: agent.wallet.publicKey.toBase58(),
+        }),
+      },
+    );
+
+    const data = await res.json();
+
+    const txn = VersionedTransaction.deserialize(
+      Buffer.from(data.transaction, "base64"),
+    );
+
+    // Sign and send transaction
+    txn.sign([agent.wallet]);
+    const signature = await agent.connection.sendTransaction(txn);
+    return signature;
+  } catch (error: any) {
+    console.error(error);
+    throw new Error(`jupSOL staking failed: ${error.message}`);
+  }
+}