Updated protocol name instead of library name

src/tools/sns/register_domain.ts

@@ -0,0 +1,58 @@
+import { registerDomainNameV2 } from "@bonfida/spl-name-service";
+import { Transaction } from "@solana/web3.js";
+import { SolanaAgentKit } from "../../agent";
+import { getAssociatedTokenAddressSync } from "@solana/spl-token";
+import { TOKENS } from "../../constants";
+
+/**
+ * Register a .sol domain name using Bonfida Name Service
+ * @param agent SolanaAgentKit instance
+ * @param name Domain name to register (without .sol)
+ * @param spaceKB Space allocation in KB (max 10KB)
+ * @returns Transaction signature
+ */
+export async function registerDomain(
+  agent: SolanaAgentKit,
+  name: string,
+  spaceKB: number = 1,
+): Promise<string> {
+  try {
+    // Validate space size
+    if (spaceKB > 10) {
+      throw new Error("Maximum domain size is 10KB");
+    }
+
+    // Convert KB to bytes
+    const space = spaceKB * 1_000;
+
+    const buyerTokenAccount = await getAssociatedTokenAddressSync(
+      agent.wallet_address,
+      TOKENS.USDC,
+    );
+
+    // Create registration instruction
+    const instruction = await registerDomainNameV2(
+      agent.connection,
+      name,
+      space,
+      agent.wallet_address,
+      buyerTokenAccount,
+    );
+
+    // Create and sign transaction
+    const transaction = new Transaction().add(...instruction);
+    transaction.recentBlockhash = (
+      await agent.connection.getLatestBlockhash()
+    ).blockhash;
+    transaction.feePayer = agent.wallet_address;
+
+    // Sign and send transaction
+    const signature = await agent.connection.sendTransaction(transaction, [
+      agent.wallet,
+    ]);
+
+    return signature;
+  } catch (error: any) {
+    throw new Error(`Domain registration failed: ${error.message}`);
+  }
+}