solana-agent-kit/src/langchain/sns/main_domain.ts

import { PublicKey } from "@solana/web3.js";
import { Tool } from "langchain/tools";
import { SolanaAgentKit } from "../../agent";

export class SolanaGetMainDomain extends Tool {
  name = "solana_get_main_domain";
  description = `Get the main/favorite domain for a given wallet address.

  Inputs:
  owner: string, eg "4Be9CvxqHW6BYiRAxW9Q3xu1ycTMWaL5z8NX4HR3ha7t" (required)`;

  constructor(private solanaKit: SolanaAgentKit) {
    super();
  }

  async _call(input: string): Promise<string> {
    try {
      const ownerPubkey = new PublicKey(input.trim());
      const mainDomain =
        await this.solanaKit.getMainAllDomainsDomain(ownerPubkey);

      return JSON.stringify({
        status: "success",
        message: "Main domain fetched successfully",
        domain: mainDomain,
      });
    } catch (error: any) {
      return JSON.stringify({
        status: "error",
        message: error.message,
        code: error.code || "FETCH_MAIN_DOMAIN_ERROR",
      });
    }
  }
}