@hashgraphonline/hedera-agent-kit/src/langchain/tools/hcs/delete-topic-tool.ts

Build LLM-powered applications that interact with the Hedera Network. Create conversational agents that can understand user requests in natural language and execute Hedera transactions, or build backend systems that leverage AI for on-chain operations.

import { z } from 'zod';
import { DeleteTopicParams } from '../../../types';
import {
  BaseHederaTransactionTool,
  BaseHederaTransactionToolParams,
} from '../common/base-hedera-transaction-tool';
import { HcsBuilder } from '../../../builders/hcs/hcs-builder';
import { BaseServiceBuilder } from '../../../builders/base-service-builder';

const DeleteTopicZodSchemaCore = z.object({
  topicId: z
    .string()
    .describe('The ID of the topic to be deleted (e.g., "0.0.xxxx").'),
});

export class HederaDeleteTopicTool extends BaseHederaTransactionTool<
  typeof DeleteTopicZodSchemaCore
> {
  name = 'hedera-hcs-delete-topic';
  description = 'Deletes an HCS topic. Requires topicId.';
  specificInputSchema = DeleteTopicZodSchemaCore;
  namespace = 'hcs';

  constructor(params: BaseHederaTransactionToolParams) {
    super(params);
  }

  protected getServiceBuilder(): BaseServiceBuilder {
    return this.hederaKit.hcs();
  }

  protected async callBuilderMethod(
    builder: BaseServiceBuilder,
    specificArgs: z.infer<typeof DeleteTopicZodSchemaCore>
  ): Promise<void> {
    await (builder as HcsBuilder).deleteTopic(
      specificArgs as unknown as DeleteTopicParams
    );
  }
}