@hashgraphonline/hedera-agent-kit/dist/esm/index27.js

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 { BaseHederaQueryTool } from "./index20.js";
const GetTopicMessagesByFilterZodSchema = z.object({
  topicId: z.string().describe('The topic ID to get messages for (e.g., "0.0.12345")'),
  sequenceNumber: z.string().optional().describe('Filter by sequence number (e.g., "gt:10", "lte:20")'),
  startTime: z.string().optional().describe('Filter by start consensus timestamp (e.g., "1629400000.000000000")'),
  endTime: z.string().optional().describe('Filter by end consensus timestamp (e.g., "1629500000.000000000")'),
  limit: z.number().int().positive().optional().describe("Maximum number of messages to return"),
  order: z.enum(["asc", "desc"]).optional().describe("Order of messages (ascending or descending)")
});
class HederaGetTopicMessages extends BaseHederaQueryTool {
  constructor(params) {
    super(params);
    this.name = "hedera-get-topic-messages-by-filter";
    this.description = "Retrieves filtered messages from a Hedera Consensus Service topic with optional filters for sequence number, time range, limit, and order.";
    this.specificInputSchema = GetTopicMessagesByFilterZodSchema;
    this.namespace = "hcs";
  }
  async executeQuery(args) {
    this.logger.info(`Getting filtered messages for topic ID: ${args.topicId}`);
    const options = {};
    if (args.sequenceNumber) options.sequenceNumber = args.sequenceNumber;
    if (args.startTime) options.startTime = args.startTime;
    if (args.endTime) options.endTime = args.endTime;
    if (args.limit) options.limit = args.limit;
    if (args.order) options.order = args.order;
    const messages = await this.hederaKit.query().getTopicMessagesByFilter(
      args.topicId,
      options
    );
    if (!messages) {
      return {
        success: false,
        error: `Could not retrieve messages for topic ${args.topicId}`
      };
    }
    return {
      success: true,
      topicId: args.topicId,
      messageCount: messages.length,
      filters: options,
      messages
    };
  }
}
export {
  HederaGetTopicMessages
};
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