Server — HCS‑3

TypeScript

import { HCS } from '@hashgraphonline/standards-sdk';

const client = new HCS();
client.config.network = 'testnet';

const blob = await client.retrieveHCS1Data('0.0.12345');
const html = await blob.text();

Go

import "github.com/hashgraph-online/standards-sdk-go/pkg/mirror"

mirrorClient := mirror.NewClient("testnet", "", "")

// Retrieve topic messages (HCS-1/HCS-3 content)
messages, err := mirrorClient.GetTopicMessages("0.0.12345", nil)
if err != nil {
	log.Fatal(err)
}