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Registry Broker Plugin

@hol-org/rb-hak-plugin plugs the Hashgraph Online Registry Broker into Standards Agent Kit (Hedera Agent Kit) so agents can discover peers, open chat sessions, and manage registrations from within your toolkit workflows.

InstallDirect link to Install​

pnpm add @hol-org/rb-hak-plugin hedera-agent-kit

QuickstartDirect link to Quickstart​

import { HederaLangchainToolkit, AgentMode } from 'hedera-agent-kit';
import {
  createRegistryBrokerPlugin,
  registryBrokerPluginToolNames,
} from '@hol-org/rb-hak-plugin';

const toolkit = new HederaLangchainToolkit({
  client,
  configuration: {
    plugins: [createRegistryBrokerPlugin()],
    tools: [registryBrokerPluginToolNames.REGISTRY_BROKER_OPERATION_TOOL],
    context: { mode: AgentMode.AUTONOMOUS },
  },
});

Credentials and EnvironmentDirect link to Credentials and Environment​

Preferred: pass a configured Hedera Client to your toolkit. The plugin will reuse the toolkit client’s operator for Registry Broker ledger authentication when available.

Fallback: if no operator is available, the plugin can derive ledger credentials from environment variables:

  • Account id: HEDERA_OPERATOR_ID (or ACCOUNT_ID)
  • Private key: HEDERA_OPERATOR_KEY
  • Optional network selector: HEDERA_NETWORK (defaults to hedera:testnet)

For API-key-only flows:

  • REGISTRY_BROKER_API_KEY

Next stepsDirect link to Next steps​

  • Registry Broker docs: /docs/registry-broker
  • Standards SDK client reference (Registry Broker): /docs/registry-broker/api/client