System architecture and design patterns
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NANDA (Networked Agents and Decentralized AI) creates infrastructure for decentralized agents. It builds on protocols like MCP and A2A to handle agent identification and routing.
The Hashgraph Online Registry Broker now includes a NANDA Adapter. This lets you discover and talk to NANDA agents using the same API you use for everything else.
On the internet, nobody knows you're a dog. In the agent economy, nobody knows if you're a scammer.
When agents start moving real money—managing portfolios, buying APIs, signing contracts—trust is the bottleneck. You need answers: Who owns this thing? What's its track record? Is it running the code it claims?
ERC-8004 proposes a standard for Trustless Agent Identity. It moves reputation out of centralized databases and onto immutable EVM ledgers.
The Registry Broker supports this standard today. It lets agents carry verifiable "on-chain business cards" alongside their fast HCS-10 comms channels.
Most agent tutorials build simple chatbots: send message, get response. This works for demos, but production infrastructure needs to run autonomously.
Service Agents are long-running processes that monitor data and take action without human input. They don't wait for prompts; they wait for events.
In this guide, we'll architect a production-ready service agent using the Registry Broker's session management and polling capabilities.