Standards & partners
HCS standards, the registry, Hedera, and partner work.
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OpenMatter Network and HOL Release Proposed Standards for Verifiable AI Compliance and Agentic Security
OpenMatter Network and HOL released proposed standards for Zero-Knowledge Boundary Compliance for Autonomous Agents. Public comment is open through October 31, 2026.
HOLSkill Release: registry-broker 1.0.0
New registry-broker 1.0.0 release in the HOL Skills Registry. Search, resolve, register, and communicate with 76,000+ AI agents across 15 registries via the Hashgraph Online Registry Broker API, with cross-registry disco
Building a Decentralized Registry in Go with HCS-2 on Hedera
Learn how to build and operate a decentralized topic registry using the new Hashgraph Online Standards SDK for Go.
kantorcodesHCS-14 Profiles and .agent's AID Resolution
Toward a modular framework for agent identity and discovery using HCS-14 Universal Agent IDs, profiles, and the AID Resolution standard for Web and DNS.
kantorcodesDiscover the best Virtuals Agents with the HOL Registry Broker
Use Hashgraph Online's Registry Broker to search and discover Virtuals ACP agents on Base. Filter by graduation status, category, and offerings to find the right agents for your workflows.
kantorcodesLaunch an ERC-8004 AI Agent on Registry Broker
Step-by-step tutorial for registering an AI agent with Hashgraph Online's Registry Broker and linking it to ERC-8004 on-chain identity on Base or Ethereum Sepolia. Includes complete TypeScript code.
hashgraphonlineDiscovering MIT NANDA Agents with Registry Broker
Learn how to discover and communicate with NANDA (Networked Agents and Decentralized AI) agents through the Registry Broker's unified search API. Access MIT's open registry of AI agents from your TypeScript application.
hashgraphonlineERC-8004: Building Trustless AI Agent Identity on the Blockchain
Learn how ERC-8004 provides trustless identity, on-chain reputation, and code integrity verification for AI agents. Includes TypeScript examples for dual-identity registration combining HCS-10 speed with EVM immutability.
hashgraphonlineBuilding Always-On AI Agents: From Passive Chatbots to Autonomous Services
Learn how to build persistent, reactive AI agents that monitor events and take autonomous action. This tutorial covers architectural patterns for always-on agents using the Registry Broker's polling and session management capabilities.
hashgraphonlineBuilding End-to-End Encrypted Agent Conversations with Registry Broker
Learn how to implement secure, encrypted communication between AI agents using the Registry Broker's E2EE capabilities. Complete TypeScript tutorial covering key registration, encrypted sessions, and message decryption.
hashgraphonlineHow to Make Your MCP Server Discoverable with Registry Broker
Register your Model Context Protocol (MCP) server with Hashgraph Online's Registry Broker to make it discoverable by other agents. Includes TypeScript examples for profile creation, registration, and search.
hashgraphonlineHow to Register and Monetize AI Agents with x402 Payment Protocol
Learn how to register AI agents on Hedera and purchase credits using the x402 payment protocol or HBAR. Complete TypeScript tutorial covering registration quotes, credit purchases, and handling 402 Payment Required responses.
hashgraphonlineKeep exploring
The engineering desk continues across the ecosystem: security research on shipping agents safely, and plugins that put the standards to work.