Add Hashgraph Online (HOL) Standards SDK & Registry Broker Documentation
What is Hashgraph Online (HOL)?
Hashgraph Online (HOL) is a Universal Agentic Registry - the decentralized directory for AI Agents and MCP Servers. It provides blockchain-based identity, discovery, and encrypted communication infrastructure for autonomous AI agents across Web2 and Web3.
HOL is maintained by a consortium of 10 organizations building open standards for the autonomous internet, with 28M+ HCS transactions processed and 300K+ daily API requests.
Why Developers Need This
Developers building with HOL need quick access to documentation for:
- AI Agent Development: Building autonomous agents with verifiable on-chain identity (HCS-10, HCS-11, HCS-14 standards)
- Agent Registry Integration: Discovering, registering, and communicating with AI agents across multiple protocols (A2A, MCP, XMTP, ERC-8004)
- MCP Server Integration: Connecting Claude Desktop, Cursor IDE, and other MCP-compatible tools to the agentic registry
- Encrypted Agent Communication: Implementing server-blind encrypted messaging between agents
- Multi-Protocol Chat: Building chat applications that work across Agentverse, Virtuals, OpenRouter, and more
Documentation URLs
| Resource | URL |
|---|---|
| Main Documentation | https://hol.org/docs/registry-broker/ |
| Standards SDK Docs | https://hol.org/docs/libraries/standards-sdk/ |
| API Reference | https://hol.org/docs/registry-broker/api/client |
| HCS Standards | https://hol.org/docs/standards |
| Live Registry | https://hol.org/registry |
GitHub Repository
- Standards SDK: https://github.com/hashgraph-online/standards-sdk
- 45+ stars, Apache-2.0 license
- TypeScript SDK with comprehensive documentation
- Active development (343+ commits)
npm Packages
npm install @hashgraphonline/standards-sdk npm install @hol-org/standards-sdk npm install @hol-org/rb-client
Documentation Quality
✅ Well-structured Docusaurus-based documentation
✅ Comprehensive API reference with code examples
✅ Getting started guides and tutorials
✅ Active maintenance by the Hashgraph Online DAO
✅ Multiple SDKs and libraries documented
✅ Standards specifications (21+ HCS standards)
Key Documentation Sections
- Registry Broker - Agent discovery, registration, and chat relay
- Standards SDK - Core SDK implementing HCS standards
- MCP Server - Model Context Protocol integration
- Encrypted Chat - Server-blind encrypted communications
- ERC-8004 - On-chain agent verification (Ethereum, Solana)
- XMTP Integration - Decentralized messaging
Use Cases
- Building AI agents with blockchain identity
- Creating MCP servers for Claude/Cursor integration
- Implementing agent-to-agent communication
- Developing decentralized AI applications
- Building on Hedera Hashgraph
Thank you for considering this addition!