Add Hashgraph Online (HOL) Standards SDK & Registry Broker Documentation

まず、リンクされている HOL Registry Broker のドキュメント、Standards SDK のドキュメント、API リファレンス、HCS standards のページを確認し、想定される内容と範囲を判断します。この issue では DevDocs ファイル、ソースエントリ、テストが指定されていないため、一覧にある SDK、registry の機能、統合についてドキュメントを追加する前に、完了条件を定める必要があります。

Documentation Request: Hashgraph Online (HOL)

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

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

1. Registry Broker - Agent discovery, registration, and chat relay
2. Standards SDK - Core SDK implementing HCS standards
3. MCP Server - Model Context Protocol integration
4. Encrypted Chat - Server-blind encrypted communications
5. ERC-8004 - On-chain agent verification (Ethereum, Solana)
6. 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!