Add Hashgraph Online (HOL) docset (#5564)

Universal Agentic Registry documentation for AI Agents and MCP Servers.

Includes:
- Registry Broker documentation
- Standards SDK reference
- 21+ HCS protocol specifications
- API reference and tutorials
- Generation script included

Documentation source: https://hol.org/docs/registry-broker/

Author: kantorcodes

docsets/Hashgraph_Online/Hashgraph_Online.tgz

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+# Hashgraph Online (HOL) Docset
+
+## Author
+- **GitHub**: [hashgraph-online](https://github.com/hashgraph-online)
+- **Twitter/X**: [@HashgraphOnline](https://x.com/HashgraphOnline)
+
+## What is Hashgraph Online?
+
+Hashgraph Online (HOL) is the **Universal Agentic Registry** - a decentralized directory for AI Agents and MCP Servers. It provides blockchain-based identity, discovery, and encrypted communication for autonomous AI agents across Web2 and Web3.
+
+**Key Features:**
+- Agent discovery across 46,000+ indexed agents
+- Multi-protocol support (A2A, MCP, XMTP, ERC-8004)
+- Blockchain-based identity (HCS-14 Universal Agent ID)
+- Encrypted agent-to-agent communication
+- MCP server integration for Claude Desktop, Cursor IDE
+
+## Documentation Source
+
+- **Main Docs**: https://hol.org/docs/registry-broker/
+- **SDK Docs**: https://hol.org/docs/libraries/standards-sdk/
+- **Standards**: https://hol.org/docs/standards/hcs-1
+- **Live Registry**: https://hol.org/registry
+
+## How to Generate the Docset
+
+### Prerequisites
+
+- Node.js 20+
+- pnpm (or npm)
+- sqlite3 (usually pre-installed on macOS/Linux)
+- ImageMagick (for icon generation)
+
+### Generation Steps
+
+The generation script (`generate-docset.ts`) is included in this folder.
+
+```bash
+# Create a working directory and copy the script
+mkdir hol-docset && cd hol-docset
+cp /path/to/generate-docset.ts .
+
+# Create package.json
+cat > package.json << 'EOF'
+{
+  "name": "hol-docset-generator",
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "generate": "pnpm exec tsx generate-docset.ts"
+  },
+  "devDependencies": {
+    "@types/node": "^20.0.0",
+    "tsx": "^4.0.0",
+    "typescript": "^5.0.0"
+  }
+}
+EOF
+
+# Install dependencies
+pnpm install
+
+# Generate docset
+pnpm run generate
+
+# Create icons (requires ImageMagick)
+# Download icon from https://hol.org or use the one from hcs-improvement-proposals repo
+magick /path/to/Logo_Icon.png -resize 16x16 Hashgraph_Online.docset/icon.png
+magick /path/to/Logo_Icon.png -resize 32x32 Hashgraph_Online.docset/icon@2x.png
+
+# Create archive
+tar --exclude='.DS_Store' -cvzf Hashgraph_Online.tgz Hashgraph_Online.docset
+```
+
+### What the Script Does
+
+1. Fetches documentation pages from hol.org (Docusaurus-based)
+2. Extracts main content and creates clean, readable HTML
+3. Creates a SQLite index (`docSet.dsidx`) for Dash search
+4. Generates an `Info.plist` with proper docset metadata
+
+## Indexed Content
+
+The docset includes:
+- **Registry Broker Documentation** - Agent discovery, chat, registration
+- **Standards SDK** - Core SDK for HCS standards
+- **HCS Standards** - 21+ protocol specifications (HCS-1 through HCS-21)
+- **API Reference** - Complete API client documentation
+- **Tutorials & Guides** - Getting started, MCP server setup, encrypted chat
+
+## Known Issues
+
+None currently. Please report issues at https://github.com/hashgraph-online/standards-sdk/issues
+
+## Links
+
+- **Website**: https://hol.org
+- **GitHub**: https://github.com/hashgraph-online
+- **npm**: `@hashgraphonline/standards-sdk`
+- **Telegram**: https://t.me/hashinals

docsets/Hashgraph_Online/README.md

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+{
+    "name": "Hashgraph Online",
+    "version": "1.0.0",
+    "archive": "Hashgraph_Online.tgz",
+    "author": {
+        "name": "Hashgraph Online DAO",
+        "link": "https://github.com/hashgraph-online"
+    },
+    "aliases": [
+        "HOL",
+        "HCS",
+        "Hedera",
+        "AI Agents",
+        "MCP",
+        "Universal Agent ID",
+        "UAID",
+        "Registry Broker",
+        "Standards SDK"
+    ]
+}