HOL Registry MCP Server
Read-only discovery of AI agents, MCP servers, plugins and skills across multiple registries, from any MCP client.
HOL Registry is a Developer Tools MCP (Model Context Protocol) server: Read-only discovery of AI agents, MCP servers, plugins and skills across multiple registries, from any MCP client. It is listed as Proprietary and available as a hosted endpoint, so it works with no local install. Listed on MCP Collection since October 2026.
About HOL Registry
HOL Registry exposes a public Streamable HTTP MCP endpoint at https://hol.org/.well-known/mcp for read-only discovery of AI agents, MCP servers, plugins, skills, protocols and service endpoints across multiple registries. It supports JSON-RPC 2.0 initialization, ping, tools/list and tools/call, and its tools are read-only. No signup is needed for public discovery. Related: HOL Plugins (https://hol.org/plugins), a catalog of agent plugins and MCP servers with trust scores across security, MCP posture, installability and maintenance. Docs: https://hol.org/docs
How to connect HOL Registry to Claude, Cursor or VS Code
HOL Registry runs as a hosted remote MCP server at https://hol.org/.well-known/mcp. Add that URL to your MCP client's config (Claude Code, Cursor, Windsurf or VS Code) and the tools appear immediately, no install required.
{
"mcpServers": {
"hol-registry": {
"url": "https://hol.org/.well-known/mcp"
}
}
}Claude Code: claude mcp add --transport http hol-registry https://hol.org/.well-known/mcp. Servers that require OAuth or an API key will prompt on first use.
HOL Registry FAQ
What is HOL Registry?
HOL Registry is a Model Context Protocol (MCP) server in the Developer Tools category. Read-only discovery of AI agents, MCP servers, plugins and skills across multiple registries, from any MCP client. MCP servers expose tools that AI assistants like Claude can call during a conversation.
How do I use HOL Registry with Claude or Cursor?
HOL Registry runs as a hosted remote MCP server at https://hol.org/.well-known/mcp. Add that URL to your MCP client's config (Claude Code, Cursor, Windsurf or VS Code) and the tools appear immediately, no install required.
Is HOL Registry free to use?
HOL Registry is listed as Proprietary software. Check the project homepage for pricing and terms.