RegistryChain MCP v0.6.0

Model Context Protocol server for on-chain entity registration. Connect from Claude Desktop or Cursor to list, inspect, and register entities on RegistryChain.

How to add this MCP

Claude Desktop

  1. Open Claude Desktop → + (bottom-left) → Connectors.
  2. Choose + → Add custom connector.
  3. Paste this URL and confirm: https://mcp.registrychain.com/mcp
  4. Complete the browser Privy login when prompted, then enable the connector from + → Connectors in any chat.

Remote servers use Claude’s connector UI. claude_desktop_config.json is only for local command-based (stdio) servers.

Cursor

  1. Open Settings (Cmd/Ctrl + ,) → search MCP → Add new MCP server.
  2. Set Name to registrychain, Type to HTTP, URL to the value below.
  3. Or add .cursor/mcp.json in your project root:
{
  "mcpServers": {
    "registrychain": {
      "url": "https://mcp.registrychain.com/mcp"
    }
  }
}

On first tool use, Cursor opens the browser for Privy OAuth. After login, RegistryChain tools are available in agent mode.

list_entities
List and search registered entities with filtering and pagination
get_entity
Look up entity details by entity ID or nodehash
register_entity
Register a new entity on the Sepolia testnet
check_entity_id
Check if an entity ID is available
Health OAuth Metadata GitHub
MCP endpoint: /mcp · Privy authentication · Streamable HTTP transport