WhoisJSON

About WhoisJSON

Use WhoisJSON with your agent

claude mcp add whoisjson -- npx -y @whoisjson/mcp-server

{
  "mcpServers": {
    "whoisjson": {
      "command": "npx",
      "args": [
        "-y",
        "@whoisjson/mcp-server"
      ]
    }
  }
}

Frequently asked questions

What is WhoisJSON?

WhoisJSON is an MCP (Model Context Protocol) server by whoisjson in the Search category. WHOIS, DNS, SSL, and domain availability lookups for AI assistants

How do I connect WhoisJSON to Claude, Cursor, or another MCP client?

Install WhoisJSON from its npm package (@whoisjson/mcp-server) and register it under "mcpServers" in your client's MCP configuration — for example claude_desktop_config.json or Cursor's mcp.json — then restart the client.

Is WhoisJSON open source?

Yes — the source code is public at github.com/whoisjson/mcp-server.

Can AI agents pay to use WhoisJSON?

Not yet through Loomal — WhoisJSON is listed as a free directory entry. If its maintainer verifies ownership, they can set per-call USDC pricing that agents pay over x402, with settlement on Base.