who.is MCP

This official MCP server provides access to parsed WHOIS records, normalized RDAP data, DNS records, TLS certificate details, and domain history for any domain. It enables agents to perform lookups, track changes, and monitor domain events using the same authentication as the REST API.

Visit who.is

Endpoint and access

API key: create a key with the vendor first; your client sends it as an authorization header on every request.

Vendor evidenceStreamable HTTPAPI keyEndpoint checked 2026-11-01Operated by who.is

You need:Create a key on the API keys page.Send the key with every request as a Bearer token in the Authorization headerYour plan grants a fresh allowance of credits each calendar month (UTC).

MCP endpoint (Streamable HTTP)

https://api.who.is/v1/mcp

Vendor documentation

What you can do with it

Retrieve parsed WHOIS records for a domain
Get normalized RDAP data and nameserver info
Check current DNS records and change timelines
View TLS certificate details and history

Source and maintenance

Vendor evidenceRegistry 1.0.0

mcp-registry: is.who/whois@1.0.0 Project website

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 421 ms
95th percentile latency: 421 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 1, 2026, 12:59 PM UTC · probe · passed · 421 ms · metadata changed · refuses unauthenticated initialize (HTTP 401)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http who-is-mcp https://api.who.is/v1/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add who-is-mcp --url https://api.who.is/v1/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable who-is-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "who-is-mcp": {
      "url": "https://api.who.is/v1/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "who-is-mcp": {
      "type": "streamableHttp",
      "url": "https://api.who.is/v1/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start who-is-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "who-is-mcp": {
      "type": "http",
      "url": "https://api.who.is/v1/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http who-is-mcp https://api.who.is/v1/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "who-is-mcp": {
      "url": "https://api.who.is/v1/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "who-is-mcp": {
      "serverUrl": "https://api.who.is/v1/mcp"
    }
  }
}

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Do you run who.is MCP?

Prove ownership with a DNS record, a well-known file, or your Official MCP Registry entry, and your edits publish immediately. Proofs are re-checked weekly; admins can still hide or remove a listing.

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