INDIVIDUAL MCP TOOL

validators__email

Email syntax, whether the domain accepts mail, disposable and role-account flags.

fourzerotwo.sinone authenticationAvailability not checked

LIVE ENDPOINT

https://fourzerotwo.si/mcp/v/web

No auth detected

Connect to this endpoint to inspect the live schema for validators__email and invoke it with your own arguments.

{}

Potential side effects detected · medium confidence · heuristic, not a guarantee.

CONNECT WITH APPROVAL

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.fourzerotwo-vertical-web]
url = "https://fourzerotwo.si/mcp/v/web"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "fourzerotwo-vertical-web": {
      "type": "http",
      "url": "https://fourzerotwo.si/mcp/v/web"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: fourzerotwo-vertical-web
Remote MCP URL: https://fourzerotwo.si/mcp/v/web

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "fourzerotwo-vertical-web": {
      "url": "https://fourzerotwo.si/mcp/v/web"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "fourzerotwo-vertical-web": {
      "type": "http",
      "url": "https://fourzerotwo.si/mcp/v/web"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "fourzerotwo-vertical-web",
  "transport": "streamable-http",
  "url": "https://fourzerotwo.si/mcp/v/web"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

domains__availability — Registered or available, straight from the TLD registry.
domains__facts — Registrar, created, expiry, age, status codes, nameservers and DNSSEC.
domains__dns — A, AAAA, MX, NS, TXT, CNAME and CAA records (or one type).
domains__ip-owner — Network, organisation, range, country and abuse email for an IP, from the regional internet registry.
domains__dmca-agent — Published DMCA / abuse contact (email or form) for a major platform, host, CDN or registrar.
domains__abuse-contacts — Everyone to send an abuse or takedown report to for a site: platform agent, hosting network (+ abuse email, CDN flag) and registrar.
domains__email-auth — MX, SPF and DMARC for a domain, the mail provider, issues found and a grade.
domains__ideas — Rule-based domain candidates for a keyword: exact, stopword-free, hyphenated, prefixed and suffixed, across chosen TLDs, with a trademark flag.