MCP server

Web & domain tools

si.fourzerotwo/web

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Read any public page as markdown, link previews, URL safety, page audits, domain availability and…

Website

At a glance

Type

MCP server

Publisher

fourzerotwo.si (verified by the MCP Registry)

Status

Working at last check

Tools

25

Token cost

About 2,436 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http web https://fourzerotwo.si/mcp/v/web

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.web]
url = "https://fourzerotwo.si/mcp/v/web"

Gemini CLI

{"mcpServers":{"web":{"httpUrl":"https://fourzerotwo.si/mcp/v/web"}}}

Cursor

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

VS Code

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

Antigravity

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

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"web","server_url":"https://fourzerotwo.si/mcp/v/web","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"web","server_url":"https://fourzerotwo.si/mcp/v/web"}

Tools

• domains__abuse-contacts ~107 tokens
  Everyone to send an abuse or takedown report to for a site: platform agent, hosting network (+ abuse email, CDN flag) and registrar. A few free samples a day, then $0.005 USDC per call via x402.
• domains__availability ~82 tokens
  Registered or available, straight from the TLD registry. A few free samples a day, then $0.002 USDC per call via x402.
• domains__dmca-agent ~97 tokens
  Published DMCA / abuse contact (email or form) for a major platform, host, CDN or registrar. A few free samples a day, then $0.002 USDC per call via x402.
• domains__dns ~108 tokens
  A, AAAA, MX, NS, TXT, CNAME and CAA records (or one type). A few free samples a day, then $0.001 USDC per call via x402.
• domains__email-auth ~88 tokens
  MX, SPF and DMARC for a domain, the mail provider, issues found and a grade. A few free samples a day, then $0.003 USDC per call via x402.
• domains__facts ~88 tokens
  Registrar, created, expiry, age, status codes, nameservers and DNSSEC. A few free samples a day, then $0.002 USDC per call via x402.
• domains__ideas ~197 tokens
  Rule-based domain candidates for a keyword: exact, stopword-free, hyphenated, prefixed and suffixed, across chosen TLDs, with a trademark flag. Free within the daily allowance, then $0.002 USDC per call via x402.
• domains__ip-owner ~96 tokens
  Network, organisation, range, country and abuse email for an IP, from the regional internet registry. A few free samples a day, then $0.002 USDC per call via x402.
• ip-geolocation__asn ~83 tokens
  ASN, organisation and hosting flag for one IP. Free within the daily allowance, then $0.0005 USDC per call via x402.
• ip-geolocation__batch ~83 tokens
  Full lookup for up to 100 IPs in one call. A few free samples a day, then $0.02 USDC per call via x402.
• ip-geolocation__country ~80 tokens
  Country and continent for one IP. Free within the daily allowance, then $0.0005 USDC per call via x402.
• ip-geolocation__lookup ~98 tokens
  Country, continent, EU membership, network block, ASN, organisation and hosting flag for one IP. Free within the daily allowance, then $0.001 USDC per call via x402.
• seo__keyword-intent ~92 tokens
  Classify a search keyword as transactional, commercial, navigational or informational. A few free samples a day, then $0.0005 USDC per call via x402.
• seo__links ~83 tokens
  Internal and external links on a page with anchor text and nofollow flags. A few free samples a day, then $0.003 USDC per call via x402.
• seo__page-audit ~98 tokens
  Title, meta, H1, canonical, noindex, hreflang, structured data, OG tags, word count, links, alt text, issues and a score. A few free samples a day, then $0.005 USDC per call via x402.
• seo__robots-check ~114 tokens
  Whether a crawler (Googlebot, GPTBot, ClaudeBot…) may fetch a URL, the rule that decided it, and declared sitemaps. A few free samples a day, then $0.002 USDC per call via x402.
• validators__email ~90 tokens
  Email syntax, whether the domain accepts mail, disposable and role-account flags. Free within the daily allowance, then $0.001 USDC per call via x402.
• validators__iban ~84 tokens
  IBAN mod-97 checksum and country length; UK sort code extracted. Free within the daily allowance, then $0.0005 USDC per call via x402.
• validators__imei ~86 tokens
  Validate an IMEI (length + Luhn) and split TAC, serial and check digit. Free within the daily allowance, then $0.0005 USDC per call via x402.
• validators__uk-phone ~93 tokens
  Classify a UK number (mobile, landline, freephone, premium…) and format as E.164. Free within the daily allowance, then $0.0005 USDC per call via x402.
• validators__uk-postcode ~91 tokens
  Validate and normalise UK postcode format; split outward/inward codes. Free within the daily allowance, then $0.0005 USDC per call via x402.
• validators__vin ~80 tokens
  VIN format, check digit, WMI and model-year candidates. Free within the daily allowance, then $0.0005 USDC per call via x402.
• web__read ~103 tokens
  Main content of a public web page as clean markdown, with title, byline, published date, canonical URL, language, word count and links. A few free samples a day, then $0.003 USDC per call via x402.
• web__unfurl ~99 tokens
  Open Graph and Twitter card data, favicon, theme colour, JSON-LD types, RSS/Atom feeds and sitemaps for a URL. Free within the daily allowance, then $0.002 USDC per call via x402.
• web__url-safety ~116 tokens
  Warning signs for a URL: redirect chain and final destination, TLS certificate, domain age, punycode and brand-lookalike tricks, bare IPs, and security-header grade. Free within the daily allowance, then $0.003 USDC per call via x402.

Browse

• Web scraping
• Domains and DNS
• Converting to Markdown
• Email

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