Connect

8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "web": {
      "type": "http",
      "url": "https://fourzerotwo.si/mcp/v/web",
      "headers": {
        "X-API-Key": "${X_API_KEY}"
      }
    }
  }
}

claude mcp add --transport http web https://fourzerotwo.si/mcp/v/web --header "X-API-Key: ${X_API_KEY}"

[mcp_servers.web]
url = "https://fourzerotwo.si/mcp/v/web"
env_http_headers = { "X-API-Key" = "X_API_KEY" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "web": {
      "type": "remote",
      "url": "https://fourzerotwo.si/mcp/v/web",
      "enabled": true,
      "headers": {
        "X-API-Key": "{env:X_API_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "web": {
      "type": "http",
      "url": "https://fourzerotwo.si/mcp/v/web",
      "headers": {
        "X-API-Key": "${X_API_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=web&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vZm91cnplcm90d28uc2kvbWNwL3Yvd2ViIiwiaGVhZGVycyI6eyJYLUFQSS1LZXkiOiIke1hfQVBJX0tFWX0ifX0%3D"
}

{
  "servers": {
    "web": {
      "type": "http",
      "url": "https://fourzerotwo.si/mcp/v/web",
      "headers": {
        "X-API-Key": "${X_API_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "web": {
      "httpUrl": "https://fourzerotwo.si/mcp/v/web",
      "headers": {
        "X-API-Key": "${X_API_KEY}"
      }
    }
  }
}

extensions:
  "web":
    enabled: true
    name: "web"
    type: streamable_http
    uri: "https://fourzerotwo.si/mcp/v/web"
    headers:
      "X-API-Key": "${X_API_KEY}"
    timeout: 300

Placeholders to fill from your own secret store: ${X_API_KEY}. The registry never accepts secret values.

Quality 91 / 100strong

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene100 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations25 of 25 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 2,653 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

25 tools, about 2,653 tokens to load them all · tool set aceb39ec1573 · checked 2026-10-20 12:13 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 82 / 100

no-repository

provenance55

liveness98

freshness100

hygiene80

+dns-namespace +website +reachable +uptime-94% +updated-9d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://fourzerotwo.si/mcp/v/web` streamable-http	none	yes	94%	565 ms	2025-11-25	2026-10-20

Tools (25)

`domains__abuse-contacts`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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`read-only	ASN, organisation and hosting flag for one IP. Free within the daily allowance, then $0.0005 USDC per call via x402.
`ip-geolocation__batch`read-only	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`read-only	Country and continent for one IP. Free within the daily allowance, then $0.0005 USDC per call via x402.
`ip-geolocation__lookup`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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`read-only	VIN format, check digit, WMI and model-year candidates. Free within the daily allowance, then $0.0005 USDC per call via x402.
`web__read`read-only	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`read-only	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`read-only	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.

Schemas: list_tools.

Similar MCP servers

More from si.fourzerotwo

And 5 more from this publisher.

Official server.json

{
  "name": "si.fourzerotwo/web",
  "title": "Web & domain tools",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://fourzerotwo.si/mcp/v/web",
      "type": "streamable-http",
      "headers": [
        {
          "name": "X-API-Key",
          "isSecret": true,
          "description": "Optional free key from https://fourzerotwo.si/free (raises the free allowance from 100 to 500 calls/day)"
        }
      ]
    }
  ],
  "version": "1.0.1",
  "websiteUrl": "https://fourzerotwo.si",
  "description": "Read any public page as markdown, link previews, URL safety, page audits, domain availability and…"
}