Northline WebKit MCP Server

by workers-northline-c86-northline-webkit Your server? Claim it

answering

Northline WebKit is answering right now. Last checked 3 min ago. It exposes 10 tools.

Pay-per-call web tools for agents: URL to markdown, metadata, links, DNS, email/domain checks, RDAP.

Uptime history 35 hours of history

35 hours agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

113 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Northline WebKit every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add webkit --transport http https://northline-webkit.northline-c86.workers.dev/mcp

Settings → Connectors → Add custom connector, then paste this address

https://northline-webkit.northline-c86.workers.dev/mcp

~/.codex/config.toml

[mcp_servers.webkit]
url = "https://northline-webkit.northline-c86.workers.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "webkit": {
      "url": "https://northline-webkit.northline-c86.workers.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "webkit": {
      "type": "http",
      "url": "https://northline-webkit.northline-c86.workers.dev/mcp"
    }
  }
}

Available tools 10

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

url

url_check

Is this URL up? HTTP status, full redirect chain, final URL, response time, content type, server/CDN and a security-headers grade (HSTS, CSP, X-Frame-Options...). Costs $0.001 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

url_links

Every unique outgoing link on a web page (absolute URLs, anchor text, internal vs external), up to 500. Use it to crawl a site or find related pages. Costs $0.002 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

url_metadata

Link preview and SEO metadata for any URL: title, description, canonical, language, Open Graph and Twitter card, favicon, RSS/Atom feeds and JSON-LD types, after following redirects. Costs $0.002 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

url_to_markdown

Fetch any public web page and return clean, readable Markdown (main content only: no scripts, nav or footer) plus title, word count and final URL. Ideal for feeding pages to an LLM. Costs $0.003 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

domain

domain_report

One-call domain due diligence: RDAP registration (age, registrar, expiry), DNS (A/AAAA/NS/CAA, DNSSEC), email setup (MX/SPF/DMARC), HTTPS reachability with security-headers grade, and risk flags such as newly_registered_lt_30d. Costs $0.005 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

domain_whois

WHOIS for a domain via official RDAP: registered?, registrar, creation/expiry dates, domain age in days, status codes, nameservers, DNSSEC and abuse contact. Spot newly registered (phishing) domains. Costs $0.002 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

dns

dns_lookup

DNS records for a domain over DNS-over-HTTPS: A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, SRV, PTR or HTTPS, with TTLs and DNSSEC validation flag. Costs $0.001 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

email_domain_check

Check an email address or domain before you send: syntax, MX servers, accepts mail?, disposable or free provider, mail provider (Google, Microsoft...), SPF and DMARC policy, with risk flags. Costs $0.002 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

robots

robots_check

May I crawl this URL? Parses robots.txt and answers allowed true/false for your user agent and path, the matching rule, sitemaps, and whether 14 AI crawlers (GPTBot, ClaudeBot, PerplexityBot...) are allowed. Costs $0.001 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

webkit

webkit_catalog

Free. Lists every WebKit tool with its price, required inputs and an example, plus how x402 payment works. Call this first.

Endpoints

URL	Transport	State	Latency	Checked
https://northline-webkit.northline-c86.workers.dev/mcp	streamable-http	answering	144 ms	3 min ago

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Northline WebKit — questions

Answers built from our own checks of this server.

What can Northline WebKit do?

It exposes 10 tools, read directly from the server on our last check. Among them: dns_lookup, domain_report, domain_whois, email_domain_check, robots_check, url_check and 4 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is Northline WebKit mostly used for?

Its tools cluster around url and domain. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is Northline WebKit working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 113 ms. The bar chart above shows every period we have measured.

How do I connect Northline WebKit?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Northline WebKit need an API key?

No. Northline WebKit completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 10 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Northline WebKit?

It answers our handshake in 113 ms on average, which is faster than 90% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.