MCP server · Communication & messaging

Northline WebKit

By northline-webkit.northline-c86.workers.dev Verified namespace

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

Website AI models & agents Productivity & docs Cloud & infrastructure

Connect to Northline WebKit

Checks passed: 13 / 22

1 failed · 8 not measured

Median response: 64 ms

Median of successful probes over 7 days

30-day uptime: Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools: 10

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked 22 hr ago

Check summary by test group
Test area	Passed	Failed	Unmeasured
ConnectionCan a client connect and discover tools?	5	0	0
Reliability & speedDoes it respond consistently and quickly?	0	0	4
Access & authenticationWhat is required to use this server?	1	0	2
Tool qualityAre the tool definitions usable by an agent?	4	0	0
Publisher identityCan the publisher be traced to its source?	3	1	2

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

Pass
Reachable
Latest probe returned HTTP 200 in 64 ms.
22 hr ago
Pass
Valid handshake
protocolVersion 2025-06-18, serverInfo.name northline-webkit.
22 hr ago
Pass
Lists tools
tools/list returned 10 tools.
22 hr ago
Pass
Current protocol
Negotiated 2025-06-18. The bar is 2025-06-18 or newer.
22 hr ago
Pass
HTTPS
The endpoint URL is https.

Performance

Not measured
Fast (p50)
Median latency 64 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.
Not measured
Consistent (p95)
95th percentile 64 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.
Not measured
Reliable (uptime)
1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.
Not measured
Stable tool list
Fewer than two successful probes in 30 days, so tool-list stability is not measured.
22 hr ago

Access

Pass
Open access
tools/list succeeded with no credential, and the record declares none.
22 hr ago
Not measured
Standard auth
Auth is not required, so the OAuth metadata check does not apply.
Not measured
Free tier cited
No publisher quote has been checked.

Tools

Pass
Tools described
Every tool description is at least 20 characters.
22 hr ago
Pass
Valid input schemas
Every inputSchema is a JSON Schema object.
22 hr ago
Pass
Parameters documented
11 of 13 parameters have a description (85%). The bar is 80%.
22 hr ago
Pass
Safety hints
Every tool sets readOnlyHint or destructiveHint.
22 hr ago

Publisher

Pass
Verified namespace
Listed in the Official MCP Registry.
Pass
Website matches publisher
The website host matches the reverse-domain namespace.
Fail
Source repo linked
No repository URL is on file.
Not measured
Repo owner matches
This namespace is not an io.github login, so the owner comparison does not apply.
Pass
Recently updated
Updated 2026-10-30T12:27:25.016406Z, within 180 days.
12 days ago
Not measured
Open-source licence
No GitHub repository to ask about a licence.

Start using Northline WebKit

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

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

Capabilities

Tools 10

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).

Discovered 22 hr ago

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).

Discovered 22 hr ago

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).

Discovered 22 hr ago

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).

Discovered 22 hr ago

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).

Discovered 22 hr ago

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).

Discovered 22 hr ago

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).

Discovered 22 hr ago

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).

Discovered 22 hr ago

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).

Discovered 22 hr ago

webkit_catalog

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

Discovered 22 hr ago

Recent measurements

Probe history

View status

Latest stored probes. Raw probe rows are kept for 14 days.
Checked	Result	Response	Tools
22 hr ago	Connected	64 ms	10

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