Northline WebKit
REMOTE · NORTHLINE-WEBKIT.NORTHLINE-C86.WORKERS.DEV
Pay-per-call web tools for agents: URL to markdown, metadata, links, DNS, email/domain checks, RDAP.
Available components
Last scanned (9 hours ago)
Scores higher than 53% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Web Scraping
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability73
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1064 tokens (~106/item across 10 items; 10 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management20
- Stability observed for 6 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage95
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 85% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 11 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 30 Oct 26 64
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://northline-webkit.northline-c86.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=northline-c86.workers.dev | CN=YE2,O=Let's Encrypt,C=US | 9 Oct 2026 | 7 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 6050988326c4d3bc54c22531dd3842c8f22 |
| SANs: *.northline-c86.workers.dev, northline-c86.workers.dev | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of northline-webkit.northline-c86.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://northline-webkit.northline-c86.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://northline-webkit.northline-c86.workers.dev/mcp | Served over HTTP | 200 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
dns_lookup /v1/dns/lookup ~110
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).
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | Domain name, e.g. example.com |
| type | string | – | – |
No output schema declared.
No examples provided.
domain_report /v1/domain/report ~116
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).
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | Domain name, e.g. example.com |
No output schema declared.
No examples provided.
domain_whois /v1/domain/whois ~103
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).
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | Domain name, e.g. example.com |
No output schema declared.
No examples provided.
email_domain_check /v1/email/check ~94
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).
| Name | Type | Req | Description |
|---|---|---|---|
| string | yes | Email address or bare domain |
No output schema declared.
No examples provided.
robots_check /v1/robots/check ~116
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).
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | Public http(s) URL (scheme optional) |
| userAgent | string | – | – |
No output schema declared.
No examples provided.
url_check /v1/url/check ~98
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).
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | Public http(s) URL (scheme optional) |
No output schema declared.
No examples provided.
url_links /v1/url/links ~105
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).
| Name | Type | Req | Description |
|---|---|---|---|
| external | string | – | Filter to only or exclude external links |
| url | string | yes | Public http(s) URL (scheme optional) |
No output schema declared.
No examples provided.
url_metadata /v1/url/metadata ~95
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).
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | Public http(s) URL (scheme optional) |
No output schema declared.
No examples provided.
url_to_markdown /v1/url/markdown ~121
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).
| Name | Type | Req | Description |
|---|---|---|---|
| maxChars | string | – | Max markdown characters (1000-50000, default 20000) |
| url | string | yes | Public http(s) URL (scheme optional) |
No output schema declared.
No examples provided.
webkit_catalog WebKit catalog (free) ~37
Free. Lists every WebKit tool with its price, required inputs and an example, plus how x402 payment works. Call this first.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the Northline WebKit MCP server?
Northline WebKit is a hosted endpoint at https://northline-webkit.northline-c86.workers.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · northline-webkit.northline-c86.workers.dev
claude mcp add --transport http dev-workers-northline-c86-northline-webkit-webki 'https://northline-webkit.northline-c86.workers.dev/mcp'
What is the Northline WebKit MCP server?
Northline WebKit is an MCP server listed in the public MCP registry as dev.workers.northline-c86.northline-webkit/webkit. Pay-per-call web tools for agents: URL to markdown, metadata, links, DNS, email/domain checks, RDAP. This page covers its hosted endpoint (https://northline-webkit.northline-c86.workers.dev/mcp).
Is the Northline WebKit MCP server safe to use?
Northline WebKit scores 67 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Northline WebKit MCP server expose?
Northline WebKit exposes 10 tools: webkit_catalog, url_to_markdown, url_metadata, url_links, url_check, and 5 more. Their descriptions and schemas cost roughly 995 tokens of context every time the server is loaded.
Does the Northline WebKit MCP server require authentication?
No. We connected to Northline WebKit without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Northline WebKit MCP server still maintained?
Northline WebKit is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.