Northline WebKit
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...).
- Category
- Crypto & DeFi
- Starting price
- $0.001
- Paid calls · 30 days
- 0
- Unique payers · 30 days
- —
Paid endpoints
9 endpoints, sorted by usage. Prices are per request.
- GET/v1/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...).
$0.001Base0calls / 30d - GET/v1/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.
$0.001Base0calls / 30d - GET/v1/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.
$0.001Base0calls / 30d - GET/v1/url/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.
$0.003Base0calls / 30d - GET/v1/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.
$0.002Base0calls / 30d - GET/v1/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.
$0.002Base0calls / 30d - GET/v1/email/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.
$0.002Base0calls / 30d - GET/v1/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.
$0.002Base0calls / 30d - GET/v1/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.
$0.005Base0calls / 30d