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FernTool Network Tools

MCP serverVerified domain · ferntool.comRemote● LiveFree to try

24 free tools: IP/VPN lookup, WHOIS, DNS, SPF/DMARC, site up/down, redirects, time zones. No key.

Install

Remote server: your requests and data go to www.ferntool.com. Claude Code: claude mcp add --transport http ferntool-network-tools https://www.ferntool.com/mcp · Claude app: Settings → Connectors → Add custom connector.

What it can do

The tools this server listed when we connected to it, in its own words.

  • get_my_ip — Return the public IP address (and ISP, ASN, location, timezone) of the caller as seen by FernTool. Note: for remote agents this is the IP of
  • lookup_ip — Validate an IPv4/IPv6 address and return its version, scope (public/private/loopback/...), country, ASN and network owner (DB-IP Lite + IPto
  • validate_ip — Check whether a string is a valid IPv4 or IPv6 address and classify it.
  • batch_lookup_ip — Look up 1-100 IPv4/IPv6 addresses at once. Each result has version, scope, country, timezone, ASN, network owner and flags (is_tor, is_datac
  • whois_lookup — WHOIS via RDAP for a domain (registrar, created/expiry dates, status, nameservers, DNSSEC), an IP address (network name, range, owner org, c
  • dns_lookup — Resolve DNS records for a domain via Cloudflare 1.1.1.1 DNS-over-HTTPS. Types: A, AAAA, MX, TXT, NS, CNAME, SOA (default: all).
  • reverse_dns — Reverse DNS (PTR) lookup for an IPv4/IPv6 address, with forward-confirmation check.
  • subnet_mask_convert — Convert between a subnet mask, CIDR prefix, wildcard mask and device count. Input a dotted mask (255.255.255.192 -> /26), a wildcard (0.0.0.
  • subnet_calc — IPv4/IPv6 CIDR subnet calculator: network, netmask, wildcard, broadcast, first/last usable host, total and usable addresses, block type. Opt
  • estimate_ai_cost — Estimate token count and USD API cost of a text across major AI models (OpenAI GPT, Anthropic Claude, Google Gemini), and whether it fits ea
  • make_qr_code — Create a static QR code (never expires) for a URL, Wi-Fi string (WIFI:T:WPA;S:name;P:pass;;), mailto:, tel: or any text up to 2000 character
  • count_words — Exactly count words, characters (with and without spaces), sentences and paragraphs in a text, with reading/speaking time and the most repea
  • get_current_time — Get the exact current date and time (you cannot know it otherwise). Returns Unix seconds and milliseconds, ISO 8601 in UTC and in the reques
  • convert_timestamp — Convert a Unix timestamp (seconds, milliseconds, microseconds or nanoseconds, auto-detected) to a readable date, or a date/time string (e.g.
  • date_calc — Exact calendar maths. With end: days between two dates (plus weeks, months+days, weekdays Mon-Fri, weekend days). With add_days/add_weeks/ad
  • convert_timezone — Convert a time between time zones with daylight saving applied (you cannot do this reliably yourself). from/to accept IANA zones (Africa/Joh
  • random_number — Fair, cryptographically secure random integers (you cannot produce real randomness yourself). min and max are inclusive. unique=true for no
  • pick_random — Fairly pick random winners from a list, shuffle a list, or split people into random even teams, using a cryptographically secure generator (
  • check_dns_propagation — Check whether a DNS change has spread: asks the domain's own authoritative name server (when reachable) and 8 big public resolvers (Cloudfla
  • check_email_security — Can someone fake (spoof) email from a domain? Reads SPF (counts the 10 DNS-lookup limit, follows includes), DMARC (policy, pct, reports, inh
  • check_website_status — Is a website down? Resolves its DNS and loads the URL once (10 s timeout) from FernTool's Cloudflare edge, then returns verdict (up/down), r
  • trace_redirects — Where does a link really go? Follows a URL (short links like bit.ly, tracking links, QR code links) hop by hop without a browser: every redi
  • check_website_legit — Is this website legit or a scam? Follows the URL (redirects included) and returns plain-language warning signs: domain age from RDAP (scam s
  • analyze_email_headers — Is this email real or fake? Paste the raw headers of an email (Gmail Show original, Outlook View message details). Returns who really sent i
  • generate_spf_record — Build one valid SPF TXT record for a domain from the services that send its email (e.g. microsoft365, google, mailchimp, sendgrid, website).
  • ai_service_status — Live status of AI services (ChatGPT/OpenAI, Claude, Gemini API, GitHub Copilot, Perplexity, Cohere) read from their official status pages, c

KitScout test notes

Not tested by KitScout yet. When our harness runs it, pros, cons and the tasks we tried appear here, with the date and evidence.

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