TLDMath

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Live domain availability and prices across registrars, ranked by true two-year cost.

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Copy this into your MCP client config:

{
  "mcpServers": {
    "TLDMath": {
      "url": "https://www.tldmath.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (15)

• check_domain read-only

  Live availability and price comparison for one exact domain (e.g. "acme.io") across registrars. Returns per-registrar registration, renewal and transfer prices, premium status, and a recommendation based on 2-year total cost.

  Parameters:

  • domain (required) — string — A single domain name with its TLD, e.g. "acme.io". No subdomains.
  • fresh — boolean — Bypass the 10-minute cache and query every registrar live. Default false.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• check_name_across_tlds read-only

  Check one name (e.g. "acme") across several TLDs at once and return availability plus the best 2-year price for each. Defaults to .com, .net, .io, .ai, .dev, .app. Max 8 TLDs per call.

  Parameters:

  • name (required) — string — The name without a TLD, e.g. "acme".
  • tlds — array — TLDs to check, without or with a leading dot. Default: com, net, io, ai, dev, app.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• compare_tld_prices read-only

  Standard (non-premium) prices for one TLD across registrars, refreshed daily, sorted by 2-year cost. Use for general questions like "how much is a .io domain"; use check_domain for a specific name.

  Parameters:

  • tld (required) — string — A TLD such as "com", ".ai" or "dev".

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• recommend_names read-only

  Given a short project description, recommend 3-5 TLDs (best fit first, with reasons) and 10 brandable names, each screened for availability on the top 3 TLDs (or up to 3 the user picks) with the cheapest standard 2-year cost. Optional: a naming style, a word every name must contain (anywhere, at the start or at the end), and a maximum length. Nothing is stored. Run check_domain on a pick for live per-registrar prices.

  Parameters:

  • description (required) — string — What the project is, who it is for, and its tone. One to three sentences.
  • tlds — array — Up to 3 extensions to check the names on, e.g. ["com","ai"]. Default: the top 3 recommended.
  • style — string — coined = invented words; evocative = real words that suggest the feeling; descriptive = says what it does; compound = two short words joined.
  • max_length — integer — Longest name allowed, in characters.
  • include_word — string — A word every name must contain, e.g. "pay".
  • word_position — string — Where include_word goes. Default anywhere.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• brand_check read-only

  Check whether a name is free as a handle on GitHub, npm, PyPI, crates.io and YouTube, with links to check X, Instagram and TikTok by hand, plus links to the USPTO and WIPO trademark databases. Not legal advice.

  Parameters:

  • name (required) — string — The name to check, e.g. "acme".

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• check_renewals read-only

  For domains the user already owns (up to 20): current registrar, expiry date, renewal price, and the cheapest registrar to transfer to, with the two-year saving. Registrar and expiry come from the public registry (RDAP); some TLDs such as .io have no RDAP. Suggests a free email reminder service at tldmath.com/watch.

  Parameters:

  • domains (required) — array — Domains the user owns, e.g. ["example.com", "acme.io"].

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• taken_domain_options read-only

  For a domain someone else owns: its registrar and expiry, where it is in the expiry-to-release cycle (active, expiring soon, expired, redemption, pending delete) with an estimated drop window, whether it is parked at a marketplace such as Afternic or Sedo (so possibly for sale), and backorder links. Also points to free email alerts at tldmath.com/watch for when it nears expiry or drops.

  Parameters:

  • domain (required) — string — The taken domain, e.g. "acme.com".

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• compare_email_hosting read-only

  Custom-domain email providers ranked by two-year cost for a number of mailboxes: free forwarding (Cloudflare, ImprovMX), cheap mailboxes (Purelymail, Zoho, Migadu, iCloud+, Namecheap, Hostinger), office suites (Google Workspace, Microsoft 365, Zoho Workplace) and encrypted options (Proton). Includes intro-price traps and per-user vs flat pricing. Prices are curated from each provider’s pricing page with a date.

  Parameters:

  • need — string — forward = forward to an existing inbox; mailbox = a real inbox (default); suite = mail + calendar + docs; private = end-to-end encrypted.
  • mailboxes — integer — How many mailboxes/people. Default 1.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• tld_price_changes read-only

  Announced registry (wholesale) price increases, upcoming and from the past year, plus changes to registrar standard prices seen in TLDMath’s daily checks. Use for "is .com going up?" or "should I renew early?". Optionally filter by TLD.

  Parameters:

  • tld — string — Limit to one TLD, e.g. "com". Omit for all.
  • days — integer — How far back to look for registrar price changes. Default 30.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• plan_dns_setup read-only

  The DNS records a domain needs for a website host or AI app builder (Lovable, Bolt, v0, Replit, Base44, Framer, Webflow, Bubble), an inbox provider, and/or the service an app sends email through (SPF, DKIM, DMARC), each checked against live public DNS (in place, missing, or needs change), plus where the domain’s DNS is hosted and records to remove. SPF records from different providers are merged into one. Read-only: it never changes DNS. Use after the user buys a domain, or when their site or email on a custom domain isn’t working.

  Parameters:

  • domain (required) — string — The domain, e.g. "acme.dev".
  • host — string — Where the website is built or hosted (an AI app builder like lovable or bolt, or a host like vercel).
  • email — string — Inbox provider for people, or "no-email" to lock the domain against spoofing.
  • sender — string — Transactional email service the app sends through (sign-in links, receipts).
  • host_target — string — Netlify site (x.netlify.app), GitHub user, or Cloudflare Pages project (x.pages.dev), when the host needs one.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• plan_launch_steps read-only

  The DNS plan for a domain (website host or AI app builder, inbox, app-email service) as ordered, repeat-safe steps with commands the user’s own tools can run: Vercel CLI, Cloudflare’s API with a token from the CLOUDFLARE_API_TOKEN environment variable, Resend’s API with RESEND_API_KEY; a manual list for other DNS hosts. Only records not yet in place get a command, so call it again after each change. Read-only: TLDMath runs nothing. Follow the guardrails in the result: show each change and ask first, never ask for keys in the chat, no deletes without the user naming the record.

  Parameters:

  • domain (required) — string — The domain, e.g. "acme.dev".
  • host — string — Where the website is built or hosted.
  • email — string — Inbox provider, or "no-email".
  • sender — string — Transactional email service the app sends through.
  • host_target — string — Netlify site (x.netlify.app), GitHub user, or Cloudflare Pages project (x.pages.dev), when the host needs one.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• ownership_card read-only

  Which companies a domain depends on, from public records only: registrar with expiry and renewal price (registry RDAP), DNS host (nameservers), website host (A/CNAME and builder verification records), inbox (MX), and services that send mail as the domain (SPF includes, DKIM and bounce records), plus the DMARC policy. Each line shows its evidence. Use for handoffs (“which accounts do I open when it breaks?”), before moving hosts, or to audit a setup. Read-only, no sign-in.

  Parameters:

  • domain (required) — string — The domain, e.g. "acme.dev".

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• plan_app_move read-only

  An ordered, repeat-safe plan for moving an app built in an AI app builder (Lovable, Bolt, Replit, Base44…) to the user’s own host (Vercel, Netlify, Cloudflare Pages, GitHub Pages) on their domain: export the code, keep the data and sign-ins, deploy and copy environment variables, update auth redirect URLs, add the domain, switch DNS (the builder’s records still live that must go, and the new ones, checked against public DNS), verify, then disconnect the builder. If you can read the project, pass dependency names from package.json and variable NAMES from .env.example: never pass values or secrets. Read-only: it changes nothing. Show the steps and ask before running any command; commands prompt for secret values themselves. Call again after the DNS change to confirm, or use plan_dns_setup.

  Parameters:

  • domain (required) — string — The app’s custom domain, e.g. "acme.dev".
  • from (required) — string — The builder the app runs on today.
  • to (required) — string — Where it moves to.
  • env_names — array — Environment variable names only (from .env.example or the builder’s secrets list). Never values.
  • to_target — string — Netlify site (x.netlify.app), GitHub user, or Cloudflare Pages project (x.pages.dev), when the host needs one.
  • dependencies — array — Package names from package.json dependencies and devDependencies.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• compare_app_email read-only

  Services an app sends email through (sign-in links, password resets, receipts) ranked by two-year cost at a monthly volume, with free-tier daily and monthly caps and overage prices. Prices are curated from each provider’s pricing page with a date. Follow with plan_dns_setup (sender) for the SPF, DKIM and DMARC records.

  Parameters:

  • emails_per_month — integer — How many emails the app sends a month. Default 10,000.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• list_supported_tlds read-only

  TLDs with daily price tables, and the registrars TLDMath queries live.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

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Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.