TLDMath MCP connector
TLDMath lets an AI assistant check whether a domain is free and where it is cheapest, comparing live prices at Porkbun, Namecheap, Dynadot, Cloudflare and Vercel. Registrars are ranked by what the domain costs over two years, renewals included.
Connect
https://www.tldmath.com/mcp- Transport: Streamable HTTP (stateless). Supports the 2026-07-28 MCP spec and 2025-era clients.
- Authentication: none. No account or API key.
- Listed in the official MCP Registry as
com.tldmath/tldmath, and on Smithery. - All tools are read-only (readOnlyHint), non-destructive and open-world.
- Claude: Settings → Connectors → Add custom connector. ChatGPT, Cursor and Meta Muse: add a remote MCP server with the URL above.
Tools
| Tool | What it does | Input |
|---|---|---|
| check_domain | Live availability and per-registrar registration, renewal and transfer prices for one exact domain, with a recommendation by two-year cost and a buy link. | domain (e.g. "acme.dev"), optional fresh |
| check_name_across_tlds | One name across up to 8 TLDs: availability and best two-year price for each. | name (e.g. "acme"), optional tlds |
| recommend_names | From a project description: 3–5 TLDs ranked with reasons, and 10 name ideas screened for availability. | description (10–600 characters) |
| brand_check | Whether a name is taken on GitHub, npm, PyPI, crates.io and YouTube; links to check X, Instagram and TikTok and to the USPTO and WIPO trademark databases. | name |
| check_renewals | For domains the user owns: registrar, expiry date, renewal price and the cheapest place to transfer, with the two-year saving. | domains (1–20) |
| plan_dns_setup | The DNS records a domain needs for a website host (Vercel, Netlify, GitHub Pages, Cloudflare Pages) and an email provider (Google Workspace, Microsoft 365, Zoho, Fastmail, Proton, iCloud, Cloudflare forwarding), each checked against live DNS. Never changes DNS. | domain, host and/or email, optional host_target |
| tld_price_changes | Announced registry price increases (upcoming and past year) and registrar price changes from the daily checks. | optional tld, optional days |
| compare_tld_prices | Standard prices for one TLD across registrars, refreshed daily. | tld (e.g. "io") |
| list_supported_tlds | TLDs with daily price tables and the registrars queried live. | none |
Example prompts
- “Is acme.dev available, and where is it cheapest over two years?”
- “I’m building a carpool app for parents of kids’ sports teams. Suggest names and a domain.”
- “Check the name launchly on .com, .io and .ai.”
- “How much does a .ai domain really cost, including renewal?”
- “I own example.org and pay $20 a year to renew it. Should I move it?”
- “Is the name rostvale free on GitHub and npm?”
- “Is .com going up in price? Should I renew early?”
- “I host acme.dev on Vercel and want Fastmail. What DNS records do I need?”
Limits and behaviour
- Rate limits per client IP: 60 MCP requests per minute; name recommendations 6 per minute. Over the limit returns a clear rate_limited error.
- Errors use stable codes such as invalid_domain, tld_not_tracked, rate_limited and model_error, so an assistant can recover.
- Prices are USD per year. TLDs with a multi-year minimum (like .ai) show the upfront checkout total separately.
- Availability and prices are live snapshots; users should confirm at checkout. Some TLDs (.io, .me, .so) have no public registry lookup for expiry dates.
- TLDMath compares only. It does not register domains or take payment. Some buy and sign-up links are disclosed affiliate links and never affect the ranking.
Data and support
The connector receives only tool arguments (a domain, name, TLD, project description, list of domains, or a host and email provider choice). See the privacy policy and terms of use. Questions: support@tldmath.com.