Use our free tools inside your AI assistant
Add one address to Claude, ChatGPT or Cursor and ask it to check your DNS, email, SSL or website. 28 read-only tools, no account and no API key.
Connect it in a minute
The address is the same everywhere, and it needs no login:
https://mcp-tools.tpc-hosting.com/mcpClaude Code
Run this once in a terminal:
claude mcp add --transport http tpc-free-tools https://mcp-tools.tpc-hosting.com/mcpCursor
Add this to your mcp.json:
{
"mcpServers": {
"tpc-free-tools": {
"url": "https://mcp-tools.tpc-hosting.com/mcp"
}
}
}Claude, ChatGPT and other chat apps
Add a custom connector (a remote MCP server) in the app's connector settings and paste the address above. Which apps and plans offer custom connectors is up to the app, and it changes over time.
What you can ask it
Ask in plain language. The assistant picks the right tools and explains the result.
- Check the SPF, DKIM and DMARC setup of example.com and tell me what to fix.
- Is my SSL certificate on example.com about to expire, and is the chain complete?
- I changed my A record an hour ago. Has it propagated yet?
- Why is my site slow? Test the time to first byte and check for HTTP/3.
- Does my robots.txt block GPTBot or ClaudeBot from /blog/?
28 tools it can use
Each tool links to the same check on this site, where you can run it yourself.
DNS
dns_lookupA, AAAA, CNAME, MX, NS, TXT, SOA and CAA recordsdns_propagationDo public resolvers around the world agree yet?dnssec_checkIs the DNSSEC chain of trust intact?digA dig query to Cloudflare, Google, Quad9 or a nameserver you namedns_traceFollow a name from the root servers to its nameserversreverse_dnsPTR name of an IP, with forward confirmation
email_deliverability_reportA score out of 100 for a domain's whole email setupmx_checkMail servers and their prioritiesspf_checkSPF syntax, includes and the 10-lookup limitdkim_checkDKIM public key and its strengthdmarc_checkDMARC policy, reports and alignmentbimi_checkBIMI record and logoemail_blacklist_checkIs a mail server IP or domain on public blocklists?smtp_testLive SMTP and STARTTLS test of a domain's mail servers
Websites
website_down_checkIs a site up, and if not, why?redirect_checkEvery hop of a redirect chainhttp_headers_checkResponse headers with a security reviewttfb_testTime to first byte, from our server in Germanyhttp3_testHTTP/2 and HTTP/3 (QUIC) supporthosting_checkWho hosts a websitewhois_lookupRegistrar, dates and domain age over RDAP
SEO and crawling
robots_txt_testMay a crawler fetch this path? (RFC 9309)sitemap_checkFind and validate an XML sitemapurl_status_checkStatus codes of up to 10 URLs from one site
SSL and network
ssl_checkLive certificate chain, expiry and protocol supporttracerouteNetwork path from our server to a hostip_lookupNetwork, country and reverse DNS of an IPasn_lookupWho runs an AS number
Frequently asked questions
What is an MCP server?
MCP (Model Context Protocol) is the open standard that lets an AI assistant call outside tools. Add our address to a client that supports remote MCP servers and the assistant can run our checks itself and read the results.
Is it free? Do I need an account?
It is free and there is no sign-up or API key. Checks are rate limited per caller so that everyone gets a fair share.
Can it change anything on my servers?
No. Every tool is read-only: it looks something up or connects once to a public server and reports what it saw. Nothing is created, changed or sent, and the SMTP test never sends mail.
Which assistants work with it?
Any client that can connect to a remote MCP server over HTTP and accepts a server without a login. Claude Code and Cursor take the address directly. In chat apps such as Claude and ChatGPT it goes in as a custom connector, if your app and plan offer them.
Why not just ask the assistant to run the checks itself?
Chat apps usually cannot run commands, and a DNS query on port 53, a TLS handshake, an SMTP test on port 25 or a traceroute needs a server on the open internet. These tools run those checks from our server in Germany and return a plain-English review, for example how many of the 10 SPF lookups you use. If your assistant already has a shell, you may not need this.
Can it check any website?
Any public site on the standard ports. Private and reserved addresses are refused, and so is tpc-hosting.com itself. There is no port scanner: the website's open port checker tests only your own address, so it is not offered here.
Is the result safe for the assistant to read?
Whatever a checked server publishes, such as DNS text records or HTTP headers, is passed on as data and labelled as not being instructions. The server has no write tools, so there is nothing it could be talked into changing.
What do you keep?
We do not ask for an account or personal details. To limit abuse, our check server logs which check ran, the host it ran against, the outcome and a hashed caller address.