What tools does the whois MCP server provide?

whois exposes 2 tools: whois_batch_lookup, whois_lookup. This list was returned by the running server when we connected to it.

Does whois require an API key?

No. whois answered a tools/list request without credentials.

How do I install whois?

Run: claude mcp add --transport http whois https://whois.ddnsip.cn/mcp. One-click install links for Cursor and VS Code are also available on the server's page.

Connection check verified live · 27h ago

whois

Query WHOIS/RDAP information for domains, IP addresses, CIDR prefixes and ASNs. Self-hostable.

Databases & SQL Browser automation Maps, weather & location

Install

Remote (HTTP)

claude mcp add --transport http whois https://whois.ddnsip.cn/mcp

Tools 2

GitHub stars 64

Installs / wk —

Licence MIT

Transport streamable-http

Last checked 27h ago

Tools & capabilities

2 tools

Read from the running server on 27h ago.

whois_batch_lookup read-only queries*

Query WHOIS/RDAP information for multiple domain names, IP addresses/CIDR prefixes, or ASNs in one call. Results are returned per query with individual statuses. Disabled unless th…

whois_lookup read-only query*

Query WHOIS/RDAP information for a domain name, IP address or CIDR prefix (v4 or v6), or ASN

Context cost

Light

Connecting this server adds 2 tool definitions to every request — roughly 180 tokens before you ask anything.

Adds little to your context. Safe to keep connected.

Estimated at ~90 tokens per tool. Actual size varies with schema complexity — treat this as an order of magnitude, not a measurement.

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Ranked by shared tools where both expose an inventory, otherwise by shared wording.

Source & links

Repository: kincaidyang/whois
Registry: io.github.KincaidYang/whois
Endpoint: https://whois.ddnsip.cn/mcp
Sources: registry + github