Subdomain API MCP: what works in Claude, ChatGPT, Cursor, and Grok Bot
Find known subdomains of a domain. Passive data; may include historic entries. List or count.
Registry name: app.subdomain/subdomains (v1.0.1)
Status grid
| App | Status | Date tested |
|---|---|---|
| Claude | Untested | Not yet tested |
| ChatGPT | Untested | Not yet tested |
| Cursor | Untested | Not yet tested |
| Grok Bot | Untested | Not yet tested |
| MCP Inspector (reference client) | Untested | Not yet tested |
| MCP TypeScript SDK (reference client) | Untested | Not yet tested |
Hands-on test results
No hands-on tests yet. We do not publish results until we have actually tested.
Automated handshake
No public remote endpoint to check (local or package-only server).
Gotchas
None recorded yet. Gotchas come only from hands-on tests.
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Markdown (README, docs)
[](https://connectorreport.com/c/app-subdomain-subdomains?utm_source=badge&utm_medium=embed&utm_campaign=app-subdomain-subdomains)
HTML
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