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NameHound

by namehound.app · remote · no sign-in to list tools · v1.0.0 · published by app.namehound

Is a brand name free as a .com/.net/.org/.app domain and as a Bluesky, Mastodon, npm or PyPI handle?

Changes · 1
CompareRegistry entry

1 tool: 1 change things.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http namehound https://namehound.app/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

1 tool

Changes things 1Claude Code: ask
  • check_name_availabilityUse this when someone asks whether one specific brand, business, product or project name is free as a domain name (.com, .net, .org, .app) and as a handle on Bluesky, Mastodon, Git…Reads text others writeNo findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    Use this when someone asks whether one specific brand, business, product or project name is free as a domain name (.com, .net, .org, .app) and as a handle on Bluesky, Mastodon, GitLab, npm and PyPI, and wants the NameHound Brand Name Score (0-100) for it. Send one name per call, for example "Blue Fern Studio". The name is made into a handle (lowercase letters and numbers). Returns up to 4 rows, each with the check time, the official source and a link to the NameHound page for that name. Results are a snapshot: availability can change, the registrar or platform has the final say, and this is not legal or trademark advice (the score leaves out the trademark part until the person runs the free USPTO search themselves). Do not use it to brainstorm names, to check a list of names, for trademark clearance, or for Instagram, X, TikTok, YouTube, GitHub or other platforms it does not check. It has a small daily limit, so call it only for names the person actually cares about.

    Annotations the server declares

    • title: Check a name: domains, handles and Brand Name Score
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write1
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Looked at Oct 22, 2026, 14:23 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable
yes
HTTP status of an anonymous initialize
200
tools/list served without credentials
yes
Tools that change things, listed without credentials
1
Protocol version
2025-06-18
WWW-Authenticate on 401
not observed
resource_metadata in WWW-Authenticate
none
RFC 9728 protected resource metadata
none
Authorization servers
none
Legacy HTTP+SSE transport
no
Dynamic client registration
not observed
Client ID metadata documents
not observed
  • WarnThe whole server

    The endpoint served tools/list without credentials, and the list has 1 tool that changes things (1 write). Whether a call also works without credentials was not tested: tools are never called.

    Matched text

    https://namehound.app/mcp: tools/list returned 1 tool to an anonymous client, including check_name_availability (write)

    What this check looks for

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http namehound https://namehound.app/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__namehound__check_name_availability"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as namehound. Review it before you use it.

Capability tags behind 1 rule
  • mcp__namehound__check_name_availability untrusted-input