Maskbreak MCP Server

Look up limited public IP intelligence - cloud-hosting ranges and Tor exit nodes - from Claude, Cursor, or another MCP client. Powered by the Maskbreak fraud detection API. Requires Node.js 18+ for the local server.

People who work with bot detection, ip lookup and network intelligence and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in JavaScript.

VERIFIED ACTIVE

LAST COMMIT 2026-09-06 · ★ 2 · #80 OF 292 MAINTAINED API INTEGRATION · VERIFIED 2026-09-30

MIT · JavaScript servers · how we verify → /methodology

01 · Install Maskbreak

before you install - you'll need

SENTINEL_API_KEY

Environment variables documented in the project's README - it lists which are required and which have defaults.

Claude Code

claude mcp add sentinelsup-maskbreak-mcp -- npx -y @sentinelsup/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "sentinelsup-maskbreak-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@sentinelsup/mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

repo age created 2026-08-26 - young repo, little track record yet

license MIT - declared in the repository

npm package @sentinelsup/mcp - published under the repo owner's npm scope (@sentinelsup)

registry vendor namespace com.maskbreak - domain-verified with the official MCP registry

03 · What Maskbreak can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

An agent gets 2 documented tools across read & search, service, including lookup_ip, service_status.

The 2 tools it gives your agent

Extracted from the project's README - what Maskbreak lets an agent do.

lookup_ip: - Public IPv4/IPv6 lookup: known, allow / review / block, risk score, and nullable signal/network metadata. Public-feed coverage is limited to cloud hosting and T
service_status: - Maskbreak API health, uptime, and latency

Latest releases

v0.1.3 · 2026-08-26

Fixes what MCP clients display for this server. · serverInfo announced { name: 'sentinel', version: '0.1.0' } - the name was the old brand, and the version had drifted two releases behind the package. It now reads the…

v0.1.2 · 2026-08-26

First release published from a real repository - @sentinelsup/mcp shipped 0.1.0 and 0.1.1 with a repository field pointing at sentinelsup/sentinel-mcp, which never existed. · Also moves the default API base off the…

04 · Who maintains Maskbreak

Maskbreak is maintained by sentinelsup. It's the only MCP server we track from this author; the repo dates to Aug 2026.

05 · Facts

repository: github.com/sentinelsup/maskbreak-mcp
website: https://maskbreak.com/mcp-server
category: API integration - ranked #80 of 292 actively-maintained API integration servers as of 2026-09-30.
release cadence: 2 releases in the last 90 days (latest 2026-08-26)
registry: com.maskbreak/mcp (active, first published 2026-09-24)
packages: npm:@sentinelsup/mcp

06 · Maskbreak FAQ

What is Maskbreak?

Is Maskbreak still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-06 and it shipped 2 releases in the last 90 days. We re-verify nightly.

How do I install Maskbreak?

Run `npx -y @sentinelsup/mcp`. The README documents one environment variable (SENTINEL_API_KEY) to set first. You can also paste the ready-made client config above.

Does Maskbreak run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Maskbreak

Alternatives to Maskbreak

Maintained API integration servers if Maskbreak isn't the fit.

More API integration MCP servers · Job Search MCP · Afi MCP · Auvik MCP · Avanan MCP · Cork MCP

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