IP Blacklist Skill

Overview

An IP reputation and threat intelligence API for firewalls, fraud checks and email security. IP Blacklist Lookup checks IPs against comprehensive blocklists that are updated multiple times daily. Inbound lists contain IPs known for spam, scanning, and brute-force attacks. Outbound lists contain known malicious destinations like command-and-control servers and malware hosts.

Live Test IP Blacklist Skill Skill →

The tool

Once your client is connected to the VerveKit server, this appears in its tool list as IPBlacklistSkill. It is read-only and open-world — it fetches and never mutates anything on your side — so most clients call it without asking you to confirm.

{
  "name": "IPBlacklistSkill",
  "arguments": {
    "ip": "185.220.101.1"
  }
}

You do not name the tool yourself; the model picks it. Asking about 185.220.101.1 in the terms this skill covers is enough for it to reach for IPBlacklistSkill on its own — naming it explicitly also works, and is the way to force the call.

Connecting

One server URL covers every skill in the catalog, including this one. Authorization is OAuth: the client opens a browser once, and there is no key to paste into a config file.

{
  "mcpServers": {
    "vervekit": {
      "url": "https://api.vervekit.com/v1/mcp"
    }
  }
}

https://api.vervekit.com/v1/mcp

Per-client setup — Claude, Cursor, VS Code, ChatGPT — is on the MCP setup page.

Arguments

These are the properties on the tool's inputSchema, so a well-behaved client validates them before the call is made. Premium arguments are accepted on every plan but only take effect on plans that include them.

What the model gets back

The result carries a structuredContent object matching the tool's declared outputSchema, so a client reads fields without parsing prose. status is "ok" and error is null on success; a null field means the value was not available for that input, not that the call failed.

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{
  "status": "ok",
  "error": null,
  "data": {
    "ipAddress": "185.220.101.1",
    "isIPBlacklisted": true,
    "inbound": {
      "found": true,
      "description": "IP is known for malicious inbound activity (spam, scanning, brute-force attacks)"
    },
    "outbound": null,
    "threatLevel": "high",
    "isTor": true,
    "ipDetails": {
      "ip": "185.220.101.1",
      "country": "DE",
      "region": "BY",
      "timezone": "Europe/Berlin",
      "city": "Nuremberg",
      "coordinates": [
        49.4478,
        11.0683
      ],
      "countryName": "Germany",
      "regionName": "Bavaria",
      "postalCode": "90403",
      "continent": "EU",
      "continentName": "Europe",
      "accuracyRadius": 20,
      "isEU": true
    },
    "asn": "AS60729",
    "asnName": "TORSERVERS-NET"
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Failure modes

Errors come back as tool errors carrying a sentence the model can act on, not a bare status code. Error handling covers the full list.

A call costs 10 credits each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.

Use cases

Firewall Enhancement

Automatically block connections to/from known malicious IPs to strengthen your security posture

Threat Detection

Identify if incoming traffic originates from known malicious sources before processing requests

Outbound Security

Detect if your systems are attempting to connect to known command-and-control or malware servers

Security Auditing

Check historical connection logs against current threat intelligence to identify past compromises

Other ways to use IP Blacklist Skill

Set up IP Blacklist Skill on VerveKit, or reach the same source a different way. Your VerveKit account and credits work on all of them — one key, one balance.

Related

Pages that use this skill:

• Block fake signupsGuides

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