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NumerTel MCP Server

Check Polish phone numbers from any AI assistant: who called, is it spam or a scam, is this really a bank's number — plus live phone-abuse stats for Poland.

Backed by NumerTel.pl: 130M numbers built on official UKE numbering ranges, user reports, the state DNO registry and CERT Polska's public Warning List.

Remote server (recommended)

One endpoint, zero install:

https://numertel.pl/api/mcp

Generic config that works in most MCP clients:

{
  "mcpServers": {
    "numertel": {
      "type": "http",
      "url": "https://numertel.pl/api/mcp"
    }
  }
}

claude mcp add --transport http numertel https://numertel.pl/api/mcp

{
  "mcpServers": {
    "numertel": { "url": "https://numertel.pl/api/mcp" }
  }
}

{
  "servers": {
    "numertel": { "type": "http", "url": "https://numertel.pl/api/mcp" }
  }
}

{
  "mcpServers": {
    "numertel": {
      "command": "npx",
      "args": ["mcp-remote", "https://numertel.pl/api/mcp"]
    }
  }
}

Transport: streamable HTTP (JSON-RPC 2.0). Limit: 30 requests/day/IP.

Try asking your assistant

• "Who called me from 500 100 200?"
• "Is +48 22 598 40 44 really my bank, or a scam?"
• "How bad is phone phishing in Poland today?"

Tools

• check_phone_number — full reputation card for a Polish number: operator (original UKE range, MNP note), risk label from user reports, UKE DNO registry status (an incoming call from a DNO number is spoofed by definition), verified official-hotline whitelist, report counts. Inputs: number (string, 9 digits). Read-only, structured output.
• spam_weather — phone-abuse indicators for Poland: new scam domains on CERT Polska's Warning List (today + daily series), DNO registry size and the latest numbers from official warnings. Inputs: days (1-30, default 7). Read-only, structured output, open data (CC-BY).
• check_scam_domain — analyzes a whole pasted suspicious message on two axes: (1) domains, links and email addresses against CERT Polska's official Warning List (a mirror of ~129k scam domains), and (2) Polish phone numbers found in the text against the NumerTel base (UKE DNO registry = spoofing, verified official-hotline whitelist, spam reports). Accepts a single domain/URL/email/number or a full message (extracts evil[.]pl / hxxp:// / +48); suffix match, so login.evil.pl hits evil.pl. Deterministic verdict with the listing date, zero LLM. Re

... View full README on GitHub