eFon international call rates & VoIP

Connect it to your AI

Claude Code

claude mcp add --transport http call-rates https://efon.com/mcp

Claude, ChatGPT, Cursor and other apps

Add it as a custom connector with this URL (Streamable HTTP):

https://efon.com/mcp

Cursor, VS Code and other apps (mcp.json)

{
  "mcpServers": {
    "call-rates": {
      "url": "https://efon.com/mcp"
    }
  }
}

Tools it offers

4 tools, as the server itself reported during our check on Oct 31, 2026.

• get_call_rateseFon per-minute prices (EUR and USD) for calling a country, live: every rate line (mobile / landline / specific networks or regions), the cheapest price, any announced price change, the country page URL and app download
• compare_call_rateseFon rate comparison: cheapest per-minute price (EUR and USD) for several countries, sorted from cheapest to most expensive, each with its country page URL. Use this when the user calls more than one country ("rates to I
• how_to_calleFon dialing guide for calling a destination country from an origin country: exit code, country code, example mobile and landline numbers written the way to dial them, the time difference and the hours when it is daytime
• lookup_calling_codeeFon calling-code lookup: which country (or countries, for shared codes like +1, +7 or +44) a code such as +36, 0036 or +1 876 belongs to, with capital, example number and the eFon rate page. Use this for "which country

Questions