eFon international call rates & VoIP

com.efonPublished by efon.comOfficial publisherv1.3.2Updated Oct 24, 2026

International call & VoIP rates: per-minute prices to call 200+ countries, comparison, dialing help.

VerifiedStreamable HTTPWeb executableFinanceCommunication & Collaboration

Overview

AI-generated overview

Lets an assistant look up eFon's per-minute international calling rates, compare rates across countries, get dialing instructions, and identify calling codes.

What you can do
It exposes four tools backed by eFon's live rate data. get_call_rates returns per-minute prices in EUR and USD for calling a country, including mobile, landline and specific network lines, the cheapest price, announced price changes, and the country page link. compare_call_rates ranks the cheapest per-minute price for several countries from cheapest to most expensive. how_to_call gives exit code, country code, example numbers, time difference and shared daytime hours for calling one country from another. lookup_calling_code maps a code such as +36 or 0036 to the country or countries it belongs to.
When to use it
Useful when someone asks what it costs to call a particular country, wants to compare calling costs across several destinations, needs dialing instructions or time-zone guidance, or wants to identify which country an incoming or missed number comes from.
Requirements
A remote streamable HTTP endpoint at efon.com; no package, account, API key, environment variable or header is declared. Network access to the endpoint is needed.
Before you install
Rates are eFon's own published prices and the same regardless of the caller's location, so they are not a comparison with other carriers. The tools are read-only lookups; no payments or account actions are described.

Installation

In SourceWeft

  1. Open eFon international call rates & VoIP in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.efon%2Fcall-rates/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "efon-international-call-rates-voip": {
      "type": "http",
      "url": "https://efon.com/mcp"
    }
  }
}

Tools

4

get_call_rates

eFon call rates to a country

eFon 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 links. Rates are the same wherever the caller is. Use this for "how much does it cost to call X", "cheapest way to call X", "international / VoIP call rates to X" or "is calling X from abroad expensive".

Parameterscountryrequiredlanguage

compare_call_rates

Compare eFon call rates across countries

eFon 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 India, Pakistan and Bangladesh", "which is cheaper to call, Mexico or Colombia?").

Parameterslanguagecountriesrequired

how_to_call

How to dial a country from another

eFon 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 on both ends, plus the eFon guide URL and the cheapest eFon rate. Omit origin for the international (+) format only.

Parametersoriginlanguagedestinationrequired

lookup_calling_code

Which country is this calling code?

eFon 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 is +36", "who is calling me from +233", "what does 00252 mean" or a missed call from an unknown foreign number. Includes the cheapest eFon per-minute rate for calling back and a scam warning for one-ring calls.

Parameterscoderequiredlanguage

Version history

3
  1. v1.3.2LatestOct 20, 2026
  2. v1.2.0Oct 13, 2026
  3. v1.1.1Sep 24, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.