Country Calling Codes MCP Server

by kajdep Your server? Claim it

answering

Country Calling Codes is answering right now. Last checked 9 min ago. It exposes 11 tools.

Calling codes, phone analysis, dialing guidance, batch normalization and calling windows.

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 91 days of history · worst day 50%

91 days agonow

50.0%

Uptime 24h

91 of 182 checks

Tools

read from the server

410 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 10

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 8 September 2026. No other catalogue keeps this.

8 Sep 9 tools appeared analyze_phone_number, compare_phone_numbers, diagnose_dialing_problem and 6 more

8 Sep a tool changed version

Country Calling Codes does not always answer

Over the last week it answered 61.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add countrycallingcodesmcp --transport http https://www.countrycalling.codes/api/mcp

Settings → Connectors → Add custom connector, then paste this address

https://www.countrycalling.codes/api/mcp

~/.codex/config.toml

[mcp_servers.countrycallingcodesmcp]
url = "https://www.countrycalling.codes/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "countrycallingcodesmcp": {
      "url": "https://www.countrycalling.codes/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "countrycallingcodesmcp": {
      "type": "http",
      "url": "https://www.countrycalling.codes/api/mcp"
    }
  }
}

This server publishes 1 more address. The block above uses the one we reach during checks; the full list is under Endpoints below, and the author may intend a particular one for your client.

Available tools 11

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

phone

get_phone_capabilities

Discover supported countries, per-operation review coverage, evidence, dataset versions and request limits before choosing a phone workflow.

get_phone_input_rules

Get reviewed display placeholders and trunk-prefix guidance. Examples are not validation masks. English fallback and unsupported editorial coverage are explicit.

analyze

analyze_phone_number

Analyze a number using versioned numbering metadata. National numbers need numberCountryCode; exit prefixes need originCountryCode. Reports uncertainty and rule evidence, never live subscriber status.

calling

find_calling_windows

Find overlapping working hours using explicit IANA time zones and dates. Handles overnight shifts and DST; never infers location from phone numbers or contacts participants.

compare

compare_phone_numbers

Compare two numbers after analysis. Missing context produces indeterminate. Extensions must match unless extensionPolicy is explicitly ignore; equality does not establish ownership.

diagnose

diagnose_dialing_problem

Explain formatting issues and propose reviewed prefix repairs for confirmation. Uses the same analyzer. Cannot determine why a network rejected a call.

dialing

get_dialing_instructions

Prepare origin-specific dialing guidance for reviewed countries. Provide origin and destination separately; no phone number returns safe placeholder patterns. Network-dependent results remain conditional.

format

format_international_phone_number

Normalize a phone number into a plausible international format using reviewed country-specific rules. Processing is ephemeral. This tool does not query carriers, HLR/HSS, MNP databases, or live subscribers.

lookup

lookup_country_calling_code

Look up international country calling codes by free text, ISO code, dial code, or region. Optionally return reviewed, source-linked dialing examples. This tool does not verify live subscriber numbers.

normalize

normalize_phone_numbers

Normalize up to 100 records with unique IDs. Invalid records produce individual errors. Optionally identify canonical duplicate candidates; no contacts are changed or stored.

resolve

resolve_phone_region

Resolve a phone number to metadata-backed country candidates or non-geographic numbering. Results are numbering assignments, not current location or carrier.

Endpoints

URL	Transport	State	Latency	Checked
https://countrycalling.codes/api/mcp	streamable-http	answering	611 ms	10 min ago
https://www.countrycalling.codes/api/mcp	streamable-http	answering	386 ms	9 min ago

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Country Calling Codes — questions

Answers built from our own checks of this server.

What can Country Calling Codes do?

It exposes 11 tools, read directly from the server on our last check. Among them: analyze_phone_number, compare_phone_numbers, diagnose_dialing_problem, find_calling_windows, format_international_phone_number, get_dialing_instructions and 5 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Country Calling Codes working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 182 checks got a reply (50.0%), average response time 410 ms. The bar chart above shows every period we have measured.

Is Country Calling Codes still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect Country Calling Codes?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Country Calling Codes need an API key?

No. Country Calling Codes completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 11 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Country Calling Codes?

It answers our handshake in 410 ms on average, which is faster than 32% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.