Calling codes, phone analysis, dialing guidance, batch normalization and calling windows.
Connect Remote server
claude mcp add --transport http countrycallingcodes https://www.countrycalling.codes/api/mcp
{
"mcpServers": {
"countrycallingcodes": {
"url": "https://www.countrycalling.codes/api/mcp"
}
}
}
{
"servers": {
"countrycallingcodes": {
"type": "http",
"url": "https://www.countrycalling.codes/api/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://www.countrycalling.codes/api/mcp
Tools 11 found in our last check
get_phone_capabilitiesDiscover supported countries, per-operation review coverage, evidence, dataset versions and request limits before choosing a phone workflow.
analyze_phone_numberAnalyze a number using versioned numbering metadata. National numbers need numberCountryCode; exit prefixes need originCountryCode. Reports uncertainty and rule evidence, never live subscriber status.
get_dialing_instructionsPrepare origin-specific dialing guidance for reviewed countries. Provide origin and destination separately; no phone number returns safe placeholder patterns. Network-dependent results remain conditional.
normalize_phone_numbersNormalize up to 100 records with unique IDs. Invalid records produce individual errors. Optionally identify canonical duplicate candidates; no contacts are changed or stored.
compare_phone_numbersCompare two numbers after analysis. Missing context produces indeterminate. Extensions must match unless extensionPolicy is explicitly ignore; equality does not establish ownership.
resolve_phone_regionResolve a phone number to metadata-backed country candidates or non-geographic numbering. Results are numbering assignments, not current location or carrier.
get_phone_input_rulesGet reviewed display placeholders and trunk-prefix guidance. Examples are not validation masks. English fallback and unsupported editorial coverage are explicit.
diagnose_dialing_problemExplain formatting issues and propose reviewed prefix repairs for confirmation. Uses the same analyzer. Cannot determine why a network rejected a call.
find_calling_windowsFind overlapping working hours using explicit IANA time zones and dates. Handles overnight shifts and DST; never infers location from phone numbers or contacts participants.
lookup_country_calling_codeLook 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.
format_international_phone_numberNormalize 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.
Details
| Endpoint | https://www.countrycalling.codes/api/mcp (Streamable HTTP) |
| First published | 12 Nov 2026 |
| Last updated | 12 Nov 2026 |
| Registry name | codes.countrycalling/countrycallingcodes |
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