MCP server for PostalDataPI — postal code lookups for AI agents
MCP (Model Context Protocol) server for PostalDataPI — lets AI agents look up, validate, and search postal codes across 240+ countries and territories with rich metadata: timezone, administrative regions, elevation, and coordinates.
| Tool | Description |
|---|---|
lookup_postal_code | Get city, state/region, and abbreviation for a postal code (US ZIP, UK postcode, German PLZ, etc.) |
validate_postal_code | Check if a postal code exists in a country |
search_by_city | Find all postal codes for a city |
get_postal_code_metadata | Full metadata: coordinates, admin hierarchy, timezone, elevation, and more |
Sign up at postaldatapi.com/register — 1,000 free queries, no credit card required.
@ThomIvespip install postaldatapi-mcp
claude mcp add --transport stdio postaldatapi -- \
env POSTALDATAPI_KEY=your_api_key_here postaldatapi-mcp
Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS):
{
"mcpServers": {
"postaldatapi": {
"command": "postaldatapi-mcp",
"env": {
"POSTALDATAPI_KEY": "your_api_key_here"
}
}
}
}
Once configured, ask Claude naturally:
Claude will automatically use the PostalDataPI tools to answer.
240+ countries and territories including US, UK, Canada, Germany, France, Japan, Australia, Brazil, India, and many more. See the full list at postaldatapi.com/countries.
Beyond basic lookups, the get_postal_code_metadata tool returns up to 18 fields per postal code including:
America/Mexico_City, Europe/Berlin)Example response for Mexico City 06000:
{
"postalCode": "06000",
"country": "MX",
"placeName": "Centro",
"latitude": 19.4364,
"longitude": -99.1553,
"timezone": "America/Mexico_City",
"adminLevel1": "Ciudad de México",
"adminLevel2": "Cuauhtémoc",
"elevation": 2239
}
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