PostalDataPI MCP Server
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Global postal code lookups, validation, and city search for 70+ countries. Sub-10ms responses.
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- postaldatapi
- Categories
- Other, API
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Setup
Install PostalDataPI MCP Server in your MCP client (Claude Desktop, Cursor, Windsurf, and others).
Repository: https://github.com/postaldatapi/postaldatapi-mcp
Follow the installation instructions in the repository README, then restart your MCP client.
- Look up a postal code— Ask for the city, state, and region associated with a given postal code usinglookup_postal_code.
- Validate a postal code— Check whether a postal code exists for a specific country withvalidate_postal_code.
- Find all codes for a city— Retrieve every postal code serving a particular city viasearch_by_city.
- Get full location metadata— Request coordinates, timezone, elevation, and admin hierarchy for a postal code throughget_postal_code_metadata.
MCP (Model Context Protocol) server forPostalDataPI— lets AI agents look up, validate, and search postal codes across240+ countries and territorieswith rich metadata: timezone, administrative regions, elevation, and coordinates.
Sign up atpostaldatapi.com/register— 1,000 free queries, no credit card required.
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.jsonon macOS):
{ "mcpServers": { "postaldatapi": { "command": "postaldatapi-mcp", "env": { "POSTALDATAPI_KEY": "your_api_key_here" } } } }
- "What city is ZIP code 90210?"
- "Look up UK postcode SW1A"
- "Is 10115 a valid German postal code?"
- "What are the postal codes for Beverly Hills, CA?"
- "Get the coordinates for postal code 100-0001 in Japan"
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 atpostaldatapi.com/countries.
Beyond basic lookups, theget_postal_code_metadatatool returns up to 18 fields per postal code including:
- Coordinates(latitude, longitude)
- Timezone(e.g.,America/Mexico_City,Europe/Berlin)
- Administrative hierarchy(state/province, county, municipality)
- Elevation(meters above sea level)
- Place nameand country information
{ "postalCode": "06000", "country": "MX", "placeName": "Centro", "latitude": 19.4364, "longitude": -99.1553, "timezone": "America/Mexico_City", "adminLevel1": "Ciudad de México", "adminLevel2": "Cuauhtémoc", "elevation": 2239 }
- PostalDataPI
- API Reference
- Documentation
- Python SDK
- Node.js SDK
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