CodePostalPro for Claude.ai

com.codepostalpro/postal-codes

Postal lookups for 120 countries with cited sources; deep US tier: demographics, climate, area codes

client:Claude.ai transport:streamable-http tools:7

Install CodePostalPro in Claude.ai

Settings → Connectors → Add custom connector

https://api.codepostalpro.com/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

lookup_postal_code
search_places
nearby_places
get_region
get_group
area_code_lookup
list_countries

CodePostalPro in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

CodePostalPro MCP server