PostCode Check

Overview

PostCode Check is an MCP server that validates and normalizes postal codes offline across 252 countries and territories, performing format checks to ensure data accuracy. It integrates directly into AI assistants as a callable tool, letting models handle postal code validation tasks automatically on your behalf.

The server runs as a hosted remote endpoint at https://postcodecheck.mike-tusa.workers.dev/mcp with no authentication required and nothing to install locally. Version v0.2.3 is the latest release. Just point your MCP client to the endpoint and start validating postal codes immediately.

PostCode Check appears in the Development category on mcp.site and works with Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and other MCP clients. If you maintain this server, claim your listing to earn a Verified badge and ensure the information stays accurate.

Installation

Settings → Connectors → Add custom connector
Name: PostCode Check
URL:  https://postcodecheck.mike-tusa.workers.dev/mcp