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mcp/harbor
Claude Desktop

PostCode Check for Claude Desktop

dev.workers.mike-tusa.postcodecheck/postcodecheck

Validate and normalize postal codes offline for 252 countries and territories. Format check only.

client:Claude Desktop transport:streamable-http tools:2

Install PostCode Check in Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json 

{
  "mcpServers": {
    "postcodecheck": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://postcodecheck.mike-tusa.workers.dev/mcp"
      ]
    }
  }
}

Claude Desktop has no remote transport in its config file, so this bridges through mcp-remote. Restart the app after saving. Claude Desktop docs

What Claude Desktop can do once it is connected

PostCode Check in other clients

PostCode Check MCP server