Postio — UK Address, Postcode, Email & Phone Validation

uk.co.postio/postcode-address-validation

Validate UK addresses, postcodes, emails and phone numbers — Royal Mail PAF, live SMTP and HLR.

View repository →Homepage →

Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "postcode-address-validation": {
      "command": "npx",
      "args": [
        "-y",
        "@postio/mcp@0.1.5"
      ],
      "env": {
        "POSTIO_API_KEY": "<your POSTIO_API_KEY>"
      }
    }
  }
}
Environment variables
  • POSTIO_API_KEYrequiredsecretPostio API key (pk_…). Free key, first 100 lookups on us, no card: https://postio.co.uk/signup

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.1.5
Registry
active
Published
10/23/2026

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HTML — for your website

<a href="https://serverdex.io/server/uk-co-postio-postcode-address-validation?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="Postio — UK Address, Postcode, Email & Phone Validation — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![Postio — UK Address, Postcode, Email & Phone Validation — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/uk-co-postio-postcode-address-validation?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.