AgentUni
Communication & Email

Postio — UK Address, Postcode, Email & Phone Validation

by uk.co.postio / v0.1.4

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

Install

npm / stdio

npx -y @postio/mcp

Client config (Claude Desktop, Cursor, Windsurf and most MCP clients)

{
  "mcpServers": {
    "uk-co-postio-postcode-address-validation": {
      "command": "npx",
      "args": [
        "-y",
        "@postio/mcp"
      ]
    }
  }
}

Source: official MCP Registry record · registry name uk.co.postio/postcode-address-validation · published 2026-08-14 · updated 2026-08-14. Not an endorsement; review the code before connecting it to anything sensitive.

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