Postio — UK Address, Postcode, Email & Phone Validation MCP Server

Postio — UK Address, Postcode, Email & Phone Validation is an MCP integration. Validate UK addresses, postcodes, emails and phone numbers — Royal Mail PAF, live SMTP and HLR.

Packages and local setup

The published npm package is @postio/mcp, version 0.1.4. Its declared MCP transport is stdio.

The package declares POSTIO_API_KEY (required): Postio API key (pk_…). Free key, first 100 lookups on us, no card: https://postio.co.uk/signup; POSTIO_BASE_URL: Override the API base URL. Defaults to https://api.postio.co.uk. Only needed for staging..

Before connecting

Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.

Project and source

View the publisher’s registry entry · Project repository · Project website. This profile uses version 0.1.4 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.

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