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Postio — UK Address, Postcode, Email & Phone Validation MCP Server
Validate UK addresses, postcodes, emails and phone numbers — Royal Mail PAF, live SMTP and HLR.
Install
~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"postio-uk-mcp": {
"command": "npx",
"args": [
"-y",
"@postio/mcp@0.1.4"
],
"env": {
"POSTIO_API_KEY": "YOUR_POSTIO_API_KEY",
"POSTIO_BASE_URL": ""
}
}
}
}
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Environment
| Name | Required | Notes |
|---|
| POSTIO_API_KEY | Yes | Postio API key (pk_…). Free key, first 100 lookups on us, no card: https://postio.co.uk/signup Secret. |
| POSTIO_BASE_URL | No | Override the API base URL. Defaults to https://api.postio.co.uk. Only needed for staging. |
Tools show up when the registry metadata or the repository README lists them. GitHub enrichment fills this in when a token is configured.
About
Validate UK addresses, postcodes, emails and phone numbers — Royal Mail PAF, live SMTP and HLR.
FAQ
- What is Postio — UK Address, Postcode, Email & Phone Validation?
- Validate UK addresses, postcodes, emails and phone numbers — Royal Mail PAF, live SMTP and HLR.
- How do I install Postio — UK Address, Postcode, Email & Phone Validation?
- Pick a client above and copy the generated config. Cursor and VS Code also have a deep link when the server can run locally or remotely.
- Is Postio — UK Address, Postcode, Email & Phone Validation official?
- No. Registry-listed is not the same as vendor-official. Read the methodology for the difference.
- How is the trust score calculated?
- This listing scores 50 (Fair). The formula is published on the methodology page.
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