Validate and normalize postal codes offline for 252 countries and territories. Format check only.
Connect Remote server
claude mcp add --transport http postcodecheck https://postcodecheck.mike-tusa.workers.dev/mcp
{
"mcpServers": {
"postcodecheck": {
"url": "https://postcodecheck.mike-tusa.workers.dev/mcp"
}
}
}
{
"servers": {
"postcodecheck": {
"type": "http",
"url": "https://postcodecheck.mike-tusa.workers.dev/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://postcodecheck.mike-tusa.workers.dev/mcp
Tools 2 found in our last check
validate_postcodeCheck whether a postal code has a valid format for a country and return its normalized form (uppercase, official space or hyphen), a format example and the country name. Example: country "NL", code "1234ab" → valid true, normalized "1234 AB". Format check only (Google libaddress…
list_countriesList every supported country and territory with its ISO code, English name, whether it uses postal codes, a format example and the local name for the code (zip, eircode, PIN…). Read-only. Same data as GET /v1/countries.
Details
| Endpoint | https://postcodecheck.mike-tusa.workers.dev/mcp (Streamable HTTP) |
| First published | 1 Nov 2026 |
| Last updated | 1 Nov 2026 |
| Registry name | dev.workers.mike-tusa.postcodecheck/postcodecheck |
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