PostCode Check
by postcodecheck.mike-tusa.workers.dev · dev.workers.mike-tusa.postcodecheck/postcodecheck
Validate and normalize postal codes offline for 252 countries and territories. Format check only.
- Category
- Developer tools
- Connection
- Remote (HTTP)
- Tools
- 2 reported
- Status
- Online
Connect it to your AI
Claude Code
claude mcp add --transport http postcodecheck https://postcodecheck.mike-tusa.workers.dev/mcpClaude, ChatGPT, Cursor and other apps
Add it as a custom connector with this URL (Streamable HTTP):
https://postcodecheck.mike-tusa.workers.dev/mcpCursor, VS Code and other apps (mcp.json)
{
"mcpServers": {
"postcodecheck": {
"url": "https://postcodecheck.mike-tusa.workers.dev/mcp"
}
}
}Tools it offers
2 tools, as the server itself reported during our check on Oct 31, 2026.
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,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.
Questions
What is the PostCode Check MCP server?
Validate and normalize postal codes offline for 252 countries and territories. Format check only. It is made by postcodecheck.mike-tusa.workers.dev and listed in the official MCP Registry as dev.workers.mike-tusa.postcodecheck/postcodecheck. MCP (Model Context Protocol) is the open standard that lets AI apps like Claude, ChatGPT and Cursor use outside tools.
How do I add PostCode Check to Claude?
In the Claude app or claude.ai, open Settings, then Connectors, choose "Add custom connector" and paste https://postcodecheck.mike-tusa.workers.dev/mcp. In Claude Code, run: claude mcp add --transport http postcodecheck https://postcodecheck.mike-tusa.workers.dev/mcp
How do I add PostCode Check to ChatGPT?
ChatGPT can use remote MCP servers as connectors. In ChatGPT settings, under Apps and Connectors, turn on developer mode if asked, create a new connector and paste https://postcodecheck.mike-tusa.workers.dev/mcp.
How do I add PostCode Check to Cursor?
Open Cursor settings, go to MCP, choose "Add new MCP server" (or edit ~/.cursor/mcp.json) and add: { "mcpServers": { "postcodecheck": { "url": "https://postcodecheck.mike-tusa.workers.dev/mcp" } } }
Does PostCode Check work right now?
Yes. It responded when we last checked on 31 Oct 2026. We check remote MCP servers every day.
What can PostCode Check do?
It gives your AI 2 tools, including validate_postcode, list_countries. The full list is on this page.
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Markdown (GitHub README)
[](https://chen.media/mcp/dev-workers-mike-tusa-postcodecheck-postcodecheck)HTML (switches to dark mode on its own)
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