Japan Postal Code Lookup MCP is answering right now. Last checked 2 min ago. It exposes 3 tools. Last commit 14 Oct 2026.
Resolve Japanese 〒 postcodes to prefecture, city and town.
Nothing serious here today
Today is the operative word: we check Japan Postal Code Lookup MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.
claude mcp add jp-postal-lookup-mcp --transport http https://jp-postal-lookup-mcp.donniertf.workers.dev/mcphttps://jp-postal-lookup-mcp.donniertf.workers.dev/mcp[mcp_servers.jp-postal-lookup-mcp]
url = "https://jp-postal-lookup-mcp.donniertf.workers.dev/mcp"{
"mcpServers": {
"jp-postal-lookup-mcp": {
"url": "https://jp-postal-lookup-mcp.donniertf.workers.dev/mcp"
}
}
}{
"servers": {
"jp-postal-lookup-mcp": {
"type": "http",
"url": "https://jp-postal-lookup-mcp.donniertf.workers.dev/mcp"
}
}
}Available tools 3
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
all_matches
batch_postal
postal_lookup
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://jp-postal-lookup-mcp.donniertf.workers.dev/mcp | streamable-http | answering | 132 ms | 2 min ago |
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Japan Postal Code Lookup MCP — questions
Answers built from our own checks of this server.