MCP Jp Calendar runs on your own machine — the client starts it, so there is no endpoint to ping. 39 installs a week from npm. Last commit 31 Jul 2026.
MCP server for Japanese business days, holidays, and fiscal-period calculations.
Today is the operative word: we check MCP Jp Calendar every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add mcp-jp-calendar -- npx -y mcp-jp-calendar
{
"mcpServers": {
"mcp-jp-calendar": {
"args": [
"-y",
"mcp-jp-calendar"
],
"command": "npx"
}
}
}
[mcp_servers.mcp-jp-calendar]
command = "npx"
args = ["-y", "mcp-jp-calendar"]
{
"mcpServers": {
"mcp-jp-calendar": {
"args": [
"-y",
"mcp-jp-calendar"
],
"command": "npx"
}
}
}
{
"mcpServers": {
"mcp-jp-calendar": {
"args": [
"-y",
"mcp-jp-calendar"
],
"command": "npx"
}
}
}
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Answers built from our own checks of this server.