Calendar MCP is listed as active in the registry but did not answer our last check. It exposes 3 tools.
China holidays and lunar calendar lookup, solar-to-lunar conversion and yearly schedule.
The linked repository no longer exists on GitHub — it was deleted or made private.
What changed 3
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 5 September 2026. No other catalogue keeps this.
Calendar MCP does not always answer
Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.
claude mcp add calendar-mcp --transport http https://mcp.pianam.cn/calendar-mcp/mcphttps://mcp.pianam.cn/calendar-mcp/mcp[mcp_servers.calendar-mcp]
url = "https://mcp.pianam.cn/calendar-mcp/mcp"{
"mcpServers": {
"calendar-mcp": {
"url": "https://mcp.pianam.cn/calendar-mcp/mcp"
}
}
}{
"servers": {
"calendar-mcp": {
"type": "http",
"url": "https://mcp.pianam.cn/calendar-mcp/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.
query_holiday
list_holidays
solar_to_lunar
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://mcp.pianam.cn/calendar-mcp/mcp | streamable-http | answering | 666 ms | 8 min ago |
Alternatives to Calendar MCP
same job, measured the same wayDate context for agents: Chinese lunar calendar, solar terms, holidays for 12 regions. Offline.
Scholarly papers, patents, books, standards and PDF conversion
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MCP server with ISO week and calendar tools for date conversion, week math, and weekday lookups.
Chinese almanac: lunar calendar, BaZi 八字, daily 宜忌, lucky-day picker, public holidays.
Unix timestamps, DST-aware time zone conversion, durations, cron schedules, and holiday countdowns
Every kid's team, league and school schedule in one family calendar.
Family schedules and household tools with OAuth. External calendars remain read-only.
Calendar MCP — questions
Answers built from our own checks of this server.