dev.plugrail/jp-calendar
PlugRail Japanese Calendar
Japanese holiday and business-day calculations using official Japan Cabinet Office data.
alive probed 2026-10-07 · HTTP 200
4tools
1.8ktokens in Claude Opus 5.5
1.8ktokens in Claude Code
0.9 %of a 200k context window
1.2ko200k_base estimate
1.3 sto initialize
102 msto list tools
- Endpoint
- https://jp-calendar.plugrail.dev/mcp (streamable-http)
- Host
- jp-calendar.plugrail.dev
- Protocol
- 2025-11-25
- Reports itself as
- jp-calendar 0.2.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-07. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/plugrail/servers
- Website
- https://plugrail.dev
- Registry
- active, updated 2026-10-07 · registry entry
- Reachable
- 7 of the last 7 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| business_days_between | 484 | 40 % |
| add_business_days | 386 | 32 % |
| list_holidays | 206 | 17 % |
| is_holiday | 123 | 10 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-07 11:06 | alive | 3.2 s | 4 | 1.8k | 1.2k |
| 2026-10-05 13:59 | alive | 1.3 s | 4 | 1.8k | 1.2k |
| 2026-10-05 00:24 | alive | 943 ms | 4 | 1.2k | |
| 2026-10-04 10:00 | alive | 1.6 s | 4 | 1.2k | |
| 2026-10-04 07:53 | alive | 2.1 s | 4 | 1.2k | |
| 2026-10-03 20:33 | alive | 1.9 s | 4 | 1.2k | |
| 2026-10-03 17:50 | alive | 1.4 s | 4 | 1.2k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/dev.plugrail/jp-calendar)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.