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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "jp-calendar": {
      "type": "http",
      "url": "https://jp-calendar.plugrail.dev/mcp"
    }
  }
}

claude mcp add --transport http jp-calendar https://jp-calendar.plugrail.dev/mcp

[mcp_servers.jp-calendar]
url = "https://jp-calendar.plugrail.dev/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "jp-calendar": {
      "type": "remote",
      "url": "https://jp-calendar.plugrail.dev/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "jp-calendar": {
      "type": "http",
      "url": "https://jp-calendar.plugrail.dev/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=jp-calendar&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vanAtY2FsZW5kYXIucGx1Z3JhaWwuZGV2L21jcCJ9"
}

{
  "servers": {
    "jp-calendar": {
      "type": "http",
      "url": "https://jp-calendar.plugrail.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "jp-calendar": {
      "httpUrl": "https://jp-calendar.plugrail.dev/mcp"
    }
  }
}

extensions:
  "jp-calendar":
    enabled: true
    name: "jp-calendar"
    type: streamable_http
    uri: "https://jp-calendar.plugrail.dev/mcp"
    timeout: 300

Quality 83 / 100good

protocol88 · weight 25

pass
protocol.modernsupports 2026-07-28 (server/discover)
pass
protocol.statelessanswers without a session
pass
protocol.transportstreamable HTTP
warn
protocol.list_ttltools/list declares ttlMs 0, so clients re-fetch it on every use

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: business_days_between (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); add_business_days (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); is_holiday (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
pass
tools.token_costabout 672 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changes4 tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

4 tools, about 672 tokens to load them all · tool set 2e86c28c338f · tools last changed 2026-10-07 · checked 2026-10-19 10:20 UTC

Tool changes

2026-10-07business_days_betweenchangedinput schema
2026-10-07add_business_dayschangedinput schema
2026-10-07list_holidayschangedinput schema
2026-10-07is_holidaychangedinput schema

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 95 / 100

duplicate-repo

provenance100

liveness96

freshness100

hygiene80

+repository +namespace-matches-repo +dns-namespace +website +reachable +uptime-90% +updated-12d-ago -duplicate-repo(3 names)

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://jp-calendar.plugrail.dev/mcp` streamable-http	none	yes	90%	942 ms	2026-07-28	2026-10-19

Tools (4)

`add_business_days`	指定した日付(date)の翌日から数えてN営業日目(days)の日付を返します。dateの当日は数えません。daysが負の場合は過去方向（dateの前日から遡ってN営業日目）に計算します。土日・日本の祝日を除外し、calendar="banking"を指定すると銀行休業日（12/31〜1/3）も除外します。dateが営業日かどうかだけ知りたい場合は is_holiday を使ってください（days=0でも同じ情報がskipped経由で得られます）。入力例: {"date": "2026-07-10", "days": 3}
`business_days_between`	from〜to間の営業日数を数えます。既定では「fromを含まず、toを含む」境界です（例:「今日から支払期日まで何営業日か」）。include_from/include_toで境界を変更できます。土日・日本の祝日を除外し、calendar="banking"を指定すると銀行休業日（12/31〜1/3）も除外します。from > to の場合はエラーにせず、from/toとinclude_from/include_toを入れ替えて計算した結果の符号を反転した値（負の営業日数）を返します（反対称則: count(A,B,x,y) = -count(B,A,y,x)。A≠B、すなわちfrom≠toの場合に成立する恒等式で、from===toはこの分岐に入らないため対象外）。入力例: {"from": "2026-07-10", "to": "2026-07-20"}
`is_holiday`	指定した日付が日本の祝日（国民の祝日・休日）かどうかを判定します。内閣府公表データに基づきます。入力例: {"date": "2026-01-01"}
`list_holidays`	指定した年または期間の日本の祝日一覧を返します。入力例: {"year": 2026} または {"from": "2026-01-01", "to": "2026-06-30"}

Schemas: list_tools.

Also listed as

2 other active names share this repository: dev.plugrail/jp-corporate, dev.plugrail/jp-recall

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Official server.json

{
  "name": "dev.plugrail/jp-calendar",
  "title": "PlugRail Japanese Calendar",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://jp-calendar.plugrail.dev/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.2.0",
  "repository": {
    "url": "https://github.com/plugrail/servers",
    "source": "github"
  },
  "websiteUrl": "https://plugrail.dev",
  "description": "Japanese holiday and business-day calculations using official Japan Cabinet Office data."
}