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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "holiday": {
      "type": "http",
      "url": "https://holiday.omikuji.dev/mcp"
    }
  }
}

claude mcp add --transport http holiday https://holiday.omikuji.dev/mcp

[mcp_servers.holiday]
url = "https://holiday.omikuji.dev/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "holiday": {
      "type": "remote",
      "url": "https://holiday.omikuji.dev/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "holiday": {
      "type": "http",
      "url": "https://holiday.omikuji.dev/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=holiday&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vaG9saWRheS5vbWlrdWppLmRldi9tY3AifQ%3D%3D"
}

{
  "servers": {
    "holiday": {
      "type": "http",
      "url": "https://holiday.omikuji.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "holiday": {
      "httpUrl": "https://holiday.omikuji.dev/mcp"
    }
  }
}

extensions:
  "holiday":
    enabled: true
    name: "holiday"
    type: streamable_http
    uri: "https://holiday.omikuji.dev/mcp"
    timeout: 300

Quality 89 / 100new

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

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 hygiene100 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations4 of 4 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 1,292 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool history recorded for 5 of the 7 days needed

dependenciesn/a · weight 15

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

4 tools, about 1,292 tokens to load them all · tool set 9203b6c07e50 · tools last changed 2026-10-15 · checked 2026-10-20 07:21 UTC

Tool changes

2026-10-15find_long_weekendschangedinput schema
2026-10-15business_dayschangedinput schema
2026-10-15list_holidayschangedinput schema
2026-10-15check_dateschangedinput schema
2026-10-15find_long_weekendschangeddescription, input schema, annotations
before
Find 連休 (3+ consecutive days off made of weekends and national holidays), e.g. Golden Week, Silver Week. Give a year, or from (default today) to list upcoming ones.
after · 82% of words in common
Find 連休 (3+ consecutive days off made of weekends and national holidays), e.g. Golden Week, Silver Week. Give a year, or from (default today) to list upcoming ones. With country, the same for that country.
2026-10-15business_dayschangeddescription, input schema, annotations
before
Count business days between start and end (inclusive), or find the date that is N business days after start (add=N; negative N goes backward; start itself is not counted). Business day = weekday that is not a national holiday. Set year_end_closed to also skip 12/29-1/3.
after · 81% of words in common
Count business days between start and end (inclusive), or find the date that is N business days after start (add=N; negative N goes backward; start itself is not counted). Business day = weekday that is not a national holiday. Set year_end_closed to also skip 12/29-1/3. With country, uses that country's weekend days, holidays and make-up workdays.
2026-10-15list_holidayschangeddescription, input schema, annotations
before
List Japanese national holidays for a year, or between from and to. With no arguments, lists the next 10 holidays from today (Japan time).
after · 71% of words in common
List Japanese national holidays for a year, or between from and to. With no arguments, lists the next 10 holidays from today (Japan time). With country, lists that country's public holidays (and make-up workdays, if any).
2026-10-15check_dateschangeddescription, input schema, annotations
before
For each date, tell whether it is a Japanese national holiday (with name and kind: 祝日 / 振替休日 / 国民の休日), a weekend, and a business day. Also returns today in Japan time. Use this instead of guessing weekdays or holidays.
after · 53% of words in common
For each date, tell whether it is a Japanese national holiday (with name and kind: 祝日 / 振替休日 / 国民の休日), a weekend, and a business day. Also returns today in Japan time. With country, the same for that country (holiday names, status, make-up workdays such as China's 调休).

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 83 / 100

no-repository

provenance55

liveness100

freshness100

hygiene80

+dns-namespace +website +reachable +uptime-100% +updated-5d-ago -no-repository

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://holiday.omikuji.dev/mcp` streamable-http	none	yes	100%	316 ms	2025-11-25	2026-10-20

Tools (4)

`business_days`read-only	Count business days between start and end (inclusive), or find the date that is N business days after start (add=N; negative N goes backward; start itself is not counted). Business day = weekday that is not a national holiday. Set year_end_closed to also skip 12/29-1/3. With country, uses that country's weekend days, holidays and make-up workdays.
`check_dates`read-only	For each date, tell whether it is a Japanese national holiday (with name and kind: 祝日 / 振替休日 / 国民の休日), a weekend, and a business day. Also returns today in Japan time. With country, the same for that country (holiday names, status, make-up workdays such as China's 调休).
`find_long_weekends`read-only	Find 連休 (3+ consecutive days off made of weekends and national holidays), e.g. Golden Week, Silver Week. Give a year, or from (default today) to list upcoming ones. With country, the same for that country.
`list_holidays`read-only	List Japanese national holidays for a year, or between from and to. With no arguments, lists the next 10 holidays from today (Japan time). With country, lists that country's public holidays (and make-up workdays, if any).

Schemas: list_tools.

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More from dev.omikuji

Official server.json

{
  "name": "dev.omikuji/holiday",
  "title": "Japan & World Public Holidays",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://holiday.omikuji.dev/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.1.0",
  "websiteUrl": "https://holiday.omikuji.dev/ai/",
  "description": "Public holidays, business days and long weekends for Japan (Cabinet Office) and 245 other countries."
}