Japan Business Day MCP Server

by rira365 Your server? Claim it

answering

Japan Business Day is answering right now. Last checked moments ago. It exposes 11 tools.

Japan business days & holidays (official Cabinet Office data). Free tool + x402 USDC paid tools.

Uptime history 21 days of history · worst day 99%

21 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

632 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 6

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 27 September 2026. No other catalogue keeps this.

27 Sep 6 tools appeared bank_value_date, find_lucky_days_japan, japanese_koyomi and 3 more

Nothing serious here today

Today is the operative word: we check Japan Business Day every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add japan-business-day --transport http https://japan-business-day-api.matchan962.workers.dev/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "japan-business-day": {
      "url": "https://japan-business-day-api.matchan962.workers.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.japan-business-day]
url = "https://japan-business-day-api.matchan962.workers.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "japan-business-day": {
      "url": "https://japan-business-day-api.matchan962.workers.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "japan-business-day": {
      "url": "https://japan-business-day-api.matchan962.workers.dev/mcp"
    }
  }
}

Available tools 11

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

business

add_business_days

Add or subtract N Japanese business days from a date (settlement T+N, delivery ETA). Price: $0.01 USDC via x402.

is_business_day

Check whether a date is a business day in Japan (official Cabinet Office holiday data). Returns holiday name (JA/EN) and next/previous business day. Price: $0.005 USDC via x402.

is_business_day_free

FREE: check whether a date between today and 90 days ahead (JST) is a business day in Japan. Official Cabinet Office holiday data, supports bank calendar (Dec 31 - Jan 3). For other dates, business-day arithmetic or holiday lists use the paid tools.

jpx

jpx_record_date

Japanese stocks: last cum-rights trading day and ex-rights date for a dividend/benefit record date (T+2 settlement, holiday-aware). Price: $0.01 USDC via x402.

jpx_sq_date

Nikkei 225 futures/options SQ day and last trading day for a contract month (2nd Friday, moved earlier on holidays). Price: $0.01 USDC via x402.

jpx_trading_day

Is the Tokyo Stock Exchange (JPX) open on a date? Next/previous trading day, first/last trading day of the year. Price: $0.005 USDC via x402.

bank

bank_value_date

When will a Japanese bank transfer be credited? Returns the value date under standard processing (same day before the cutoff, default 15:00 JST, on a bank business day; otherwise next bank business day). Price: $0.01 USDC via x402.

holidays

list_holidays

List Japanese national holidays for a year with JA/EN names. Price: $0.01 USDC via x402.

japanese

japanese_koyomi

Japanese traditional calendar for a date: rokuyo (taian/butsumetsu lucky days), Reiwa era date, lunisolar date, 24 solar terms. Price: $0.005 USDC via x402.

lucky

find_lucky_days_japan

Find auspicious Japanese dates: days in a range matching rokuyo (e.g. taian) and optional weekdays (e.g. sat,sun) for weddings, moving, contracts. Price: $0.01 USDC via x402.

payment

payment_due_date

Japanese payment terms (shimebi/shiharaibi) calculator, e.g. month-end close paid end of next month; shifts to the previous/next business day on weekends/holidays. Price: $0.01 USDC via x402.

Endpoints

URL	Transport	State	Latency	Checked
https://japan-business-day-api.matchan962.workers.dev/mcp	streamable-http	answering	64 ms	0 min ago

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Japan Business Day — questions

Answers built from our own checks of this server.

What can Japan Business Day do?

It exposes 11 tools, read directly from the server on our last check. Among them: add_business_days, bank_value_date, find_lucky_days_japan, is_business_day, is_business_day_free, japanese_koyomi and 5 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is Japan Business Day mostly used for?

Its tools cluster around jpx and business. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is Japan Business Day working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 632 ms. The bar chart above shows every period we have measured.

How do I connect Japan Business Day?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Japan Business Day need an API key?

No. Japan Business Day completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 11 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Japan Business Day?

It answers our handshake in 632 ms on average, which is faster than 16% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.