MCP MeasureMCP Measure

index observed

Japan Business Day

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

Should I use this

Quality & Safety

A
Description quality
92%
Schema completeness
95%
Naming quality
88%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~914Tokens (tool definitions)
~1.5 KBTypical response size
Moderate attention impact (0.71% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

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

Remote endpoints

https://japan-business-day-api.matchan962.workers.dev/mcpstreamable-http

What it can do

Tool inventory

Tools (5)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢is_business_day_free(date, calendar)

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.

Input Schema

{
  "type": "object",
  "properties": {
    "date": {
      "type": "string",
      "description": "Date in YYYY-MM-DD. Supported range 1955-01-01..2027-12-31"
    },
    "calendar": {
      "type": "string",
      "enum": [
        "national",
        "bank"
      ],
      "description": "national (default): weekends + national holidays. bank: also Dec 31 - Jan 3 bank holidays"
    }
  },
  "required": [
    "date"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢is_business_day(date, calendar)

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.

Input Schema

{
  "type": "object",
  "properties": {
    "date": {
      "type": "string",
      "description": "Date in YYYY-MM-DD. Supported range 1955-01-01..2027-12-31"
    },
    "calendar": {
      "type": "string",
      "enum": [
        "national",
        "bank"
      ],
      "description": "national (default): weekends + national holidays. bank: also Dec 31 - Jan 3 bank holidays"
    }
  },
  "required": [
    "date"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡add_business_days(date, days, calendar)

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

Input Schema

{
  "type": "object",
  "properties": {
    "date": {
      "type": "string",
      "description": "Date in YYYY-MM-DD. Supported range 1955-01-01..2027-12-31"
    },
    "days": {
      "type": "integer",
      "minimum": -366,
      "maximum": 366
    },
    "calendar": {
      "type": "string",
      "enum": [
        "national",
        "bank"
      ],
      "description": "national (default): weekends + national holidays. bank: also Dec 31 - Jan 3 bank holidays"
    }
  },
  "required": [
    "date",
    "days"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢list_holidays(year, calendar)

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

Input Schema

{
  "type": "object",
  "properties": {
    "year": {
      "type": "integer"
    },
    "calendar": {
      "type": "string",
      "enum": [
        "national",
        "bank"
      ],
      "description": "national (default): weekends + national holidays. bank: also Dec 31 - Jan 3 bank holidays"
    }
  },
  "required": [
    "year"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
⚪payment_due_date(date, closing, monthOffset, payDay, adjust, ...)

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.

Input Schema

{
  "type": "object",
  "properties": {
    "date": {
      "type": "string",
      "description": "Transaction or invoice date (YYYY-MM-DD)"
    },
    "closing": {
      "anyOf": [
        {
          "type": "integer",
          "minimum": 1,
          "maximum": 31
        },
        {
          "type": "string",
          "const": "end"
        }
      ],
      "description": "Closing day of month (1-31) or 'end'"
    },
    "monthOffset": {
      "type": "integer",
      "minimum": 0,
      "maximum": 3,
      "description": "Months after closing; default 1 (next month)"
    },
    "payDay": {
      "anyOf": [
        {
          "$ref": "#/properties/closing/anyOf/0"
        },
        {
          "$ref": "#/properties/closing/anyOf/1"
        }
      ],
      "description": "Payment day of month (1-31) or 'end'"
    },
    "adjust": {
      "type": "string",
      "enum": [
        "previous",
        "next",
        "none"
      ],
      "description": "Shift when not a business day; default previous"
    },
    "calendar": {
      "type": "string",
      "enum": [
        "national",
        "bank"
      ],
      "description": "national (default): weekends + national holidays. bank: also Dec 31 - Jan 3 bank holidays"
    }
  },
  "required": [
    "date",
    "closing",
    "payDay"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Community

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Evidence

Recent observations

verifiedversion not recorded5 tools