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Api Endpoint

Kaisha — Japan Company Registry API

Japanese business-day calculator: check if a date is a business day, add N business days to a date, or count business days in a range. Accounts for weekends and Japanese national holidays; optional Saturday and year-end/new-year rules.

Open interactive test console

Offering

Provider
kaisha-api.hp-vladic.workers.dev
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
General Utilities
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://kaisha-api.hp-vladic.workers.dev/calendar/business-days
MIME type
application/json
First seen
2026-10-16T01:50:06.715Z
Last seen
Tags
japan, calendar, business-days

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.002 USDC
Atomic price: 2000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.002 USDC
Atomic price: 2000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "payTo": "0xF2A6416EBb0C594Ab2977695bED061729ddEb47b"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "2000",
    "payTo": "6nZQJcTRWm6VQwa7Tg1JBUGjNznviS9fExUHb53TB3GG"
  }
]

Observed health

Status
Healthy
Latest latency
1318 ms
Average latency
7933 ms
HTTP status
402
Last checked
Reachability
85.7% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "from": {
          "type": "string",
          "description": "Start date YYYY-MM-DD"
        },
        "add": {
          "type": "number",
          "description": "Add N business days (mode A)"
        },
        "to": {
          "type": "string",
          "description": "End date YYYY-MM-DD (mode B: count)"
        },
        "saturday_off": {
          "type": "boolean"
        },
        "new_year_break": {
          "type": "boolean"
        }
      },
      "required": []
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "json",
  "example": {
    "from": "2026-07-17",
    "result": "2026-07-27",
    "addBusinessDays": 5,
    "resultIsHoliday": null
  }
}