# Japan Holiday & Business-Day API — Add Business Days

> Japan Holiday & Business-Day API — Add Business Days is a paid API for AI agents from holiday.agentic-jp.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Calculates a future or past date by adding a specified number of Japanese business days from a starting date, skipping public holidays and weekends.

## Facts

- Endpoint: POST https://holiday.agentic-jp.com/add-business-days
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/japan-holiday-business-day-api-add-business-days-7c2f67c5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5zXeMZxqLhug_iTNn6Z4r

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability japan-holiday-business-day-api-add-business-days-7c2f67c5 -d '<json body>'
```

Example prompt: Starting from May 1, 2026, what date is 5 Japanese business days later? Make sure to skip any public holidays and weekends.

## When to prefer this

Use this endpoint when you need to calculate a future or past date by adding a precise number of Japanese business days, accounting for Japan-specific public holidays (1955–2027) and weekends. Prefer this over generic business-day calculators when Japan's holiday schedule is critical, such as for Japanese finance, legal, logistics, or HR workflows.

## Known failure modes

- Invalid or malformed start date returns an error
- Date out of supported range (before 1955 or after 2027) may return an error or unsupported response
- Negative or zero business days value may cause unexpected results
- Payment failure via x402 prevents access to the endpoint
- Missing required parameters returns a 4xx error

## How this service works

Japanese public holidays 1955-2027 and business-day calculation. Pay per call with USDC via x402 — no API key.

## Output

A JSON object containing the input start date ('from'), the calculated result date ('result') after skipping weekends and Japanese public holidays, and the number of business days added ('business_days').

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "date": {
   "type": "string",
   "description": "Start date, ISO YYYY-MM-DD."
  },
  "business_days": {
   "type": "number",
   "description": "Business days to add; negative shifts into the past, 0 snaps to the next business day."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "from": "2026-05-01",
  "result": "2026-05-11",
  "business_days": 5
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/japan-holiday-business-day-api-add-business-days-7c2f67c5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from holiday.agentic-jp.com](https://www.zero.xyz/host/holiday.agentic-jp.com/llms.txt)