# Japan Business Day API – Nikkei 225 SQ Day Lookup

> Japan Business Day API – Nikkei 225 SQ Day Lookup is a paid API for AI agents from japan-business-day-api.matchan962.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Returns the Special Quotation (SQ) day and last trading day for Nikkei 225 futures/options for a given contract month (YYYY-MM).

## Facts

- Endpoint: GET https://japan-business-day-api.matchan962.workers.dev/v1/jpx/sq?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/japan-business-day-api-nikkei-225-sq-day-lookup-93276732
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fUsP9HHnW8Ybcnin5e0dp

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-business-day-api-nikkei-225-sq-day-lookup-93276732
```

Example prompt: What's the SQ day and last trading day for Nikkei 225 futures and options for the 2025-06 contract month?

## When to prefer this

Use this endpoint when you need the precise SQ or expiry date for Nikkei 225 futures or options on the JPX/Osaka Exchange for a specific contract month. It handles the rule of moving the 2nd Friday SQ earlier when it falls on a non-trading day, which is complex to calculate manually. Prefer this over generic calendar tools when you need Japan derivatives-specific settlement dates.

## Known failure modes

- Missing or malformed 'month' query parameter (e.g. not in YYYY-MM format) returns a validation error
- Requesting a month outside the supported range may return an empty or error response
- Non-trading calendar data may be stale if the upstream holiday source is not updated
- Payment failure or x402 authentication issue may block the response

## How this service works

Nikkei 225 futures/options SQ (special quotation) day for a contract month: 2nd Friday, moved earlier if a non-trading day, plus the last trading day.

## Output

Returns the SQ (Special Quotation) date for the Nikkei 225 futures/options contract — the 2nd Friday of the contract month (moved earlier if that day is a non-trading day) — plus the last trading day (the day before SQ), for the requested contract month.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "month"
     ],
     "properties": {
      "month": {
       "type": "string",
       "description": "YYYY-MM"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/japan-business-day-api-nikkei-225-sq-day-lookup-93276732/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from japan-business-day-api.matchan962.workers.dev](https://www.zero.xyz/host/japan-business-day-api.matchan962.workers.dev/llms.txt)