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Gotobi Today Checker
x402
Gotobi Today Checker is a paid API for AI agents from gotobi.hugen.tokyo, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Returns whether today (JST) is a Japanese gotobi day, accounting for weekend and public holiday adjustments
Price / call$0.01
Success—
StatusUnknown
How this service works
Is today a Japanese gotobi day? Gotobi (五十日: 5th, 10th, 15th, 20th, 25th, last business day) drive predictable USDJPY buying pressure before the 9:55 JST Nakane fixing. Weekend and holiday adjustments applied automatically. No public database of gotobi dates exists — this is the only programmatic source. Accepts USDC payments on Base and Solana
Output
Returns a JSON object with today's date (JST), a boolean is_gotobi field indicating whether today is a gotobi day (with weekend and public holiday adjustments applied), and a human-readable English description of the result.
Example use cases
USDJPY trade timing check
“Before I enter my USDJPY position this morning, can you check if today is a gotobi day? I want to know if there's likely to be that predictable buying pressure around the 9:55 JST Nakane fixing before I commit.”
Daily FX report automation
“I'm putting together my morning FX briefing for the team. Can you check whether today is a Japanese gotobi day and include it in the summary so traders know whether to expect gotobi-related USDJPY flows at the Tokyo fix?”
Gotobi calendar alert setup
“I want to know right now if today is one of those Japanese gotobi days — the 5th, 10th, 15th, 20th, 25th, or last business day of the month — with any holiday adjustments already factored in. Can you look that up for me?”
Technical details
Endpoint
GEThttps://gotobi.hugen.tokyo/gotobi/todayWhen to prefer
Use this endpoint when you need a real-time, programmatic check of whether today is a Japanese gotobi day (5th, 10th, 15th, 20th, 25th, or last business day of the month), with automatic adjustments for Japanese public holidays and weekends. This is described as the only programmatic source for gotobi dates. Prefer this over manual date arithmetic, which won't correctly handle holiday roll-forward rules.
Side effects
- Service unavailable — no response from endpoint
- Payment failure — insufficient USDC balance for x402 micropayment
- Timezone edge cases around JST midnight may return unexpected dates
Input
{
"method": "GET"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — |
Output
{
"date": "2026-06-12",
"is_gotobi": false,
"description": "No, today is not a gotobi day."
}Tags
x402
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