日本語 ／ English
Yendoller publishes primary USD/JPY data from the Ministry of Finance, the Bank of Japan, the Federal Reserve and the CFTC. Every value carries its observation date and the time the publisher released it as separate fields.
The site is in Japanese. This page summarises what it is, in English. The API and all machine-readable files use English keys and are language-neutral.
CFTC positioning data reflects Tuesday. It is published Friday at 15:30 ET. For those three days the market does not know the number.
Index a backtest by observation date and the tester reads Friday's number on Tuesday. Results will look good. They will not be real.
| Field | Meaning |
|---|---|
| observation_date | The date the value refers to |
| publisher_release_at | When the market could first know it |
| release_at_method | rule_derived / announced / unknown |
| source_first_seen_at | When we first saw it |
| ingested_at | When we stored it |
| Forecasts, outlooks, price targets | Never |
| Buy / sell signals | Never |
| Event importance ratings (stars) | Never |
| Market consensus estimates | Redistribution licence required |
| Real-time prices | Daily close only |
| Analyst commentary | Never |
These exclusions are written into a charter (49 articles, v0.3) published with its SHA-256. Amendments keep every earlier version. The charter exists to bind the operator: having written "no forecasts", we cannot later add them.
12 series live. Free, no authentication, no registration. Derived values and formatting are CC BY 4.0; rights in the primary data remain with each publisher.
| obs.usdjpy.close.daily | L1 | MARKET_OBSERVATION |
| cftc.legacy.jpy.noncomm_net | L3 | OFFICIAL_PUBLIC |
| cftc.tff.jpy.lev_money_net | L3 | OFFICIAL_PUBLIC |
| drv.gap.jp_us | L2 | DERIVED |
| drv.usdjpy.decomposition | L1 | DERIVED |
| drv.usdjpy.rv | L5 | DERIVED |
| rate.jp.jgb.10y | L2 | OFFICIAL_PUBLIC |
| rate.jp.jgb.2y | L2 | OFFICIAL_PUBLIC |
| rate.us.ust.10y | L2 | OFFICIAL_PUBLIC |
| rate.us.ust.2y | L2 | OFFICIAL_PUBLIC |
| drv.hedge_cost.jpy.rate_component | L2 | DERIVED |
| drv.event_reaction.daily | L1 | DERIVED |
| commodity | PLANNED |
| price | PARTIAL |
| rate_gap | LIVE |
| positioning | LIVE |
| flows | PLANNED |
| volatility | PARTIAL |
| policy | PLANNED |
| intervention | PLANNED |
LIVE = all planned series live. PARTIAL = some live. PLANNED = not yet live; figures shown on the board are placeholders and must not be cited.
| Entry point | Contents |
|---|---|
| /api/v0/index.json | API root |
| /api/v0/status.json | Read before citing any figure. Which layers are live |
| /api/v0/series/index.json | Series catalogue |
| /export/index.json | Full history, CSV and JSONL |
| /api/v0/mt/index.json | MetaTrader feed, ordered by release time |
| /llms.txt | For language models |
Contact: info@yendoller.com ／ Operated by AIMQL LLC, Japan.