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Real Effective Exchange Rate (REER) API
x402
Real Effective Exchange Rate (REER) API is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-19).
Returns inflation-adjusted real effective exchange rates for currencies against 64 economies, including country rankings by annual change or a single country's historical series, sourced from BIS data.
Price / call$0.004
Success—
StatusUnknown
How this service works
Real effective exchange rate index (2010 = 100) from the World Bank: rises mean the currency gets dearer and the country loses competitiveness. Ranking with the latest annual change, or one country's yearly series.
Output
Returns a JSON object with the BIS data source label, the number of countries covered (up to 64), and either a ranked array of all countries (each with country code, name, latest REER index value, reference month, and annual percentage change) or a time-series array for a single country over the requested number of months.
Example use cases
Country competitiveness monitoring dashboard
“Pull the latest BIS real effective exchange rate ranking for all 64 economies so I can see which countries have gained or lost competitiveness over the past year.”
Single country REER trend analysis
“Get me the inflation-adjusted real effective exchange rate series for Japan (JP) over the last 24 months so I can track how the yen's competitiveness has evolved.”
Euro area currency strength check
“What's the current real effective exchange rate for the euro area (XM) over the last 12 months according to BIS data? I want to see if it's been gaining or losing purchasing power against trading partners.”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/real-effective-fx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need inflation-adjusted, trade-weighted currency competitiveness data sourced directly from the Bank for International Settlements — specifically when nominal exchange rates are insufficient and you need to account for relative price levels. It is ideal for macroeconomic research, trade competitiveness analysis, and cross-country currency strength rankings rather than spot FX rates or nominal exchange rate lookups.
Side effects
- Invalid or unsupported ISO 2-letter country code returns an error or empty result
- Requesting a country not in BIS broad basket (fewer than 64 economies) may return no data
- Missing required body fields causes a validation error
- Data may have a publication lag of one or more months relative to current date
- Network or upstream BIS data unavailability may cause timeouts
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| months | integer | History length in months (annual data points) |
| country | string | ISO 2-letter code (US, GB, JP, CN...); omit for ranking |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "Index 2010 = 100, annual data.",
"source": "Source: World Bank, World Development Indicators, CC BY 4.0 (https://datacatalog.worldbank.org/public-licenses#cc-by). Selected and reformatted by Vextorium.",
"ranking": [
{
"name": "Venezuela, RB",
"year": "2016",
"index": 741.53,
"country": "VEN",
"annual_change_pct": 139.39
},
{
"name": "Ghana",
"year": "2025",
"index": 86.18,
"country": "GHA",
"annual_change_pct": 27.08
}
],
"countries": 94
}
}Tags
x402
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