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NetIntel Currency Exchange History
x402
NetIntel Currency Exchange History is a paid API for AI agents from netintel.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Returns a daily historical exchange-rate series for any fiat or crypto currency pair, with min/max/average/change/volatility stats, over a configurable date range.
Price / call$0.02
Success—
StatusUnknown
How this service works
Daily historical exchange-rate series for any currency pair — fiat via ECB reference data, crypto via Coinbase daily closes — with min/max/average/change stats, no API key. Pass start/end dates or a days lookback (default 30). The history sibling of /currency-exchange/convert: trend and repricing context for the pairs agents already quote spot.
Output
Returns a JSON object containing the currency pair (from/to), date range (start/end), a series array of {date, rate} objects with one entry per calendar day data was available, aggregate stats (min, max, average, change_pct, volatility_pct), the data source used (frankfurter, ecb-xml, currency-api, or coinbase), point count, cache age in seconds, and a stale flag. The rate field represents units of the target currency per 1 unit of the base currency on each date.
Example use cases
Crypto repricing trend analysis
“Show me the daily BTC to USD exchange rates for the past 90 days — I want to see the min, max, average, and total percentage change so I can understand the recent price trend.”
Invoice currency risk check
“What was the daily GBP to USD exchange rate from January 1st to March 31st this year? I need the average rate and how much it moved so I can assess currency risk on a UK invoice.”
Fiat pair volatility monitoring
“Get the last 30 days of daily closing rates for USD to JPY and tell me the volatility percentage and overall change so I can see if the yen has been stable lately.”
Technical details
Endpoint
GEThttps://netintel.dev/currency-exchange/historyWhen to prefer
Choose this endpoint when you need historical daily exchange rate data over a date range — for trend analysis, repricing context, volatility assessment, or min/max/average stats — rather than a single spot conversion. It covers both fiat pairs (via ECB reference rates) and crypto pairs (via Coinbase daily closes) with no API key required. Prefer the sibling /currency-exchange/convert endpoint for a single current spot rate.
Side effects
- Missing required 'from' or 'to' query parameters returns a 400 error
- Unsupported or misspelled currency code returns an error or empty series
- Date range exceeding caps (ECB fiat 366d, other fiat 90d, crypto 300d) may return truncated data or an error
- Future end dates return data only up to the latest available close
- Weekend/holiday gaps in fiat ECB data may reduce point count below expected days
- Stale flag set to true if cached data is older than expected refresh cycle
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "EUR",
"end": "2026-08-01",
"from": "USD",
"stale": false,
"start": "2026-07-26",
"stats": {
"max": 0.87974,
"min": 0.8707,
"average": 0.87626,
"change_pct": -0.94,
"volatility_pct": 0.34
},
"series": [
{
"date": "2026-07-24",
"rate": 0.87897
},
{
"date": "2026-07-27",
"rate": 0.87804
},
{
"date": "2026-07-28",
"rate": 0.87974
},
{
"date": "2026-07-29",
"rate": 0.87873
},
{
"date": "2026-07-30",
"rate": 0.87138
},
{
"date": "2026-07-31",
"rate": 0.8707
}
],
"source": "frankfurter",
"findings": [
{
"rule": "non_trading_days_omitted",
"detail": "ECB publishes business days only — weekends and holidays have no reference rate and are omitted, never interpolated"
}
],
"point_count": 6,
"cache_age_seconds": 0
}
}Tags
x402
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