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2s FX Timeseries — Historical Currency Exchange Rates
x402
2s FX Timeseries — Historical Currency Exchange Rates is a paid API for AI agents from 2s.io, paid per call via x402, $0.00144/call, status unknown (last checked 2026-09-14).
Returns a time series of daily foreign exchange rates (with summary stats) for one or more currency pairs over a specified date range, sourced from ECB reference rates.
Price / call$0.00144
Success—
StatusUnknown
How this service works
Historical daily exchange-rate series from the European Central Bank (via Frankfurter), with computed summary statistics. Pass base = 3-letter ISO 4217 currency (default USD), start = YYYY-MM-DD, optional end = YYYY-MM-DD (default = latest available), optional symbols = comma-separated target codes (default all), optional amount to scale rates (default 1). Range is capped at 366 days. Returns, per target currency, first/last/min/max/mean rate plus absolute and percentage change over the window, alongside the full daily series. ECB publishes on business days only; weekends and holidays are omitted.
Output
A JSON object containing: a daily series map of date → {currency: rate}, and an items array per currency with summary stats (min, max, mean, first, last, change, pctChange, count), plus metadata (base, start, end, amount, observations) and source attribution (Frankfurter/ECB). All rates are ECB official daily reference rates.
Example use cases
Example prompt
“Can you pull the daily USD to EUR and USD to GBP exchange rates from January 1 2025 through March 31 2025, and give me a summary showing the min, max, mean, and overall percent change for each currency over that period?”
Technical details
Endpoint
GEThttps://2s.io/api/fx/timeseriesWhen to prefer
Use this endpoint when you need historical daily FX rate data over a date range with statistical summaries (min/max/mean/change), especially for ECB reference rates. Prefer this over spot-rate endpoints when trend analysis, range statistics, or multi-day series are needed. Ideal for financial reporting, currency risk assessment, accounting reconciliation, and macroeconomic research using authoritative ECB data. Pay-per-call with no API key required makes it convenient for one-off or automated agent queries.
Side effects
- Missing required 'start' date parameter returns an error
- Invalid ISO 4217 currency codes return no data or error
- Future date ranges return empty or partial data
- Non-trading days (weekends/holidays) have no observations, reducing count
- Unsupported base currency may produce no results
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"end": "2025-03-31",
"base": "USD",
"start": "2025-01-01",
"symbols": "EUR,GBP"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"data": {
"ok": true,
"meta": {
"end": "2025-03-31",
"base": "USD",
"start": "2024-12-31",
"amount": 1,
"series": {
"2024-12-31": {
"EUR": 0.96256,
"GBP": 0.79813
},
"2025-01-02": {
"EUR": 0.9689,
"GBP": 0.80533
},
"2025-01-03": {
"EUR": 0.97097,
"GBP": 0.80584
},
"2025-01-06": {
"EUR": 0.95914,
"GBP": 0.79703
},
"2025-01-07": {
"EUR": 0.96219,
"GBP": 0.7978
},
"2025-01-08": {
"EUR": 0.9722,
"GBP": 0.81084
},
"2025-01-09": {
"EUR": 0.9704,
"GBP": 0.81328
},
"2025-01-10": {
"EUR": 0.9705,
"GBP": 0.81224
},
"2025-01-13": {
"EUR": 0.98058,
"GBP": 0.82526
},
"2025-01-14": {
"EUR": 0.97609,
"GBP": 0.82272
},
"2025-01-15": {
"EUR": 0.97087,
"GBP": 0.81857
},
"2025-01-16": {
"EUR": 0.97352,
"GBP": 0.82027
},
"2025-01-17": {
"EUR": 0.97106,
"GBP": 0.82009
},
"2025-01-20": {
"EUR": 0.96937,
"GBP": 0.81997
},
"2025-01-21": {
"EUR": 0.96553,
"GBP": 0.81639
},
"2025-01-22": {
"EUR": 0.95758,
"GBP": 0.80883
},
"2025-01-23": {
"EUR": 0.96117,
"GBP": 0.81188
},
"2025-01-24": {
"EUR": 0.95493,
"GBP": 0.80608
},
"2025-01-27": {
"EUR": 0.94967,
"GBP": 0.79873
},
"2025-01-28": {
"EUR": 0.9596,
"GBP": 0.8048
},
"2025-01-29": {
"EUR": 0.96191,
"GBP": 0.80534
},
"2025-01-30": {
"EUR": 0.96126,
"GBP": 0.80443
},
"2025-01-31": {
"EUR": 0.96219,
"GBP": 0.80446
},
"2025-02-03": {
"EUR": 0.97333,
"GBP": 0.80919
},
"2025-02-04": {
"EUR": 0.96759,
"GBP": 0.80492
},
"2025-02-05": {
"EUR": 0.95951,
"GBP": 0.79721
},
"2025-02-06": {
"EUR": 0.96525,
"GBP": 0.8078
},
"2025-02-07": {
"EUR": 0.96367,
"GBP": 0.80325
},
"2025-02-10": {
"EUR": 0.96899,
"GBP": 0.80701
},
"2025-02-11": {
"EUR": 0.96862,
"GBP": 0.80739
},
"2025-02-12": {
"EUR": 0.96432,
"GBP": 0.80365
},
"2025-02-13": {
"EUR": 0.96246,
"GBP": 0.80186
},
"2025-02-14": {
"EUR": 0.95438,
"GBP": 0.79419
},
"2025-02-17": {
"EUR": 0.95484,
"GBP": 0.79378
},
"2025-02-18": {
"EUR": 0.95721,
"GBP": 0.79473
},
"2025-02-19": {
"EUR": 0.95841,
"GBP": 0.79392
},
"2025-02-20": {
"EUR": 0.95758,
"GBP": 0.7931
},
"2025-02-21": {
"EUR": 0.95557,
"GBP": 0.79083
},
"2025-02-24": {
"EUR": 0.95547,
"GBP": 0.79142
},
"2025-02-25": {
"EUR": 0.95265,
"GBP": 0.78983
},
"2025-02-26": {
"EUR": 0.95356,
"GBP": 0.7902
},
"2025-02-27": {
"EUR": 0.95447,
"GBP": 0.78909
},
"2025-02-28": {
"EUR": 0.96052,
"GBP": 0.79347
},
"2025-03-03": {
"EUR": 0.95557,
"GBP": 0.78863
},
"2025-03-04": {
"EUR": 0.94724,
"GBP": 0.7842
},
"2025-03-05": {
"EUR": 0.9351,
"GBP": 0.78081
},
"2025-03-06": {
"EUR": 0.92627,
"GBP": 0.77612
},
"2025-03-07": {
"EUR": 0.92106,
"GBP": 0.7745
},
"2025-03-10": {
"EUR": 0.92208,
"GBP": 0.77316
},
"2025-03-11": {
"EUR": 0.91642,
"GBP": 0.77322
},
"2025-03-12": {
"EUR": 0.91861,
"GBP": 0.77235
},
"2025-03-13": {
"EUR": 0.92336,
"GBP": 0.77357
},
"2025-03-14": {
"EUR": 0.91836,
"GBP": 0.7731
},
"2025-03-17": {
"EUR": 0.91718,
"GBP": 0.77067
},
"2025-03-18": {
"EUR": 0.91592,
"GBP": 0.77096
},
"2025-03-19": {
"EUR": 0.91768,
"GBP": 0.77157
},
"2025-03-20": {
"EUR": 0.92311,
"GBP": 0.77255
},
"2025-03-21": {
"EUR": 0.92362,
"GBP": 0.77367
},
"2025-03-24": {
"EUR": 0.92387,
"GBP": 0.77294
},
"2025-03-25": {
"EUR": 0.92379,
"GBP": 0.77196
},
"2025-03-26": {
"EUR": 0.92696,
"GBP": 0.77515
},
"2025-03-27": {
"EUR": 0.92721,
"GBP": 0.77254
},
"2025-03-28": {
"EUR": 0.92618,
"GBP": 0.77205
},
"2025-03-31": {
"EUR": 0.92464,
"GBP": 0.77241
}
},
"observations": 64
},
"items": [
{
"max": 0.98058,
"min": 0.91592,
"last": 0.92464,
"mean": 0.950857,
"count": 64,
"first": 0.96256,
"change": -0.03792,
"currency": "EUR",
"pctChange": -3.9395
},
{
"max": 0.82526,
"min": 0.77067,
"last": 0.77241,
"mean": 0.794551,
"count": 64,
"first": 0.79813,
"change": -0.02572,
"currency": "GBP",
"pctChange": -3.2225
}
],
"total": 2,
"source": {
"url": "https://frankfurter.dev/",
"license": "ECB reference rates — free for public use with attribution.",
"provider": "Frankfurter — daily reference rates from the European Central Bank"
}
},
"meta": {
"cost": {
"usd": 0.00144,
"tier": 0
},
"caller": "x402",
"version": null,
"endpoint": "fx.timeseries",
"settlement": {
"txHash": "0x09c2f622ee250986e3bc7c8b1345c2d9481feb2a1d8d0f000eb3c2316eab6548",
"network": "eip155:8453",
"success": true
}
}
}Tags
x402
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