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ECB Historical FX Rate Snapshot by Date
x402
ECB Historical FX Rate Snapshot by Date is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Returns the full European Central Bank reference rate snapshot for a specified historical date back to 1999, with weekend/holiday date substitution flagged
Price / call$0.003
Success—
StatusUnknown
How this service works
Full rate snapshot on a historical fixing date back to 1999 — month-end revaluation staple; weekend dates substitute the prior fixing, flagged
Output
Returns the full ECB daily reference rate object for the resolved fixing date, including: the base currency (EUR), a rates object with all covered currency pairs, the actual ECB fixing date used (which may differ from the requested date if it was a weekend or holiday), the number of weekdays since that fixing (staleDays=0 means current), the requested date, a rateType enum ('ecb-daily-reference'), source attribution ('European Central Bank'), and a disclaimer string.
Example use cases
Example prompt
“Pull the full ECB reference rate snapshot for March 31, 2023 — I need all the currency rates from that fixing date for month-end revaluation, and if it fell on a weekend please flag that and give me the prior fixing.”
Technical details
Endpoint
GEThttps://x402.professorsausages.com/fx-rates/on/:dateWhen to prefer
Use this endpoint when you need the complete ECB reference rate snapshot for a specific historical date — especially for month-end accounting revaluation, financial audits, or any workflow requiring all currency pairs at once rather than a single cross-rate. It automatically handles weekend and holiday date substitution with flagging, making it reliable for any calendar date since 1999. Prefer this over the per-pair series endpoint when you need a full multi-currency snapshot on one date rather than a time series for a specific pair.
Side effects
- Date before 1999 ECB history — endpoint may return error or no data
- Invalid date format — request rejected
- Future date requested — no ECB fixing available yet
- Network or payment failure — 402 payment required error if USDC not provided
Tags
x402
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