{"uid":"cap_OW4ch-oPU66BOcCsxjYiP","slug":"ecb-historical-fx-rate-snapshot-by-date-73c5e0fd","name":"ECB Historical FX Rate Snapshot by Date","description":"Full rate snapshot on a historical fixing date back to 1999 — month-end revaluation staple; weekend dates substitute the prior fixing, flagged","url":"https://x402.professorsausages.com/fx-rates/on/:date","method":"GET","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_07NrgPpjVl5F4CBkxCKwX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the full European Central Bank reference rate snapshot for a specified historical date back to 1999, with weekend/holiday date substitution flagged","exampleAgentPrompt":"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.","exampleUseCases":null,"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:56:12.908Z","isFirstParty":false}