{"slug":"4yearcycle-com-x402-fx-rates-fbee9e","title":"Official daily foreign exchange reference rates from the European Central Bank (","host":"4yearcycle.com","method":"GET","resource":"https://4yearcycle.com/x402/fx-rates","category":"market","description":"Official daily foreign exchange reference rates from the European Central Bank (~30 currencies vs EUR, published each business day around 16:00 CET), rebased on request to any listed currency via EUR cross-rates and filtered to a requested symbol list; returns the reference date, the rate table and ","price_listed":0.005,"price_asked":0.005,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":951,"reported_calls_30d":2,"reported_payers_30d":2,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"base":"USD","symbols":"EUR,GBP,JPY,CHF"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"additionalProperties":false,"properties":{"base":{"default":"EUR","description":"Base currency as ISO 4217 code (case-insensitive). EUR or any of the ~30 ECB-listed currencies (USD, GBP, JPY, CHF, ...); non-EUR bases are computed as cross-rates via EUR. Default: EUR.","examples":["EUR","USD","GBP"],"pattern":"^[A-Za-z]{3}$","type":"string"},"symbols":{"description":"Optional comma-separated ISO 4217 codes to restrict the rate table to (case-insensitive); codes the ECB does not list are ignored. Empty = all listed currencies.","examples":["USD,GBP,JPY","CHF"],"type":"string"}},"required":[],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"base":{"description":"Base currency of the rate table (ISO 4217)","type":"string"},"date":{"description":"ECB reference date of the rates (YYYY-MM-DD, last business day)","type":"string"},"notice":{"description":"ECB attribution notice: the underlying data is available free of charge from the ECB; cross-rates are computed values","type":"string"},"rates":{"additionalProperties":{"type":"number"},"description":"Units of each quoted currency per 1 unit of base, e.g. rates.USD = USD per base. ECB publishes vs EUR; other bases are cross-rates via EUR rounded to 6 decimals.","type":"object"},"source":{"description":"Always \"ECB\" — European Central Bank euro foreign exchange reference rates","type":"string"}},"required":["base","date","rates","source","notice"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.005,"price_match":true,"latency_ms":951,"error":null}],"description_full":"Official daily foreign exchange reference rates from the European Central Bank (~30 currencies vs EUR, published each business day around 16:00 CET), rebased on request to any listed currency via EUR cross-rates and filtered to a requested symbol list; returns the reference date, the rate table and the ECB source attribution.","last_updated":"2026-09-17T03:46:39.842Z","schemes":["exact"]}