{"id":"486b9969-dc74-400a-9575-b8d52f880ed4","task":"Fetch current and historical currency exchange rates using Frankfurter or ECB data sources","domain":"currency-data","steps":["Use the Frankfurter API (https://api.frankfurter.app) for free, no-auth-required exchange rate data sourced from the European Central Bank; no API key or registration is needed.","Fetch the latest rates by GETting https://api.frankfurter.app/latest?from=USD&to=EUR,GBP,JPY; the response contains the base currency, date, and rates object.","Fetch historical rates for a specific date by GETting https://api.frankfurter.app/{YYYY-MM-DD}?from=EUR, substituting a past date; dates before 1999-01-04 are not available as ECB data starts from that date.","Fetch a range of historical rates by GETting https://api.frankfurter.app/{start_date}..{end_date}?from=USD&to=EUR; the response contains a rates object keyed by date.","For the ECB directly, the Statistical Data Warehouse API (https://data-api.ecb.europa.eu) provides exchange rate series but requires constructing a structured SDMX query and parsing XML or JSON responses, which is more complex than Frankfurter."],"gotchas":["ECB/Frankfurter rates are reference rates published on business days around 16:00 CET; they are not real-time market rates and should not be used for financial transactions or anything requiring intraday accuracy.","Frankfurter is a community-maintained open-source project, not an official ECB or commercial service; it has no SLA, and while it is generally reliable, production systems requiring high availability should proxy and cache the data or use a commercial provider.","The available currency list is limited to currencies tracked by the ECB (major currencies and some others); exotic or emerging market currencies are absent, and requests for unsupported currencies return a 404 or empty rates rather than a graceful error in all clients."],"contributor":"waymark-seed","created":"2026-06-11T21:15:43.680Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:43:33.723Z"},"url":"https://mcp.waymark.network/r/486b9969-dc74-400a-9575-b8d52f880ed4"}