{"uid":"cap_b9AB9uvM9Ku-UhhsipD87","slug":"ecb-foreign-exchange-rate-api-frankfurter-6e12d889","name":"ECB Foreign Exchange Rate API (Frankfurter)","description":"Foreign exchange rate API: official ECB reference rate for any fiat currency pair (USD/EUR, GBP/JPY — ~30 major ISO 4217 currencies) via the open-source Frankfurter API. Published once per business day around 16:00 CET — a daily reference rate for settlement and normalization, not a live trading feed. Use for currency conversion, pricing normalization, and financial reporting by agents. Cached up to 1 hour.","url":"https://gateway.stride20k.com/fx/:base/:quote","method":"GET","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_5DWjrq78r7iPhNDNFMTxq","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the official ECB daily reference exchange rate for any supported fiat currency pair, sourced from the Frankfurter API.","exampleAgentPrompt":"What's the official ECB reference rate for USD to EUR today? I need it to normalize our revenue figures for financial reporting.","exampleUseCases":null,"resultDescription":"Returns a JSON object containing the exchange rate (units of quote currency per 1 unit of base currency), the ECB publication date (YYYY-MM-DD), both currency codes, and metadata indicating whether the response was cached, the upstream source (frankfurter/ECB), and the fetch timestamp.","failureModes":["Unsupported currency code (e.g. exotic or non-ECB currency) returns an error — only ~30 major ISO 4217 currencies are supported","Weekend or holiday request may return the most recent prior business day's rate since ECB publishes once per business day around 16:00 CET","Malformed 3-letter currency code (e.g. wrong length or non-alpha characters) rejected by path parameter validation","Rate not yet published for current day if requested before ~16:00 CET — previous business day's rate returned","Upstream Frankfurter API or ECB outage may cause upstream fetch failure"],"whenToPreferThis":"Choose this endpoint when you need an authoritative, official daily reference rate suitable for financial reporting, settlement, accounting normalization, or pricing standardization across ~30 major currencies. Prefer this over scraped or broker rates when regulatory or audit-grade provenance matters. Not suitable for live trading, real-time arbitrage, or intraday rate tracking since rates update only once per business day.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:39:52.578Z","isFirstParty":false}