{"uid":"cap_vjcDLiGjjHeOLpJlM83HB","slug":"offercheck-fx-currency-converter-8795543e","name":"offercheck FX Currency Converter","description":"Convert between 30 major currencies (USD, EUR, GBP, JPY, CHF, CNY, INR, ILS, AUD, CAD, ...) using the European Central Bank's daily reference rates: rate and converted amount for one or many target currencies, optional historical date back to 1999. Returns the ECB rate date and source. $0.002 per call.","url":"https://offercheck.offercheck.workers.dev/v1/fx?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"to":{"type":"string","default":"EUR","description":"Target currency or comma-separated list (default EUR); any of the 30 ECB currencies"},"date":{"type":"string","description":"Optional historical date YYYY-MM-DD (ECB business days from 1999-01-04); omit for the latest rates"},"from":{"type":"string","default":"USD","description":"Base currency, ISO 4217 code (default USD)"},"amount":{"type":"string","default":"1","pattern":"^[0-9]+(\\.[0-9]+)?$","description":"Amount in the base currency to convert, as a decimal number string, e.g. \"100\" (default 1). Query parameters are strings, so the Coinbase Bazaar validator rejects a numeric type here."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ms":95,"date":"2026-09-25","from":"USD","rates":{"EUR":{"rate":0.87696,"converted":87.696},"GBP":{"rate":0.75458,"converted":75.458}},"amount":100,"source":"European Central Bank euro foreign exchange reference rates (published once per business day ~16:00 CET) via frankfurter.dev; non-EUR pairs are cross rates through EUR","warnings":[],"fetched_at":"2026-09-25T20:00:00.000Z"}},"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_QpGXx0LeZ-XKnhGaMMqhN","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":"Converts currency amounts using ECB reference rates, supporting historical dates and multiple target currencies in one call","exampleAgentPrompt":"What's the current ECB exchange rate for 250 USD to EUR and GBP? I need the official reference rate, not a broker rate.","exampleUseCases":[{"title":"Travel budget conversion in EUR","prompt":"I'm planning a trip to Europe and have $3000 to spend — how much is that in euros and Swiss francs using today's ECB reference rates?"},{"title":"Historical rate lookup for accounting","prompt":"What was the official ECB exchange rate from USD to JPY on March 15 2024? I need it for an invoice reconciliation."},{"title":"Multi-currency price comparison","prompt":"Convert 500 GBP into USD, EUR, and CAD using the latest ECB rates so I can compare prices across markets."}],"resultDescription":"A JSON object containing the conversion date, base currency, amount, and a rates map where each target currency key holds both the raw exchange rate and the converted amount. Also includes the data source attribution (ECB via frankfurter.dev), a fetched_at timestamp, any warnings, and response latency in milliseconds.","failureModes":["Unsupported currency code returns an error — only the 30 ECB-published currencies are available","Requested historical date falls on a non-ECB business day (weekends, holidays) — nearest available date may be returned or an error issued","Date before 1999-01-04 (ECB history start) is out of range","Malformed date format (not YYYY-MM-DD) causes a validation error","Non-EUR cross-rate pairs are computed through EUR, so rounding may slightly differ from direct market rates"],"whenToPreferThis":"Choose this endpoint when you need official ECB reference rates rather than live market/broker rates — ideal for accounting, compliance, invoicing, or any use case requiring an authoritative published rate. It supports historical lookups back to 1999 and multi-currency batch conversion in a single call, making it more efficient than looping individual conversions. Prefer alternatives if you need real-time tick-level FX rates or currencies outside the ECB's 30-currency basket.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T06:41:43.368Z","isFirstParty":false,"canonicalSlug":"offercheck-fx-currency-converter-8795543e"}